This study entails the biostratigraphy of benthic agglutinating foraminifera of four wells in the deep water of the Niger Delta. A total of 453 ditch cuttings were analysed for wells A, B, C and D. Eighty-five and 164 ditch cuttings from the intervals of 4900–9920 ft. and 4530–14600 ft. of wells A and well B respectively, while 92 and 112 cuttings from 5760–11400 ft. and 6000–12750 ft. were analysed in wells C and D respectively. These samples were processed and analysed at 60 feet intervals. .
The analysed sections of the wells are composed of shale, mudstones and sand deposited in the upper to lower bathyal environments. The agglutinating foraminifera recovered were fairly well preserved. Total foraminifera percentages recovered from wells A, B, C and D wells are 31%, 34%, 24% and 27% respectively. Marker species were identified and used to erect biozones. The following six agglutinated foraminiferal zones beginning from the oldest have been proposed, Eggerella scrabra Taxon Range Zone, and Ammobaculites strathearnensis–Eggerella scabra, Haplophragmoides narivaensis - Eggerella scabra, Cyclammina cancellata–Ammobaculites strathearnensis, Cyclammina complanata–Glomospira gordiales, Cyclammina cf. minima–Ammobaculites strathearnensis Interval Range Zones. The agglutinated foraminifera assemblages were calibrated to the geologic timeframe by means of planktic foraminifera and calcareous nannofossils. The studied wells penetrated a sedimentary succession of Late Miocene to Early Pliocene age. Taxonomic notes on some of the observed species have also been provided.
Textural Characteristics and Post Depositional Effects on the Reservoir Rock:...Premier Publishers
Textural parameters in terms of grain size and sorting play a vital role in determining the sandstone reservoir characters such as porosity and permeability. Core samples of two wells were described lithologically in terms of grain size, sorting, colour, structures and bioturbation. A total of 101 samples were plugged for porosity and permeability measurement under steady state flow. Textural properties exhibited by the lithofacies are resultants of energy of deposition which yielded various lithofacies associations which are dominantly tidal channel, tidal flat, deltaic shale, lower shoreface and marine shale. Reservoir genetic unit is an upgrade of lithofacies association whereby the reservoir genetic units are map able over distance and across wells based on peculiar characteristics. Therefore, the core GX1 is mainly tidal channel and tidal flats while core GX2 is mainly lower shoreface to foreshore. Reservoir quality shows that the tidal reservoir genetic units possess moderately high porosity and excellent permeability values compared to lower shoreface reservoir genetic units of higher porosity values and relatively lower permeability values. These differences are as a result of textural properties. Structures and bioturbation which tend to increase or decrease the pore throat size. The effect is visible in the high permeability of the channel deposits. Fine grain size and good sorting are responsible for high porosity in lower shoreface deposits.
Textural Characteristics and Post Depositional Effects on the Reservoir Rock:...Premier Publishers
Textural parameters in terms of grain size and sorting play a vital role in determining the sandstone reservoir characters such as porosity and permeability. Core samples of two wells were described lithologically in terms of grain size, sorting, colour, structures and bioturbation. A total of 101 samples were plugged for porosity and permeability measurement under steady state flow. Textural properties exhibited by the lithofacies are resultants of energy of deposition which yielded various lithofacies associations which are dominantly tidal channel, tidal flat, deltaic shale, lower shoreface and marine shale. Reservoir genetic unit is an upgrade of lithofacies association whereby the reservoir genetic units are map able over distance and across wells based on peculiar characteristics. Therefore, the core GX1 is mainly tidal channel and tidal flats while core GX2 is mainly lower shoreface to foreshore. Reservoir quality shows that the tidal reservoir genetic units possess moderately high porosity and excellent permeability values compared to lower shoreface reservoir genetic units of higher porosity values and relatively lower permeability values. These differences are as a result of textural properties. Structures and bioturbation which tend to increase or decrease the pore throat size. The effect is visible in the high permeability of the channel deposits. Fine grain size and good sorting are responsible for high porosity in lower shoreface deposits.
Reservoir types and Reservoir characterizations; Styles of Geologic Reservoir Heterogeneity; Classification of Heterogeneity; Scales of Geologic Reservoir Heterogeneity; Factors Causing Reservoir Heterogeneity; Assessing Reservoir Heterogeneity; Diagenetic and Reservoir Quality and Heterogeneity Implications in Deltaic and Marine Sandstones ; Scales of Fluvial Reservoir Heterogeneity; Impact of Bioturbation on Reservoir Heterogeneity; Carbonate Reservoir Heterogeneity
Analysis of Microstructural Properties of Pliocene Aquifer in the Benin Forma...IOSR Journals
Aquifer microstructural properties were determined using grain size distribution data obtained from
core samples collected during a drilled water borehole. The core samples were collected at depths between 50-
152ft (21.5-65.4 m), corresponding to the aquifer repositories. Samples were oven dried at 800 C for 2hrs. Part
of the samples was used to obtain porosity for aquifer material, while the other part was analyzed mechanically
for particulate size distributions. The effective particulate size distributions at d10, d20 and d60 were obtained and
used to compute the aquifer uniformity coefficient (Cu).The effective particulate size distributions complemented
by eight empirical formulae were deployed to determine hydraulic conductivity of the aquifer. The ratio of the
horizontal hydraulic conductivity to vertical hydraulic conductivity yielded anisotropy values for the aquifer.
Results show that fractional porosity values ranged from 0.282 to 0.492; uniformity coefficient was between 2.5
and 12; horizontal hydraulic conductivity ranged between 0.343 and 2.511 m/day while the vertical hydraulic
conductivity values obtained ranged from 1.320 to 2.907 day/m. Anisotropy values (Av) determined for the
aquifer ranged between 0.118 and 1.005. These results suggest that the aquifer is of gravelly sand within the
deltaic deposit with no clay intercalation and has good potential for groundwater resources.
In this presentation you will get to know about aspects of paleobotany, about coal and petroleum exploration and its extraction and how paleobotany is related to coal and petroleum.
Re-Colonizing Soft Corals on the Degraded Coral Reefs of Gulf Of Kachchh Mari...paperpublications3
Abstract: Coral reefs of the Gulf of Kachchh are in a highly degraded condition, when compared with other three major coral reef regions of India. In correlation with geographical and oceanographical changes, its arid climate and the semi-diurnal tidal amplitudes fluctuations hamper the recovery of the reef. Soft corals may play the alternative key role in maintaining the ecological role in the degraded reef ecosystem in the absence of hard corals. Re-colonization of soft corals on the degraded reefs is among the first steps to make them to recover gradually. Present Line Intercept Transect survey (LIT) conducted in a reef of the Gulf inferred the possibility to recovery of the reefs due to the colonization of soft corals on the bare coral boulders.
Reservoir types and Reservoir characterizations; Styles of Geologic Reservoir Heterogeneity; Classification of Heterogeneity; Scales of Geologic Reservoir Heterogeneity; Factors Causing Reservoir Heterogeneity; Assessing Reservoir Heterogeneity; Diagenetic and Reservoir Quality and Heterogeneity Implications in Deltaic and Marine Sandstones ; Scales of Fluvial Reservoir Heterogeneity; Impact of Bioturbation on Reservoir Heterogeneity; Carbonate Reservoir Heterogeneity
Analysis of Microstructural Properties of Pliocene Aquifer in the Benin Forma...IOSR Journals
Aquifer microstructural properties were determined using grain size distribution data obtained from
core samples collected during a drilled water borehole. The core samples were collected at depths between 50-
152ft (21.5-65.4 m), corresponding to the aquifer repositories. Samples were oven dried at 800 C for 2hrs. Part
of the samples was used to obtain porosity for aquifer material, while the other part was analyzed mechanically
for particulate size distributions. The effective particulate size distributions at d10, d20 and d60 were obtained and
used to compute the aquifer uniformity coefficient (Cu).The effective particulate size distributions complemented
by eight empirical formulae were deployed to determine hydraulic conductivity of the aquifer. The ratio of the
horizontal hydraulic conductivity to vertical hydraulic conductivity yielded anisotropy values for the aquifer.
Results show that fractional porosity values ranged from 0.282 to 0.492; uniformity coefficient was between 2.5
and 12; horizontal hydraulic conductivity ranged between 0.343 and 2.511 m/day while the vertical hydraulic
conductivity values obtained ranged from 1.320 to 2.907 day/m. Anisotropy values (Av) determined for the
aquifer ranged between 0.118 and 1.005. These results suggest that the aquifer is of gravelly sand within the
deltaic deposit with no clay intercalation and has good potential for groundwater resources.
In this presentation you will get to know about aspects of paleobotany, about coal and petroleum exploration and its extraction and how paleobotany is related to coal and petroleum.
Re-Colonizing Soft Corals on the Degraded Coral Reefs of Gulf Of Kachchh Mari...paperpublications3
Abstract: Coral reefs of the Gulf of Kachchh are in a highly degraded condition, when compared with other three major coral reef regions of India. In correlation with geographical and oceanographical changes, its arid climate and the semi-diurnal tidal amplitudes fluctuations hamper the recovery of the reef. Soft corals may play the alternative key role in maintaining the ecological role in the degraded reef ecosystem in the absence of hard corals. Re-colonization of soft corals on the degraded reefs is among the first steps to make them to recover gradually. Present Line Intercept Transect survey (LIT) conducted in a reef of the Gulf inferred the possibility to recovery of the reefs due to the colonization of soft corals on the bare coral boulders.
InterTech is a Moscow based construction and development companyMaxim Gavrik
InterTech is a Moscow based construction and development company, which provides a full range of services for design, construction, installation, commissioning and start-up of the MEP systems in the buildings and structures under industrial, commercial and civil construction.
Be The Talk Of The Town - How To Maximize Your Media CoverageJim Norris
Have you shared your music and story with dozens or even hundreds of media outlets and received little to no response or publicity? There are probably many reasons for that, and what's more, they likely have little or nothing to do with the quality of the music.
Regardless of whether they work in print, television, radio, or the blogosphere, every music and arts journalist in the country receives dozens of pitches every week - even every day - and pays attention to only a small fraction of them. So what separates the artists that score coverage from those who don't?
Join us for this webinar to find out.
Canadian Musician's Andrew King and Mike Raine will put you into the mindset of a music journalist and explain why and how they decide to cover certain artists.
Topics will include:
- Who to target in the media
- Making a first impression
- Putting together an effective media kit
- Finding & telling your story
- What media wants from you
- Effective follow-up
La logística empresarial, disciplina en la que se agrupan y coordinan actividades como el abastecimiento, el transporte o el control de inventarios, es un elemento vital para el buen funcionamiento de cualquier empresa.
Foraminiferal Approach to Palaeoenvironmental Interpretations: Case Study of ...Premier Publishers
Palaeoenvironmental analysis was carried out on eighty (80) ditch cutting samples of the Late Eocene-Early Oligocene sediments from two wells (well C consist of 13 samples collected at 30metres interval from depth range of 2410 -2770m while well F consists of 67 samples collected at 20metres from depth range of 2000-3320m) in the Northern Depobelt of the Tertiary Niger Delta. This study was carried out using standard micropalaeontological sample procedures and analysis as well as interpretation of the foraminiferal biofacies assemblages taking into consideration the qualitative and quantitative approaches. The qualitative method involved comparison of the recovered foraminifera with extant forms while the quantitative method involved the use of tau index, palaeowater depth (Pwd), percent of calcerous to arenaceous benthic foraminifera ratios (%FOBC: %FOBA), Fisher diversity and foraminifera/ ostracoda ratio. The palaeoenvironmental analysis indicates that the sediments were deposited in a non-marine to outer neritic environmental setting with salinity conditions fluctuating between normal marine and slightly hypersaline.
Ecology and behavior of Telescopium Telescopium (Linnaeus, 1758), (Mollusca: ...inventionjournals
International Journal of Engineering and Science Invention (IJESI) is an international journal intended for professionals and researchers in all fields of computer science and electronics. IJESI publishes research articles and reviews within the whole field Engineering Science and Technology, new teaching methods, assessment, validation and the impact of new technologies and it will continue to provide information on the latest trends and developments in this ever-expanding subject. The publications of papers are selected through double peer reviewed to ensure originality, relevance, and readability. The articles published in our journal can be accessed online.
International Journal of Engineering and Science Invention (IJESI) is an international journal intended for professionals and researchers in all fields of computer science and electronics. IJESI publishes research articles and reviews within the whole field Engineering Science and Technology, new teaching methods, assessment, validation and the impact of new technologies and it will continue to provide information on the latest trends and developments in this ever-expanding subject. The publications of papers are selected through double peer reviewed to ensure originality, relevance, and readability. The articles published in our journal can be accessed online.
Source rock maturation studies using vitrinite reflectance and geothermal dat...Premier Publishers
The source rock maturation levels of six wells in GABO and WABI fields, Niger delta sedimentary basin were evaluated using vitirinite reflectance and geothermal data. The results of the analysis show that the source rocks are mature. Vitrinite reflectance was measured and analyzed in all wells containing greater than 1.0 percent Total organic carbon content (TOC). The thermal alternation index (TAI) values obtained show that temperature was sufficiently good to generate hydrocarbons in the source rock indicating the maturity of the source rock. The GABO and WABI fields have a good range of Vitrinite reflectance values which probably indicate the temperature that were reached in the fields. The average reflectance of Vitrinite in GABO and WABI fields are 0.35 and 0.75, respectively. These values are consistent and suggest that basinal source rocks have begun to generate hydrocarbon.
Aquatic ecosystems are hot spots of most terrestrial biodiversity. They interact with their surrounding terrestrial area through food webs and habitat resources. The aquatic ecosystems also attract a wide range of other fauna including wading and migrating birds, amphibians, riparian mammals and insects. Furthermore, aquatic ecosystems have ability to recycle nutrients of wastewater. Despite many benefits they have, their potentiality in the rehabilitation of quarries is not well recognized. The recent effort on the rehabilitation of quarry site is mostly focused on terrestrial plants despite the fact that quarries life are heterogeneous ecosystems. Owing to this reason, there is a need of using the potential of aquatic ecosystems to enhance the rehabilitation of quarries sites. The present project is therefore focused on establishing the aquatic ecosystem at Wazo hill quarry.
The project won the 1st Prize in National Quarry Life Award in 2014 in Tanzania.
Read more: http://www.quarrylifeaward.com/project/potential-use-aquatic-ecosystems-enhancement-rehabilitation-mining-sites
Promoting oyster aquaculture in Ghana: Strategies for optimising seed collect...Ernest Chuku
A presentation on the procurement of wild seed (spat) of the mangrove oyster, Crassostrea tulipa, in coastal water bodies along the coast of Ghana, West Africa. The slide covers spatial and temporal variations in spatfall in the Densu Delta, Narkwa Lagoon, Benya Lagoon and Whin Estuary from November 2017 to October 2018. A comparison of the effectiveness of locally available spat collectors is also presented. The slide contains information on typical fouling organisms in oyster farming in the tropics. Growth rates of oysters are also compared among the different water bodies and on different collectors.
Ecology and feeding behavior of Sanguinolaria acuminata (Reeve, 1857) (Bival...inventionjournals
International Journal of Engineering and Science Invention (IJESI) is an international journal intended for professionals and researchers in all fields of computer science and electronics. IJESI publishes research articles and reviews within the whole field Engineering Science and Technology, new teaching methods, assessment, validation and the impact of new technologies and it will continue to provide information on the latest trends and developments in this ever-expanding subject. The publications of papers are selected through double peer reviewed to ensure originality, relevance, and readability. The articles published in our journal can be accessed online.
The Nubia Sandstone Nubia Group , Western Desert, Egypt An OverviewYogeshIJTSRD
No information was given about the outcropping of the Nubia sandstone in the Great Sand Sea in the Western Desert of Egypt and actually very scarce and insufficient information has been written on the geology of the Great Sand Sea. Since 1931 the Great Sand Sea has been described as being formed of many parallel longitudinal sand dunes which cover ~72000 km² and are bounded in the south by the Gilf El Kebir Nubia Sandstone Plateau and in the north by Siwa Oasis. However, recently it has been found by the author and his collaborators that the rock units exposed on surface in the Great Sand Sea are belonging to the younger members of the fluviatile Cretaceous Nubia Sandstone Group. They are not covered by younger marine consolidated deposits but only with a thin veneer of accumulations of free sands originating from the disintegration and breakdown of the Nubia Sandstone bedrock, thus obscuring the original bedrock. The area exhibits a long history of predominantly continental sandstone accumulation and continuous subsiding during the geologic history so that the sequence attains a thickness more than 3500m in the subsurface. The exposed Nubia Sandstone rocks have been formed in different geomorphologic features such as longitudinal parallel sandstone ridges separated by wide flat sandstone tracks, sandstone plateaus and domes, sandstone depressions, plains and valleys. These results make it necessary to review the surface distribution and the lithostratigraphic change both stratigraphic and geographic of the Nubia Group in the Western Desert of Egypt. Khaled Abdel-Kader Ouda "The Nubia Sandstone (Nubia Group), Western Desert, Egypt: An Overview" Published in International Journal of Trend in Scientific Research and Development (ijtsrd), ISSN: 2456-6470, Volume-5 | Issue-3 , April 2021, URL: https://www.ijtsrd.com/papers/ijtsrd38760.pdf Paper URL: https://www.ijtsrd.com/other-scientific-research-area/geology/38760/the-nubia-sandstone-nubia-group-western-desert-egypt-an-overview/khaled-abdelkader-ouda
Wading birds have declined across Europe as the intensification of lowland agriculture has caused severe habitat destruction and degradation. Aggregates extraction sites present areas of exposed fine sediments deposited as waste material in silt lagoons which could recreate lost wader habitat. This project explores the value of silt lagoons for wading birds by investigating sediment composition, invertebrate food availability and monitoring bird activity at Wykeham quarry.
This project won the 3rd Prize in the International Quarry Life Award in 2012 and the 1st Prize in National Quarry Life Award in 2012 in the United Kingdom.
Read more: http://www.quarrylifeaward.com/project/restoration-quarry-silt-lagoons-wading-birds
CHAPTER 1 SEMESTER V PREVENTIVE-PEDIATRICS.pdfSachin Sharma
This content provides an overview of preventive pediatrics. It defines preventive pediatrics as preventing disease and promoting children's physical, mental, and social well-being to achieve positive health. It discusses antenatal, postnatal, and social preventive pediatrics. It also covers various child health programs like immunization, breastfeeding, ICDS, and the roles of organizations like WHO, UNICEF, and nurses in preventive pediatrics.
INFECTION OF THE BRAIN -ENCEPHALITIS ( PPT)blessyjannu21
Neurological system includes brain and spinal cord. It plays an important role in functioning of our body. Encephalitis is the inflammation of the brain. Causes include viral infections, infections from insect bites or an autoimmune reaction that affects the brain. It can be life-threatening or cause long-term complications. Treatment varies, but most people require hospitalization so they can receive intensive treatment, including life support.
TEST BANK For Accounting Information Systems, 3rd Edition by Vernon Richardso...rightmanforbloodline
TEST BANK For Accounting Information Systems, 3rd Edition by Vernon Richardson, Verified Chapters 1 - 18, Complete Newest Version
TEST BANK For Accounting Information Systems, 3rd Edition by Vernon Richardson, Verified Chapters 1 - 18, Complete Newest Version
TEST BANK For Accounting Information Systems, 3rd Edition by Vernon Richardson, Verified Chapters 1 - 18, Complete Newest Version
We are one of the top Massage Spa Ajman Our highly skilled, experienced, and certified massage therapists from different corners of the world are committed to serving you with a soothing and relaxing experience. Luxuriate yourself at our spas in Sharjah and Ajman, which are indeed enriched with an ambiance of relaxation and tranquility. We could confidently claim that we are one of the most affordable Spa Ajman and Sharjah as well, where you can book the massage session of your choice for just 99 AED at any time as we are open 24 hours a day, 7 days a week.
Visit : https://massagespaajman.com/
Call : 052 987 1315
Navigating Challenges: Mental Health, Legislation, and the Prison System in B...Guillermo Rivera
This conference will delve into the intricate intersections between mental health, legal frameworks, and the prison system in Bolivia. It aims to provide a comprehensive overview of the current challenges faced by mental health professionals working within the legislative and correctional landscapes. Topics of discussion will include the prevalence and impact of mental health issues among the incarcerated population, the effectiveness of existing mental health policies and legislation, and potential reforms to enhance the mental health support system within prisons.
Under Pressure : Kenneth Kruk's StrategyKenneth Kruk
Kenneth Kruk's story of transforming challenges into opportunities by leading successful medical record transitions and bridging scientific knowledge gaps during COVID-19.
Deep Leg Vein Thrombosis (DVT): Meaning, Causes, Symptoms, Treatment, and Mor...The Lifesciences Magazine
Deep Leg Vein Thrombosis occurs when a blood clot forms in one or more of the deep veins in the legs. These clots can impede blood flow, leading to severe complications.
Letter to MREC - application to conduct studyAzreen Aj
Application to conduct study on research title 'Awareness and knowledge of oral cancer and precancer among dental outpatient in Klinik Pergigian Merlimau, Melaka'
Stem Cell Solutions: Dr. David Greene's Path to Non-Surgical Cardiac CareDr. David Greene Arizona
Explore the groundbreaking work of Dr. David Greene, a pioneer in regenerative medicine, who is revolutionizing the field of cardiology through stem cell therapy in Arizona. This ppt delves into how Dr. Greene's innovative approach is providing non-surgical, effective treatments for heart disease, using the body's own cells to repair heart damage and improve patient outcomes. Learn about the science behind stem cell therapy, its benefits over traditional cardiac surgeries, and the promising future it holds for modern medicine. Join us as we uncover how Dr. Greene's commitment to stem cell research and therapy is setting new standards in healthcare and offering new hope to cardiac patients.
Cold Sores: Causes, Treatments, and Prevention Strategies | The Lifesciences ...The Lifesciences Magazine
Cold Sores, medically known as herpes labialis, are caused by the herpes simplex virus (HSV). HSV-1 is primarily responsible for cold sores, although HSV-2 can also contribute in some cases.
DECODING THE RISKS - ALCOHOL, TOBACCO & DRUGS.pdfDr Rachana Gujar
Introduction: Substance use education is crucial due to its prevalence and societal impact.
Alcohol Use: Immediate and long-term risks include impaired judgment, health issues, and social consequences.
Tobacco Use: Immediate effects include increased heart rate, while long-term risks encompass cancer and heart disease.
Drug Use: Risks vary depending on the drug type, including health and psychological implications.
Prevention Strategies: Education, healthy coping mechanisms, community support, and policies are vital in preventing substance use.
Harm Reduction Strategies: Safe use practices, medication-assisted treatment, and naloxone availability aim to reduce harm.
Seeking Help for Addiction: Recognizing signs, available treatments, support systems, and resources are essential for recovery.
Personal Stories: Real stories of recovery emphasize hope and resilience.
Interactive Q&A: Engage the audience and encourage discussion.
Conclusion: Recap key points and emphasize the importance of awareness, prevention, and seeking help.
Resources: Provide contact information and links for further support.
2. Citation: Ajayi EO, Agboneni OE (2016) Neogene Deep Water Agglutinated Foraminiferal Biostratigraphy and Biozonation in Niger Delta, Nigeria. J
Earth Sci Clim Change 7: 371. doi: 10.4172/2157-7617.1000371
Page 2 of 8
Volume 7 • Issue 10 • 1000371J Earth Sci Clim Change, an open access journal
ISSN: 2157-7617
benthic foraminifera using the standard micropaleontological sample
preparation procedures.
Samples were first laid out sequentially according to their depths.
Labels were prepared for each sample. Clean sample plates are laid out.
About 25 g of samples were placed (for ditch cutting samples) into
the sample plates. The samples were dried on a hot plate at about 800°C
for 2-3 hours. The sample plates were allowed to cool and weighed.
Samples were soaked in kerosene and left overnight to disintegrate. The
samples were decanted, topped with water and left overnight.
The samples were washed with liquid soap and water through
four sieve mesh sizes of 500, 250, 150 and 63 microns and dried.
Samples were transferred into four different bags/phials and labelled
accordingly. Foraminifera were picked from the packaged samples
and studied with the aid of a reflected light binocular Zeis microscope.
All the agglutinating benthic foraminifera recovered were analysed.
Generic and species identification were based on the proceedings of
the past series of international workshops on agglutinated foraminifera
and other relevant Neogene agglutinated foraminiferal publications.
Results and Discussion
Forty-sixagglutinatingbenthicforaminiferalspecieswereidentified
fromthefourwellsinthisstudy.Theforaminiferalassemblageswerefair
to moderately well-preserved. Six benthic agglutinating foraminiferal
biozones were recognized based on their stratigraphic distribution in
the four studied wells (Figures 3-7).
Biostratigraphy
The identified agglutinating foraminiferal zones are beginning from
the oldest: Eggerella scrabra Taxon Range Zone (TRZ), Ammobaculites
strathearnensis–Eggerella scabra.
Interval Range Zone (IRZ), Haplophragmoides
narivaensis – Eggerella scabra IRZ, Cyclammina cancellata –
Ammobaculites strathearnensis IRZ, Cyclammina complanata –
Glomospira gordiales IRZ, Cyclammina cf. minima – Ammobaculites
strathearnensis IRZ.
The ages of the identified zones were calibrated to the geologic
timeframe by means of planktic foraminifera and calcareous
nannofossils from the studied wells [26]. First downhole occurrences
(FDO) which represent the highest downhole occurrences of
chronostratigraphically significant agglutinating foraminiferal species
were used to define the upper and lower boundaries of the IRZ while
FDO and the lowest downhole occurrence (LDO) of the nominate
taxon defined the upper and lower boundaries of the TRZ. This
zonal characterization is in accordance with the work of Murphy and
Salvador.
Some intervals of the studied wells showed very poor agglutinating
foraminiferal recovery or did not contain nominate or marker species.
Such intervals were known as indeterminate zone (Figures 3-7). Details
of the above biozones are presented below [27-36].
Eggerella scabra Taxon Range Zone (TRZ)
Stratigraphic range: This zone was identified in the four wells.
Well A: 9,250–9,500 ft.
Well B: 9,750–11,300 ft.
Well C: 8,800–10,350 ft.
and D. Eighty-five and 164 ditch cutting samples from interval of
4900–9920 ft. and 4530–14600 ft. of wells A and well B respectively,
while 92 and 112 samples from interval of 5760–11400 ft. and 6000–
12750 ft. were analysed in wells C and D respectively. These samples
were processed and analysed at 60 ft. interval for agglutinating
A – Well A
B – Well B
C – Well C
D – Well D
Figure 1: Simplified geological map of the study area and well locations in the
Niger Delta.
Figure 2: Stratigraphic column showing the three formations of the Niger Delta
(modified after Doust and Omatsola, 1990).
3. Citation: Ajayi EO, Agboneni OE (2016) Neogene Deep Water Agglutinated Foraminiferal Biostratigraphy and Biozonation in Niger Delta, Nigeria. J
Earth Sci Clim Change 7: 371. doi: 10.4172/2157-7617.1000371
Page 3 of 8
Volume 7 • Issue 10 • 1000371J Earth Sci Clim Change, an open access journal
ISSN: 2157-7617
Age: Late Miocene (NN9-NN11 and N16-N17) in the studied wells.
Ammobaculites strathearnensis–Eggerella scabra IRZ.
Stratigraphic range: The zone was identified in three of the studied
wells
Well A: 8050–9250 ft.
Well B: 8450–9750 ft.
Well C: 8550–8800 ft.
Well D: 9,350–11,880 ft.
Definition: The zone is defined by the total taxon range of Eggerella
scabra. The upper and lower boundaries are defined by the FDO and
LDO of the nominate taxon respectively.
Characteristic taxa: Ammodiscus glabratus, Eggerella ex. gr.
forestensis, Hormosina globulifera, Reophax morrisoni, Saccammina
complanata, Glomospira charoides, Ammobaculites agglutinans,
Alveolophragmium subglobosum and A. crassum.
Figure 3: Stratigraphic ranges of agglutinated foraminifera calibrated by planktic foraminifera and calcareous nano-fossils in well A.
Figure 4: Stratigraphic ranges of agglutinated foraminifera calibrated by planktic foraminifera and calcareous nano-fossils in well B.
4. Citation: Ajayi EO, Agboneni OE (2016) Neogene Deep Water Agglutinated Foraminiferal Biostratigraphy and Biozonation in Niger Delta, Nigeria. J
Earth Sci Clim Change 7: 371. doi: 10.4172/2157-7617.1000371
Page 4 of 8
Volume 7 • Issue 10 • 1000371J Earth Sci Clim Change, an open access journal
ISSN: 2157-7617
Definition: The upper and lower boundaries of the zone are defined
by the FDO of A. strathearnensis and E. scabra respectively.
Characteristic taxa: Trochammina globigeriniformis,
Haplophragmoides compressa, H. narivaensis, Glomospira charoides, G.
gordiales, FDO of Crybrostomoides spp, Ammobaculites glabratus, A.
agglutinans, FDO of Trochamminoides spp and FDO of Saccammina
spp.
Age: Late Miocene–Early Pliocene (NN9-NN12 and N16-N17) in
the studied wells.
Cyclammina cancellata–Ammobaculites strathearnensis IRZ
Stratigraphic range: The zone was identified in two of the four
wells.
Well A: 7100–8050 ft.
Well C: 7550–8550 ft.
Definition: The upper and lower boundaries of the zone are
defined by the FDO of C. cancellata and Ammobaculites strathearnensis
respectively.
Figure 5: Stratigraphic ranges of agglutinated foraminifera calibrated by planktic foraminifera and calcareous nano-fossils in well C.
Figure 6: Stratigraphic ranges of agglutinated foraminifera calibrated by planktic foraminifera and calcareous nano-fossils in well D.
5. Citation: Ajayi EO, Agboneni OE (2016) Neogene Deep Water Agglutinated Foraminiferal Biostratigraphy and Biozonation in Niger Delta, Nigeria. J
Earth Sci Clim Change 7: 371. doi: 10.4172/2157-7617.1000371
Page 5 of 8
Volume 7 • Issue 10 • 1000371J Earth Sci Clim Change, an open access journal
ISSN: 2157-7617
Characteristic taxa: Saccammina complanata, Glomospira
charoides, Haplophragmoides compressa, Ammobaculites glabratus,
Cyclammina cf. minima, Ammobaculites spp, Trochammina spp,
Textularia spp, Eggerella sp and Bathysiphon spp.
Age: Late Miocene (NN10-NN11 and N16-N17) in the studied
wells.
Haplophragmoides narivaensis–Eggerella scabra IRZ
Stratigraphic range: The zone was identified in only one well.
Well D: 8650-9350 ft.
Definition: The upper and lower boundaries of the zone are defined
by the FDO of H. narivaensis and FDO of E. scabra respectively.
Characteristic taxa: Karreriella siphonella, Glomospira gordiales,
G. charoides, Gravellina narivaensis, Saccammina complanata,
Trochammina proteus, T. globigeriniformis, Ammobaculites
strathearnensis, FDO of Recurvoides contortus, FDO of
Alvelophragmium subglobosum, A, crassum and Bathysiphon spp.
Age: Late Miocene (NN11 and N17) in the studied wells.
Saccammina complanata–Glomospira gordiales IRZ
Stratigraphic range: The zone was recognized in only one well.
Well D: 6750–7500 ft.
Definition: The upper and lower boundaries of the zone are defined
by the FDO of S. complanata and G. gordiales respectively.
Characteristic taxa: Valvulina flexilis, Trochammina spp, FDO
of Textularia spp, Glomospira charoides and Bathysiphon spp were
recorded in the zone.
Age: Early Pliocene (NN12-NN13 and NN18) in Well D.
Cyclammina cf. minima–Ammobaculites strathearnensis IRZ
Stratigraphic range: The zone was identified in only one well.
Well B: 7350–8450 ft.
Definition: The upper and lower boundaries are defined by the
FDO of A. strathearnensis and Cyclammina cf. minima respectively.
Characteristic taxa: Saccammina complanata, Glomospira
charoides, G. gordiales, Cribrostomoides spp, Clavulina spp and the
FDO of Trochammina spp.
Age: Early Pliocene (NN12 and N17) in Well B.
Systematics
Only the most frequent taxa of the deep water agglutinated
foraminifera (DWAF) are referred to below. Some of them represent the
zonal nominate taxa of the biozones from this study. The classification
employed here follows that of Loeblich and Tappan (1963, 1987),
initial reports of the Deep Sea Drilling Project and Ocean Drilling
Figure 7: Stratigraphic correlation of the agglutinated foraminiferal biozones in the studied wells.
6. Citation: Ajayi EO, Agboneni OE (2016) Neogene Deep Water Agglutinated Foraminiferal Biostratigraphy and Biozonation in Niger Delta, Nigeria. J
Earth Sci Clim Change 7: 371. doi: 10.4172/2157-7617.1000371
Page 6 of 8
Volume 7 • Issue 10 • 1000371J Earth Sci Clim Change, an open access journal
ISSN: 2157-7617
Programme, the various proceedings of the international workshops
on agglutinated foraminifera since 1981 and other relevant journal
papers.. No detail morphological descriptions are provided since they
have been published in some of the above mentioned publications.
Sub-order : (Textulariina Delage and Herouard, 1896).
Super-family : (Haplophragmoidinae Maync, 1925).
Genus : (Haplophragmoides Cushman, 1910).
Haplogramiodes narivaensis, [Cushman and LeRoy, 1938 Plate
I (Slides 6 and 7)]
Description: Test small planispiral and involute, composed of two
volutions, the last of which is five to seven chambered. Umbilicus very
deep and small, chambers tend to become elongate in axial direction
and increase rapidly in size so that the end chamber is twice the size of
the first chamber of the last volutions, aperture is interiomarginal, walls
finely to coarsely arenaceous, surface smoothly finished.
Size: 0.20 mm – 0.27 mm
Remarks: Few well preserved individuals were recovered in all
four wells.
Age : Late Miocene–Early Pliocene.
Genus: (Ammobaculites Cushman, 1910).
Ammobaculites strathearnensis, [(Cushman and LeRoy, 1938)
Plate I (Slide 5)].
Description: Test free, elongate, ovate to round in section,
compressed with seven rapidly enlarging chambers in the last whorl;
the last chamber only slightly uncoiled, sutures are flush and zall
coarsely agglutinated, aperture terminal.
Remarks: Common occurrence in wells A, B, C and D. Recovered
specimens are well preserved.
Age: Late Miocene–Early Pliocene.
Family: (Textularidae Ehrenberg. 1838).
Subfamily: (Textulariinae Ehrenberg, 1838).
Genus: (Textularia Defrance in de Blainville, 1824).
Textularia pavula [(Carpenter, 1869)] Plate I (Slide 12)].
Description: Test free, elongate, biserial, generally more or
less compressed in plane of biseriality or rarely oval to circular in
cross section; chambers numerous, generally closely appressed, wall
agglutinated, simple; aperture single low arch at base of last chamber.
Age: Late Miocene.
Family: Ataxophragmedae Schwager, 1877
Sub-family: Valvulininae Berthelin, 1826
Genus: Valvulina d’Orbigny, 1826
Valvulina flexilis [(Cushman and Renz, 1941) Plate I (Slide 4)].
Description: Moderately flaring triserial test with a strongly
lobulate periphery, chambers expand fairly rapidly distorted pushed
towards proloculus, thereby forming overlapping lobes, may be
triangular in section, aperture wide and high on an excavated apertural
face, wall fairly smooth, with angular quartz grains of uniform size set
in an abundant matrix.
Remarks: Rare but well preserved individuals found in all four
wells.
Age: Late Miocene.
Genus: (Karreriella Carpenter, 1869).
Karreriella siphonella [(Cushman, 1933) Plate I (Slide 3)].
Description: Three chambers in early whorls, later increasing
in number or becoming uniserial aperture with valvular tooth,
interiomarginal at least in early stage, may become terminal and
modified to multiple aperture, test free, elongate, early chambers
4 5 6
7 8 9
10 11 12
13 14 15
1 2 3
Plate 1: Photomicrographs of marker agglutinated benthic foraminiferal
species (Slides 1-15).
7. Citation: Ajayi EO, Agboneni OE (2016) Neogene Deep Water Agglutinated Foraminiferal Biostratigraphy and Biozonation in Niger Delta, Nigeria. J
Earth Sci Clim Change 7: 371. doi: 10.4172/2157-7617.1000371
Page 7 of 8
Volume 7 • Issue 10 • 1000371J Earth Sci Clim Change, an open access journal
ISSN: 2157-7617
in trochoidspire of one or more whorls followed by well-developed
biserial stage which may be slightly twisted about its axis, wall finely
agglutinated, smoothly finished, aperture rounded, interminal face of
final chambers, bordered by lip or produced on distinct slender neck.
Age: Late Miocene–Early Pliocene.
Super-family: (Ammodiscacea Reuss, 1862).
Family: (Ammodiscidae Reuss, 1862).
Sub-family: (Saccammininae Brady, 1884).
Family: (Saccamminidae Brady, 1884).
Genus: (Saccammina Carpenter, 1869).
Saccammina complanata [(Franke) Plate I (Slide 11)]
Description: Test free, single globular chamber, wall with pseudo-
chitinous base, and outer agglutinated layer, firmly cemented, aperture
rounded may be produced on short neck.
Age: Late Miocene
Family: (Ammodiscidae Reuss, 1862).
Sub-family: (Ammodiscinae Reus, 1862).
Genus: (Ammodiscus Reuss, 1862).
Ammodiscus glabratus [(Cushman and Jarvis, 1928) Plate I
(Slide 15)].
Description: Test free, planispiral, or irregularly coiled. discoidal,
proloculus followed by undivided planispirally enrolled tubular
chamber which may show transverse growth, constrictions, but no
internal partitions, wall agglutinated; aperture at open end of tubular
chamber.
Age: Late Miocene- Early Miocene
Family: (Lituolidae de Blainville, 1827).
Sub family: (Cyclammininae Marie, 1941).
Genus: (Cyclammina Brady, 1879).
Cyclammina cancellata [(Brady, 1879) Plate I (Slide 14)]
Description: Planispirally coiled, involute coiling, round to
somewhat lobate in outline, wall with reticulate, near surface meshwork
beneath imperforate epidermal coating and commonly with labyrinthic
interior; aperture single or multiple. The species has larger number of
chambers (10 to 16) in the final whorl which distinguishes it from other
members of the genus.
Age: Late Miocene - Early Pliocene
Cyclammina minima [(LeRoy, 1939) Plate I (Slide 13)]
Description: Test small, circular in transverse section, compressed,
slightly umbilicate, periphery sharply rounded, chambers distinct, nine
to ten in last whorl; sutures distinct, somewhat limbate, occasionally
showing interior labyrinthic structure; aperture near base of last
chamber on periphery, This species is recognized by the limbate
character of the test and the distinct, limbate, radial sutures.
Age: Late Miocene- Early Pliocene.
Eggerella brady [(Cushman, 1933) Plate I (Slide 8)]
Description: Test free, conical or ovoid, triserial, with inflated and
embracing chambers; wall agglutinated of calcareous particles with
considerable cement, interior simple, aperture narrow, hook-shaped,
interio-marginal and extending short distance up face.
Age: Late- Miocene.
Glomospira charoides [(Jones and Parker, 1860) Plate I (Slides
1 and 2)]
Description: Test free, consisting of spherical proloculus and
undivided tubular, second chamber coiled in high spire around vertical
axis nearly perpendicular to original axis; wall agglutinated; aperture at
open end of tube.
Age: Late Miocene- Early Pliocene.
Correlation of Agglutinated Foraminiferal Biozones
The Eggerella scabra TRZ was found to be common to all
the four wells while the Ammobaculites strathearnensis – Eggerella
scabra IRZ was identified in three of the wells. Cyclammina cancellata
- Ammobaculites strathearnensis IRZ has representation in two
of the wells. The Saccammina complanata – Glomospira gordiales
and Haplophragmoides narivaensis – Eggerella scabra IRZ have
restrictions to well D while Cyclammina cf. minima – Ammobaculites
strathearnensis IRZ was only identified in well B. The agglutinating
foraminiferal biozones show good correlation in the four studied A, B,
C, D wells (Figure 7).
Agglutinated benthic foraminifera
1. Glomospira charoides (Jones and Parker, 1860; Apertural view).
2. Glomospira charoides (Jones and Parker, 1860; Ventral view).
3. Karreriella siphonella (Cushman 1933; Side view).
4. Valvulina flexilis (Cushman and Renz, 1941; Dorsal view).
5. Ammobaculites strathearnensis (Cushman and LeRoy, 1938;
Dorsal view).
6. Haplophragmoides narivaensis, (Cushman and LeRoy, 1938;
Ventral view).
7. Haplophragmoides narivaensis, (Cushman and LeRoy, 1938;
Dorsal view).
8. Eggerella bradyl (Cushman 1933; Ventral view).
9. Textularia spp. (Defrence In De Blainville, 1824; Dorsal view).
10. Pullenia bulloides (D’Orbigny, 1826; Dorsal view).
11. Saccammina complanata (Brady, 1884; Side view).
12. Textularia parvula, (Defrence In De Blainville, 1824; Dorsal
view).
13. Cyclammina cf. minima (LeRoy, 1939; Dorsal view).
14. Cyclammina cancellata (LeRoy, 1939; Dorsal view).
15. Ammodiscus glabratus (Linne, 1758; Dorsal view).
Conclusion
The biostratigraphic analysis of the four wells A, B, C and
D, showed the wells to be fairly rich and diverse in agglutinated
benthic foraminifera. Six biozones comprising Eggerella scabra TRZ,
Ammobaculites strathearnensis – Eggerella scabra, Cyclammina
cancellata – Ammobaculitesstrathearnensis, Haplophragmoides
8. Citation: Ajayi EO, Agboneni OE (2016) Neogene Deep Water Agglutinated Foraminiferal Biostratigraphy and Biozonation in Niger Delta, Nigeria. J
Earth Sci Clim Change 7: 371. doi: 10.4172/2157-7617.1000371
Page 8 of 8
Volume 7 • Issue 10 • 1000371J Earth Sci Clim Change, an open access journal
ISSN: 2157-7617
narivaensis – Eggerella scabra, Cyclammina cf. minima–Ammobaculites
strathearnensis and Saccammina complanata – Glomospira gordiales
IRZ. The biozones were calibrated to the geologic timeframe by means
of planktic foraminifera and calcareous nannofossils. The ages of the
biozones range from the Late Miocene to the Early Pliocene. Three of
the biozones have good stratigraphic correlation in the studied wells.
The biozones could impact hydrocarbon exploration and production
in the deep-water sector of the Niger Delta.
References
1. Adeniran BV (1997) Quantitative neogene plankton foraminiferal biostratigraphy
of western Niger Delta. Nigerian Association of Petroleum Explorationists
Bulletin 12: 54-69.
2. Ajayi EO, Okosun EA (2014a) Calcareous nannofossil biostratigraphy of A. B.
C. D Wells, Offshore Niger Delta. Nigeria. Earth Science Research 3: 108-123.
3. Ajayi EO, Okosun EA (2014b) Planktic foraminiferal biosratigraphy of A, B, C,
D Wells, Offshore Niger Delta. American International Journal of Contemporary
Research 4: 108-120.
4. Chukwu JN, Okosun EA, Alkali YB (2012) Foraminiferal biostratigraphy and
depositional environment of Oloibiri-1 well, Eastern Niger Delta, Nigeria.
Journal of Geography and Geology 4: 114-122.
5. Docker K, Rogl F (1988) Early cretaceous agglutinated foraminifera from
limestone-marl rhythmites of the Gresten Klippen belt. Eastern alps 41: 41-51.
6. Doust H, Omatsola E (1990) Niger Delta In: Edwards JD and Santogrossi PA
(eds) Divergent/passive margin basins. American Association of Petroleum
Geologists Memoir 48: 201-239.
7. Fadiya SL, Jaiyeola-Ganiyu FA, Fajemila OT (2014) Foraminifera
biostratigraphy and paleoenvironment of sediments from well AM- 2, Niger
Delta. Ife Journal of Science 16: 61-72.
8. Fajemila OT (2012) Foraminifera biostratigraphy and paleoenvironmental
studies of two wells from offshore Western Niger Delta. Ife Journal of Science
14: 369-384.
9. Gradstein FM, Berggren WA (1981) Flysch-type agglutinated foraminifera and
the Maastritchtian to Paleogene history of the Labrador and North Sea. Marine
Micropaleontology 6: 211-268.
10. Green RC, Kamiski MA, Sikora PJ (2004) Miocene deep water agglutinated
foraminifera from Viosca Knoll, offshore Louisiana (Gulf of Mexico). Proceedings
of the sixth International Workshop on agglutinated Foraminifera. Grzybowski
Fundation Special Publication 8: 119-144.
11. Haack RC, Sundararaman P, Diedjomahor J, Xiao H, Gant NJ, et al. (2000)
Niger Delta Petroleum Systems, Nigeria.
12. American Association of Petroleum Geologist Memoir (2001) Petroleum
Systems of South Atlantic Margins. 73: 213-231.
13. Hospers J (1971) The geology of the Niger delta area. The geology of Eastern
Atlantic Continental Margin. Great Britain Institute of Geological Science
Report 70: 121-142.
14. Kaminski MA, Gradstein FM, Scott DB, Mackinnon KD (1989) Neogene benthic
foraminiferal stratigraphy and deep water history of sites 645, 646 and 647,
Baffin Bay and Labrador Sea. Proceedings of the Ocean Drilling Program,
Scientific Results 105: 705-730.
15. Kaminski MA, Silye L, Kender S (2009) Miocene deep-water agglutinated
foraminifera from the Lomonosov Ridge and the opening of the Farm Strait.
Micropaleontology 55: 117-135.
16. Loeblich AR, Tappan H (1964) Treatise on invertebrate paleontology, part C:
Protista 2, Sarcodina chiefly: Thecamoebians and Foraminiferida. Univ Kansas
Press for Geol Soc Amer Lawrence 12: 900.
17. Loeblich AR, Tappan H (1987) Foraminiferal genera and their classification.
Van Nostrand Rienhold Company, New York, USA.
18. Murphy MA, Salvador A (1994) International stratigraphic guide - an abridged
version International Subcommission on Stratigraphic Classification of IUGS.
International Commission on Stratigraphy, Special Episodes.
19. Nagy J, Kamiski MA, Kuhnt W, Bremer MA (2000) Agglutinated foraminifera
from neritic to bathyal facies in the Paleogene of Spitsbergen and Berents sea.
Proceedings of the Fifth International Workshop on Agglutinated Foraminifera,
Grzybowski Foundation Special Publication 7: 333-361.
20. Nagy J, Kaminski MA, Gradstein FM, Johnston K (2004) Quantitative
foraminiferal and palynomorph biostratigraphy of the Paleogene in southwestern
Brent Sea. Proceedings of the Sixth International Workshop on Agglutinated
Foraminifera. Grzybowski Foundation Special Publication 8: 359- 379.
21. Obaje SO, Okosun EA (2013a) Benthic foraminiferal biozonation and correlation
of XY-1 Field, Offshore Western Niger Delta, Nigeria. International Journal of
Science and Technology 2: 536-542.
22. Obaje SO, Okosun EA (2013b) Taxonomic notes on marker planktonic
foraminifera of Tomboy Field, Offshore Western Niger Delta, Nigeria.
International Journal of Science and Technology 2: 622-627.
23. Obaje SO, Okosun EA (2013c) Planktic foraminiferal biozonation and
correlation of XY-1 Field, Western Niger Delta, Nigeria. International Journal of
Science and Technology 3: 160-166.
24. Obaje SO, Okosun EA (2013) Taxonomic notes on marker benthic foraminifera
of Tomboy Field, offshore western Niger Delta. International Journal of Science
and Technology 3: 357-364.
25. Ojo A (1996) Studies on biozonztion and paleoecology Neogene foraminifera
of central Niger delta. Unpublished PhD thesis, Obafemi Awolowo University,
Ile-Ife, Nigeria.
26. Okosun EA, Liebau A (1999) Foraminiferal biostratigraphy of Eastern Niger
Delta, Nigeria. Nigerian Association of Petroleum Explorationist Bulletin 14:
136 -156.
27. Okosun EA, Chukwu JN, Ajayi EO, Olatunji AO (2012) Biostratigraphy,
depositional environment and sequence stratigraphy of Akata field (2, 4, 6 and
7 wells), Eastern Niger Delta, Nigeria. International Journal of Scientific and
Engineering Research 3: 1-27.
28. Okosun EA, Chukwuma-Orji JN (2016) Calcareous benthic foraminiferal
biostratigraphy and paleoenvironment of deposition of KK-1 Well, Offshore
Western Niger Delta Nigeria. Journal of Basic and Applied Research
International 17: 202-210.
29. Okosun EA, Chukwuma-Orji JN (2016) Planktic foraminiferal biostratigraphy
and bio-chronology of KK-1 Well, western Niger Delta, Nigeria. Journal of Basic
and Applied Research International 17: 218-2016.
30. Ozumba MB (1995) Late Miocene-pliocene biostratigraphy offshore Niger
Delta. Nigerian Association of Petroleum Explorationists Bulletin 10: 40 - 48.
31. Ozumba MB, Amajor LC (1999) Evolutionary relationships in some benthic
foraminifera of the middle to late Miocene, Niger Delta. Nigeria Association of
Petroleum Explorationist Bulletin.14:157-16.
32. Petters SW (1982) Central West African Cretaceous -Tertiary benthic
foraminifera and stratigraphy. Paleontographical Acta 179: 1-104.
33. Petters SW (1983) Gulf of guinea planktonic foraminiferal biochronology and
geological history of the South Atlantic. Journal of Foraminiferal Research 13:
32-59.
34. Petters SW (1995) Foraminferal biofacies in the Nigerian rift and continental
margin Delta. In: Oti MN, Postma G. (eds.) Geology of Deltas, AA. Balkema,
Rotter-Dam 267.
35. Salami MB (1982) Bathyal benthonic foraminifera biofacies from the
Nigerian sector of the Gulf of Guinea (West Africa). Revista Espanola de
Micropaleontologia 14: 55-461.
36. Short KC, Stauble AJ (1967) Outline of the geology of Niger Delta. American
Association of Petroleum Geologists Bulletin 51: 761-779.
Citation: Ajayi EO, Agboneni OE (2016) Neogene Deep Water Agglutinated
Foraminiferal Biostratigraphy and Biozonation in Niger Delta, Nigeria. J Earth
Sci Clim Change 7: 371. doi: 10.4172/2157-7617.1000371