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.
Palaeopalynology; Definition, History, Methods and Benefits of studyNipun Govind T
Note on what is palaeopalynology and its history, methods and Benefits of study
Father of palaeopalynology
Disciplines of Palynology
study of fossil pollen grains
Folli excavation
P. Reinsch
Sample mounting and observation
Palaeobotany
Barathiyar University palaeobotany
Lithological details , sedimentology
To trace the history of vegetation
To study plant assemblage at a specific stratigraphic horizon
To correlate deposits and assigning dates
To study climatic change
To study extinct genera
To study evolution of plants and establish affinity
To study past distribution of flora
To study palaeoecology
To determine coal-bearing strata
To define ancient shoreline
Palynologists have developed a series of standard methods that are applied to collect, extract, identify, and describe organic-walled microfossils.
Sample collection
Palynological Extraction
Palynological Sample Mounting and Observation
Palynological Analysis
Vascular Cambium & Seasonal activity & its Role in Stem & RootFatima Ramay
Vascular Cambium & Seasonal activity & its Role in Stem & Root:
The vascular cambium (pl. cambia or cambiums) is a lateral meristem in the vascular tissue of plants.
The vascular cambium is a cylindrical layer of cambium that runs through the stem of a plant that undergoes secondary growth.
In Dicots:
The vascular cambium is in dicot stems and roots, located between the xylem and the phloem in the stem and root of a vascular plant, and is the source of both the secondary xylem growth (inwards, towards the pith) and the secondary phloem growth (outwards).
In Monocots:
Monocot stems, such as corn, palms and bamboos, do not have a vascular cambium and do not exhibit secondary growth by the production of concentric annual rings. They cannot increase in girth by adding lateral layers of cells as in conifers and woody dicots.
Cambium of some plants remains active for the entire period of their life, i.e., cambial cells divide and resulting cells mature to form xylem and phloem elements.
This type of seasonal activity usually found in the plants present in the tropical regions, and not all plants show cambial activity.
Percentage of ringless trees in the rain forests of;India : 75%Amazon : 43%Malaysia : 15%
In regions with definite seasonal climate; seasonal activity of cambium ceased with onset of unfavorable conditions; In Autumn, it enters the dormant state and lasts for the end of summer; In Spring, cambium again becomes active.
Duration of cambial activity is also affected by day-length, e.g., In Robinia pseudoacacia, cambium is dormant under short-day condition.
The cambium cells formed in circular in cross section from the beginning onwards.
The cambial ring is partially primary (fascicular cambium) and partially secondary (interfascicular cambium).
Periderm originates from the cortical cells (extra stelar in origin).
In Dicot stem, for mechanical support xylem is with comparatively smaller vessels, greater fibers and less parenchyma.
More amount of cork is produces for protection.
Lenticels on periderm are very prominent.
The cambial ring formed is wavy in the beginning and later becomes circular.
The cambium ring is completely secondary in origin.
Periderm originates from the pericycle (intra stelar in origin).
In Dicot root, xylem is with big thin walled vessels with few fibers and more parenchyma.
Less amount of cork is produced as root is underground.
Lenticels on periderm are not very prominent.
Palaeopalynology; Definition, History, Methods and Benefits of studyNipun Govind T
Note on what is palaeopalynology and its history, methods and Benefits of study
Father of palaeopalynology
Disciplines of Palynology
study of fossil pollen grains
Folli excavation
P. Reinsch
Sample mounting and observation
Palaeobotany
Barathiyar University palaeobotany
Lithological details , sedimentology
To trace the history of vegetation
To study plant assemblage at a specific stratigraphic horizon
To correlate deposits and assigning dates
To study climatic change
To study extinct genera
To study evolution of plants and establish affinity
To study past distribution of flora
To study palaeoecology
To determine coal-bearing strata
To define ancient shoreline
Palynologists have developed a series of standard methods that are applied to collect, extract, identify, and describe organic-walled microfossils.
Sample collection
Palynological Extraction
Palynological Sample Mounting and Observation
Palynological Analysis
Vascular Cambium & Seasonal activity & its Role in Stem & RootFatima Ramay
Vascular Cambium & Seasonal activity & its Role in Stem & Root:
The vascular cambium (pl. cambia or cambiums) is a lateral meristem in the vascular tissue of plants.
The vascular cambium is a cylindrical layer of cambium that runs through the stem of a plant that undergoes secondary growth.
In Dicots:
The vascular cambium is in dicot stems and roots, located between the xylem and the phloem in the stem and root of a vascular plant, and is the source of both the secondary xylem growth (inwards, towards the pith) and the secondary phloem growth (outwards).
In Monocots:
Monocot stems, such as corn, palms and bamboos, do not have a vascular cambium and do not exhibit secondary growth by the production of concentric annual rings. They cannot increase in girth by adding lateral layers of cells as in conifers and woody dicots.
Cambium of some plants remains active for the entire period of their life, i.e., cambial cells divide and resulting cells mature to form xylem and phloem elements.
This type of seasonal activity usually found in the plants present in the tropical regions, and not all plants show cambial activity.
Percentage of ringless trees in the rain forests of;India : 75%Amazon : 43%Malaysia : 15%
In regions with definite seasonal climate; seasonal activity of cambium ceased with onset of unfavorable conditions; In Autumn, it enters the dormant state and lasts for the end of summer; In Spring, cambium again becomes active.
Duration of cambial activity is also affected by day-length, e.g., In Robinia pseudoacacia, cambium is dormant under short-day condition.
The cambium cells formed in circular in cross section from the beginning onwards.
The cambial ring is partially primary (fascicular cambium) and partially secondary (interfascicular cambium).
Periderm originates from the cortical cells (extra stelar in origin).
In Dicot stem, for mechanical support xylem is with comparatively smaller vessels, greater fibers and less parenchyma.
More amount of cork is produces for protection.
Lenticels on periderm are very prominent.
The cambial ring formed is wavy in the beginning and later becomes circular.
The cambium ring is completely secondary in origin.
Periderm originates from the pericycle (intra stelar in origin).
In Dicot root, xylem is with big thin walled vessels with few fibers and more parenchyma.
Less amount of cork is produced as root is underground.
Lenticels on periderm are not very prominent.
This presentation was given by Dr. Avishek Bhattacharjee in Botanical Nomenclature Course held in Botanical Survey of India, Eastern Regional Centre, Shillong in November 2016. This may be helpful to the undergraduate and post graduate Botany students to understand different types of taxonomic literature, especially Flora, Revision and Monograph.
This is an excerpt of basic concepts and principles of palynology as it applies to systematics and taxonomy of plants. Credits are given to the authors and owners of photographs used in the entire presentation.
Gnetum: A Powerpoint Presentation on Gymnospemsshivduraigaran
The Gymnosperms are a group of seed-producing plants (spermatophytes) that includes conifers (Pinophyta), cycads, Ginkgo, and gnetophytes. The term "gymnosperm" comes from the Greek composite word γυμνόσπερμος (γυμνός gymnos, "naked" and σπέρμα sperma, "seed"), meaning "naked seeds". The name is based on the unenclosed condition of their seeds (called ovules in their unfertilized state). The non-encased condition of their seeds stands in contrast to the seeds and ovules of flowering plants (angiosperms), which are enclosed within an ovary. Gymnosperm seeds develop either on the surface of scales or leaves, which are often modified to form cones, or solitary as in Yew, Torreya, Ginkgo.
The gymnosperms and angiosperms together compose the spermatophytes or seed plants. The gymnosperms are divided into six phyla. Organisms that belong to the Cycadophyta, Ginkgophyta, Gnetophyta, and Pinophyta (also known as Coniferophyta) phyla are still in existence while those in the Pteridospermales and Cordaitales phyla are now extinct.
By far the largest group of living gymnosperms are the conifers (pines, cypresses, and relatives), followed by cycads, gnetophytes (Gnetum, Ephedra and Welwitschia), and Ginkgo biloba (a single living species). Roots in some genera have fungal association with roots in the form of micorrhiza(Pinus), while in some others(Cycas) small specialised roots called coralloid roots are associated with nitrogen fixing cyanobacteria.
Gnetum is a genus of gymnosperms, the sole genus in the family Gnetaceae and order Gnetales. They are tropical evergreen trees, shrubs and lianas. Unlike other gymnosperms, they possess vessel elements in the xylem. Some species have been proposed to have been the first plants to be insect-pollinated as their fossils occur in association with extinct pollinating scorpion flies. Molecular phylogenies based on nuclear and plastid sequences from most of the species indicate hybridization among some of the Southeast Asian species. Fossil-calibrated molecular-clocks suggest that the Gnetum lineages now found in Africa, South America and Southeast Asia are the result of ancient long-distance dispersal across seawater
This presentation was given by Dr. Avishek Bhattacharjee in Botanical Nomenclature Course held in Botanical Survey of India, Eastern Regional Centre, Shillong in November 2016. This may be helpful to the undergraduate and post graduate Botany students to understand different types of taxonomic literature, especially Flora, Revision and Monograph.
This is an excerpt of basic concepts and principles of palynology as it applies to systematics and taxonomy of plants. Credits are given to the authors and owners of photographs used in the entire presentation.
Gnetum: A Powerpoint Presentation on Gymnospemsshivduraigaran
The Gymnosperms are a group of seed-producing plants (spermatophytes) that includes conifers (Pinophyta), cycads, Ginkgo, and gnetophytes. The term "gymnosperm" comes from the Greek composite word γυμνόσπερμος (γυμνός gymnos, "naked" and σπέρμα sperma, "seed"), meaning "naked seeds". The name is based on the unenclosed condition of their seeds (called ovules in their unfertilized state). The non-encased condition of their seeds stands in contrast to the seeds and ovules of flowering plants (angiosperms), which are enclosed within an ovary. Gymnosperm seeds develop either on the surface of scales or leaves, which are often modified to form cones, or solitary as in Yew, Torreya, Ginkgo.
The gymnosperms and angiosperms together compose the spermatophytes or seed plants. The gymnosperms are divided into six phyla. Organisms that belong to the Cycadophyta, Ginkgophyta, Gnetophyta, and Pinophyta (also known as Coniferophyta) phyla are still in existence while those in the Pteridospermales and Cordaitales phyla are now extinct.
By far the largest group of living gymnosperms are the conifers (pines, cypresses, and relatives), followed by cycads, gnetophytes (Gnetum, Ephedra and Welwitschia), and Ginkgo biloba (a single living species). Roots in some genera have fungal association with roots in the form of micorrhiza(Pinus), while in some others(Cycas) small specialised roots called coralloid roots are associated with nitrogen fixing cyanobacteria.
Gnetum is a genus of gymnosperms, the sole genus in the family Gnetaceae and order Gnetales. They are tropical evergreen trees, shrubs and lianas. Unlike other gymnosperms, they possess vessel elements in the xylem. Some species have been proposed to have been the first plants to be insect-pollinated as their fossils occur in association with extinct pollinating scorpion flies. Molecular phylogenies based on nuclear and plastid sequences from most of the species indicate hybridization among some of the Southeast Asian species. Fossil-calibrated molecular-clocks suggest that the Gnetum lineages now found in Africa, South America and Southeast Asia are the result of ancient long-distance dispersal across seawater
Cenomanian – Turonian Foraminifera and Palynomorphs from the Calabar Flank, S...Premier Publishers
One of the most spectacular signatures of global “Oceanic Anoxic Events” (OAEs) of the Cretaceous was deposited at the Cenomanian–Turonian Boundary. This global oceanic anoxic event is also referred to as Cenomanian–Turonian Boundary Event (CTBE). This event is marked by the deposition of finely laminated organic carbon rich sediments deposited under oxygen depleted conditions. The main goal of the present research is to get a better understanding of the marine biota characterizing the oceanic anoxic event in the Calabar Flank. Core samples obtained from two (2) study wells in the Calabar Flank, southeastern Nigeria were utilized for this study and standard biostratigraphic sample preparation/ separation and analytical approaches were applied in the course of the study. The Cenomanian – Turonian age was assigned based on age diagnostic foraminifera (Hedbergella crassa, Heterohelix moremani, Heterohelix planata, Heterohelix reussi, Hedbergella delrioensis, Hedbergella planispira) and age diagnostic palynomorphs (Steevesipollenites binodosus, Ephedripites sp, Leiotriletes sp, Classopollis sp, Classopollis classoides, Classopollis annulatus, Ephedripites jansonii, Cretacaeiporites mulleri, Cretacaeiporites polygonalis, Galeacornea clavis and Triorites africaensis). The sediments of the study wells were deposited in a range of environments from non-marine to mid neritic and the recovered foraminifera are characterized by the presence of abundant but dwarfed planktic forms and low diversity of dwarfed arenaceous forms at some intervals which strongly support deposition in an oxygen depleted environment.
The study of the past is to understand the human behavioral activities and cultural progress in a sequential order based on tangible and intangible evidences in a given socio-economic-cultural context. The Archaeological data has to be placed in a chronological order to understand this sequential cultural process. For this, various dating methods are being used in the archaeological investigations.
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.
This presentation is about Alkaloids present in plants. It is about its types, properties, tests, extraction as well as there uses. Other than general introduction on alkaloids we have explained about three plant examples which contain alkaloids.
This ppt tells the story of a boy who has to complete his homework which is about microbial inoculation. through this story one can learn about types of inoculants and microbial inoculant uses in agriculture.
Photosynthesis has two types of reaction, first one is light reaction (Hill's reaction) and the other one is dark reaction (Blackman's reaction). In this presentation you learn full mechanism of how plants produce energy for their survival by photosynthesis.
Photosynthesis has two types of reaction, first one is light reaction (Hill's reaction) and the other one is dark reaction (Blackman's reaction). In this presentation you learn full mechanism of how plants produce energy for their survival by photosynthesis.
This ppt gives you an idea about Hardy Weinberg principle. Hardy from England and Weinberg from Germany both individually came up with Hardy - Weinberg Law in 1908.
Parasexual cycle was first introduced by Guido Pontecarvo and Roper in dueteromycete members. In this sexual reproduction is absent. It is a cycle in which their is no specific time for lasmogamy, karyogamy and meiosis. They derive their sexual benefits from parasexuality.
importance of this cycle can be seen in industrial process, new and better strain,analysis of genetic and physiological processes of perfect and imperfect. it is also successful in genetic control of pathogenecity and host range in fusarium species.
This ppt has been made by Xanthophyceae also known as yellow green algae. It occupies second position in algae classification by F.E Fritsch. It is classified into four orders. It contain xanthophyll in large amount that gives it yellow colour, hence it is commonly know as yellow green algae.
Comparing Evolved Extractive Text Summary Scores of Bidirectional Encoder Rep...University of Maribor
Slides from:
11th International Conference on Electrical, Electronics and Computer Engineering (IcETRAN), Niš, 3-6 June 2024
Track: Artificial Intelligence
https://www.etran.rs/2024/en/home-english/
ESR spectroscopy in liquid food and beverages.pptxPRIYANKA PATEL
With increasing population, people need to rely on packaged food stuffs. Packaging of food materials requires the preservation of food. There are various methods for the treatment of food to preserve them and irradiation treatment of food is one of them. It is the most common and the most harmless method for the food preservation as it does not alter the necessary micronutrients of food materials. Although irradiated food doesn’t cause any harm to the human health but still the quality assessment of food is required to provide consumers with necessary information about the food. ESR spectroscopy is the most sophisticated way to investigate the quality of the food and the free radicals induced during the processing of the food. ESR spin trapping technique is useful for the detection of highly unstable radicals in the food. The antioxidant capability of liquid food and beverages in mainly performed by spin trapping technique.
Remote Sensing and Computational, Evolutionary, Supercomputing, and Intellige...University of Maribor
Slides from talk:
Aleš Zamuda: Remote Sensing and Computational, Evolutionary, Supercomputing, and Intelligent Systems.
11th International Conference on Electrical, Electronics and Computer Engineering (IcETRAN), Niš, 3-6 June 2024
Inter-Society Networking Panel GRSS/MTT-S/CIS Panel Session: Promoting Connection and Cooperation
https://www.etran.rs/2024/en/home-english/
The ability to recreate computational results with minimal effort and actionable metrics provides a solid foundation for scientific research and software development. When people can replicate an analysis at the touch of a button using open-source software, open data, and methods to assess and compare proposals, it significantly eases verification of results, engagement with a diverse range of contributors, and progress. However, we have yet to fully achieve this; there are still many sociotechnical frictions.
Inspired by David Donoho's vision, this talk aims to revisit the three crucial pillars of frictionless reproducibility (data sharing, code sharing, and competitive challenges) with the perspective of deep software variability.
Our observation is that multiple layers — hardware, operating systems, third-party libraries, software versions, input data, compile-time options, and parameters — are subject to variability that exacerbates frictions but is also essential for achieving robust, generalizable results and fostering innovation. I will first review the literature, providing evidence of how the complex variability interactions across these layers affect qualitative and quantitative software properties, thereby complicating the reproduction and replication of scientific studies in various fields.
I will then present some software engineering and AI techniques that can support the strategic exploration of variability spaces. These include the use of abstractions and models (e.g., feature models), sampling strategies (e.g., uniform, random), cost-effective measurements (e.g., incremental build of software configurations), and dimensionality reduction methods (e.g., transfer learning, feature selection, software debloating).
I will finally argue that deep variability is both the problem and solution of frictionless reproducibility, calling the software science community to develop new methods and tools to manage variability and foster reproducibility in software systems.
Exposé invité Journées Nationales du GDR GPL 2024
This presentation explores a brief idea about the structural and functional attributes of nucleotides, the structure and function of genetic materials along with the impact of UV rays and pH upon them.
Nucleophilic Addition of carbonyl compounds.pptxSSR02
Nucleophilic addition is the most important reaction of carbonyls. Not just aldehydes and ketones, but also carboxylic acid derivatives in general.
Carbonyls undergo addition reactions with a large range of nucleophiles.
Comparing the relative basicity of the nucleophile and the product is extremely helpful in determining how reversible the addition reaction is. Reactions with Grignards and hydrides are irreversible. Reactions with weak bases like halides and carboxylates generally don’t happen.
Electronic effects (inductive effects, electron donation) have a large impact on reactivity.
Large groups adjacent to the carbonyl will slow the rate of reaction.
Neutral nucleophiles can also add to carbonyls, although their additions are generally slower and more reversible. Acid catalysis is sometimes employed to increase the rate of addition.
Toxic effects of heavy metals : Lead and Arsenicsanjana502982
Heavy metals are naturally occuring metallic chemical elements that have relatively high density, and are toxic at even low concentrations. All toxic metals are termed as heavy metals irrespective of their atomic mass and density, eg. arsenic, lead, mercury, cadmium, thallium, chromium, etc.
The Evolution of Science Education PraxiLabs’ Vision- Presentation (2).pdfmediapraxi
The rise of virtual labs has been a key tool in universities and schools, enhancing active learning and student engagement.
💥 Let’s dive into the future of science and shed light on PraxiLabs’ crucial role in transforming this field!
The use of Nauplii and metanauplii artemia in aquaculture (brine shrimp).pptxMAGOTI ERNEST
Although Artemia has been known to man for centuries, its use as a food for the culture of larval organisms apparently began only in the 1930s, when several investigators found that it made an excellent food for newly hatched fish larvae (Litvinenko et al., 2023). As aquaculture developed in the 1960s and ‘70s, the use of Artemia also became more widespread, due both to its convenience and to its nutritional value for larval organisms (Arenas-Pardo et al., 2024). The fact that Artemia dormant cysts can be stored for long periods in cans, and then used as an off-the-shelf food requiring only 24 h of incubation makes them the most convenient, least labor-intensive, live food available for aquaculture (Sorgeloos & Roubach, 2021). The nutritional value of Artemia, especially for marine organisms, is not constant, but varies both geographically and temporally. During the last decade, however, both the causes of Artemia nutritional variability and methods to improve poorquality Artemia have been identified (Loufi et al., 2024).
Brine shrimp (Artemia spp.) are used in marine aquaculture worldwide. Annually, more than 2,000 metric tons of dry cysts are used for cultivation of fish, crustacean, and shellfish larva. Brine shrimp are important to aquaculture because newly hatched brine shrimp nauplii (larvae) provide a food source for many fish fry (Mozanzadeh et al., 2021). Culture and harvesting of brine shrimp eggs represents another aspect of the aquaculture industry. Nauplii and metanauplii of Artemia, commonly known as brine shrimp, play a crucial role in aquaculture due to their nutritional value and suitability as live feed for many aquatic species, particularly in larval stages (Sorgeloos & Roubach, 2021).
Deep Behavioral Phenotyping in Systems Neuroscience for Functional Atlasing a...Ana Luísa Pinho
Functional Magnetic Resonance Imaging (fMRI) provides means to characterize brain activations in response to behavior. However, cognitive neuroscience has been limited to group-level effects referring to the performance of specific tasks. To obtain the functional profile of elementary cognitive mechanisms, the combination of brain responses to many tasks is required. Yet, to date, both structural atlases and parcellation-based activations do not fully account for cognitive function and still present several limitations. Further, they do not adapt overall to individual characteristics. In this talk, I will give an account of deep-behavioral phenotyping strategies, namely data-driven methods in large task-fMRI datasets, to optimize functional brain-data collection and improve inference of effects-of-interest related to mental processes. Key to this approach is the employment of fast multi-functional paradigms rich on features that can be well parametrized and, consequently, facilitate the creation of psycho-physiological constructs to be modelled with imaging data. Particular emphasis will be given to music stimuli when studying high-order cognitive mechanisms, due to their ecological nature and quality to enable complex behavior compounded by discrete entities. I will also discuss how deep-behavioral phenotyping and individualized models applied to neuroimaging data can better account for the subject-specific organization of domain-general cognitive systems in the human brain. Finally, the accumulation of functional brain signatures brings the possibility to clarify relationships among tasks and create a univocal link between brain systems and mental functions through: (1) the development of ontologies proposing an organization of cognitive processes; and (2) brain-network taxonomies describing functional specialization. To this end, tools to improve commensurability in cognitive science are necessary, such as public repositories, ontology-based platforms and automated meta-analysis tools. I will thus discuss some brain-atlasing resources currently under development, and their applicability in cognitive as well as clinical neuroscience.
What is greenhouse gasses and how many gasses are there to affect the Earth.moosaasad1975
What are greenhouse gasses how they affect the earth and its environment what is the future of the environment and earth how the weather and the climate effects.
2. z
Aspects of Paleobotany
To decipher paleo - vegetation and
paleoclimate.
Provide evidence for origin and
evolution of plants
To ascertain paleophytogeography
Calculation of age of the rocks.
3. z
TO DECIPHER PALEOVEGETATION
AND PALEOCLIMATE
Some plants escape from final destruction and survive
as fossils. These plant fossils serve as tool for past
vegetational studies.
From remote geological past a correlation exists
between fossil plants and their surrounding
environments which serve as an index for the
interpretation of the past climate.
4. z
PROVIDE EVIDENCE FOR ORIGIN AND
EVOLUTION OF PLANTS
The study of fossil plants has an importance in understanding the origin and evolution of
different plant groups through ages.
A most dramatic event took place in the history of plant life i.e. the evolution of land plants
during Silurian period.
To acquire terrestrial habit leaving their aquatic habitat the plants needed to be self-supportive
and they had to be able to withstand the drying effect of the atmosphere leading to a series of
adaptations, such as development of cuticle in their outer surface to check desiccation,
formation of roots as anchoring and absorptive organ, stomata for gaseous
exchange, vascular tissue for conduction.
Thus, during Silurian-Devonian periods more and increasingly complex fossil plants rep-
resented by Rhyniopsida appeared with such adaptive features. Gymnosperms became
more successful than the pteridophytes by having selective advantage of seed formation.
This group of plants first appeared in the Devonian period and reached a climax in the Mesozoic
Era which constituted the world’s dominant vegetation. Still later, at the end of Mesozoic Era
(early Cretaceous) the angiosperms got evolved and became dominant replacing most of the
pteridophytes and gymnosperms.
5. z
TO ASCERTAIN
PALEOPHYTOGEOGRAPHY
The fossil evidence shows a clear floral continuity ranging in age
from the Upper Carboniferous to the beginning of the
Cretaceous.
Hitory prici
Epidemo
Forcast
Scope andsig
variation
6. z
CALCULATION OF AGE OF
THE ROCKS
Radioactive elements are generally used for dating the rocks. But
sometimes, index fossils are used to date a rock of unknown
origin. Any index fossil the rock contains must be carefully
studied with precise information about its systematics and age.
Using of such index fossils the age of an unknown rock can be
determined.
7. z
APPLIED ASPECTS OF
FOSSIL PLANTS
Exploration of oil is done by;
Determining the thermal
alteration index:
Palynostratigraphy
Defining of ancient
shorelines
8. z
APPLIED ASPECTS OF
STUDYING FOSSIL PLANT
To provide useful information in the exploration of fossil fuel like coal and oil.
The plant inhabitants of Palaeozoic - Mesozoic swamps served as a
source of coal and formed coal seams. Accumulation of plant materials with
a variety of minerals coupled with mud, silt and other organic materials constitute
a coal bed. Many plant parts get beautifully preserved as fossils in the stratified
sedimentary layers which are closely adjacent to coal layers.
Palaeobotanical studies have served as a tool to ascertain age of coal layers,
their lateral extent and quality of coal deposits. In India, the palaeobotanical
study has helped to demarcate the nature and quality of Raniganj coal (Permian
Age) from that of Rajmahal coal (Jurassic Age).
9. z EXPLORATION OF OIL IS
DONE BY;
DETERMINING THE THERMAL
ALTERATION INDEX:
The sporopollenin present in the walls of pollen and spores
undergo post depositional thermal changes in course of the
geological ages. These thermal changes brought about
carbonisation resulting in changes in exine colour of fossil
pollen and spores in transmitted light.
Pearson’s colour chart directly relates exine colour to a
numerical index called Thermal Alteration Index (TAI)
which is a measure of the degree of carbonisation.
10. z
PALYNOSTRATIGRAPHY
To avoid unnecessary and costly drilling the determination of oil
zone is made by comparing the biostratigraphic data of one to
those of the others.
11. z
DEFINING OF ANCIENT
SHORELINES
The sediments parallel to sea shore are rich in oil. The density of
pollen and spores decreases in the seaward direction.
Sedimentary environment with pollen assemblages are limited
to near shore marine or lacustrine waters. Thus by the study of
microfossils along with marine microfossils if presents, one can
determine the distance and direction of ancient shore lines,
possibly bearing oil deposits.
13. z
PETROLEUM EXTRACTION
PROCESS
STEP 1: PREPARING THE RIG SITE
STEP 2: DRILLING
STEP 3: CEMENTING AND TESTING
STEP 4: WELL COMPLETION
STEP 5: FRACKING
STEP 6: PRODUCTION AND FRACKING FLUID RECYCLING
STEP 7: WELL ABANDONMENT AND LAND RESTORATION
18. z
COAL EXPLORATION
Remote sensing - Using radar, sonar, satellite images to gain
information from a distance. These images help us to locate
possible mining sites, as well as study existing mining sites for
possible expansion.
Geophysical methods make use of geology and the physical
properties of the minerals to detect them underground.
Geochemical methods combine the chemistry of the
minerals with the geology of an area to help identify which
compounds are present in the ore and how much of it is
present.
For example, when an ore body is identified, samples are
taken to analyse the mineral content of the ore.
21. z
ROLE OF PLANTS IN THE
FORMATION OF COAL
Richard Kirwan, the famous Irish chemist argued that coal was a
mineral deposit and was not of organic origin.
Parkinson, the English naturalist, contended that it was of
vegetable origin.
He demonstrated that by the fossil plants found within coal.
The botanical origin of coal was further strengthen by extraction
of spores from coals and later by analysis of coal thin sections.
It is clear that the study of fossil plants has played an important
role in our understanding of coal.
23. z
A MIRE AS A DYNAMIC
SYSTEM
HERBACEOUS OR
SHRUBY PLANTS
ABUNDANCE OF
SPORES AND
CUTICLES
EXINITE
LARGE TREE
ABUNDANT
WOODY TISSUE
VITRINITE
SMALL SHRUBS
LARGE AMOUNT
OF WOOD
CARDAIXYLON
TREES LOT OF PITH
CALAMITES,
LYCOPODS
CARBONIFEROUS PERIOD
24. z
REFERENCES
SIYAVULA - MINING IN SOUTH AFRICA
https://intl.siyavula.com/read/science/grade-9/mining-of-mineral-resources/25-
mining-of-mineral-resources?id=toc-id-14
THE SEVEN STEPS OF OIL AND NATURAL GAS
EXTRACTION
https://www.cred.org/seven-steps-of-oil-and-natural-gas-extraction/
PETROLEUM EXPLORATION
http://www.oil-gasportal.com/upstream/petroleum-exploration/?print=pdf