A presentation on Hydrothermal wall rock alteration with case studies on geophysical applications.
References : https://drive.google.com/drive/folders/16VSZMPMASMNVB47JdBUa_7udBk1qvK2U?usp=sharing
A presentation on Hydrothermal wall rock alteration with case studies on geophysical applications.
References : https://drive.google.com/drive/folders/16VSZMPMASMNVB47JdBUa_7udBk1qvK2U?usp=sharing
Komattite
Named after the Komati River in South Africa.
first described by Morris and Richard (twins) for ultramafic units in the Barberton Greenstone belt of South Africa.
Mostly of komatiite are Archean age
distributed in the Archaean shield areas.
Also a few are Proterozoic and Phanerozoic.
In all ages komatiites are highly magnesium.
Mostly a volcanic rock; occasionally intrusive.
Mafic rocks were identified as extrusive because of their volcanic textures and structures, and they seem to have been accepted as a normal component of Archean volcanic successions, Abitibi in Canada.
The ultramafic rocks were interpreted as intrusive which are founded as sills and dykes, Barberton in South Africa.
Spinifex texture-typical of Komatiites:
Historical geology Is the branch which deals with the history of the rocks of the earth’s crust with special emphasis on their approximate time of formation and the climate changes they have undergone since their formation.
ELEMENTS OF CORRELATION, STRUCTURAL FEATURES, METHOD OF STRATIGRAPHIC CORRELATION ,
Three principle kinds of correlations
Komattite
Named after the Komati River in South Africa.
first described by Morris and Richard (twins) for ultramafic units in the Barberton Greenstone belt of South Africa.
Mostly of komatiite are Archean age
distributed in the Archaean shield areas.
Also a few are Proterozoic and Phanerozoic.
In all ages komatiites are highly magnesium.
Mostly a volcanic rock; occasionally intrusive.
Mafic rocks were identified as extrusive because of their volcanic textures and structures, and they seem to have been accepted as a normal component of Archean volcanic successions, Abitibi in Canada.
The ultramafic rocks were interpreted as intrusive which are founded as sills and dykes, Barberton in South Africa.
Spinifex texture-typical of Komatiites:
Historical geology Is the branch which deals with the history of the rocks of the earth’s crust with special emphasis on their approximate time of formation and the climate changes they have undergone since their formation.
ELEMENTS OF CORRELATION, STRUCTURAL FEATURES, METHOD OF STRATIGRAPHIC CORRELATION ,
Three principle kinds of correlations
Sandstones are an important group of sedimentary rocks. I suppose a good estimate of the percentage of sedimentary rocks that would be classified as sandstones is about 25%.
LGC field course in the Book Cliffs, UT: Presentation 14 of 14 (Thompson Cany...William W. Little
Preview presentation on the Desert Member of the Blackhawk Formation and the Castigate Sandstone in Thompson Canyon for a professional field course titled: THE BOOK CLIFFS: A CASE STUDY IN COASTAL SEQUENCE STRATIGRAPHY, offered annually through W.W. LITTLE GEOLOGICAL CONSULTING (also offered by SCA). See details at: HTTP://LITTLEWW.WORDPRESS.COM.
LGC field course in the Book Cliffs, UT: Presentation 13 of 14 (Blue Castle B...William W. Little
Preview presentation on the Kenilworth through Desert Members of the Blackhawk Formation and the Castlegate Sandstone from the Blue Castle Butte area to Gunnison Butte for a professional field course titled: THE BOOK CLIFFS: A CASE STUDY IN COASTAL SEQUENCE STRATIGRAPHY, offered annually through W.W. LITTLE GEOLOGICAL CONSULTING (also offered by SCA). See details at: HTTP://LITTLEWW.WORDPRESS.COM.
LGC field course in the Book Cliffs, UT: Presentation 11 of 14 (Woodside Cany...William W. Little
Preview presentation on the Sunnyside Member of the Blackhawk Formation in Woodside Canyon for a professional field course titled: THE BOOK CLIFFS: A CASE STUDY IN COASTAL SEQUENCE STRATIGRAPHY, offered annually through W.W. LITTLE GEOLOGICAL CONSULTING (also offered by SCA). See details at: HTTP://LITTLEWW.WORDPRESS.COM.
LGC field course in the Book Cliffs, UT: Presentation 10 of 14 (Woodside Cany...William W. Little
Preview presentation on the Kenilworth Member of the Blackhawk Formation in Woodside Canyon for a professional field course titled: THE BOOK CLIFFS: A CASE STUDY IN COASTAL SEQUENCE STRATIGRAPHY, offered annually through W.W. LITTLE GEOLOGICAL CONSULTING (also offered by SCA). See details at: HTTP://LITTLEWW.WORDPRESS.COM.
LGC field course in the Book Cliffs, UT: Presentation 9 of 14 (Coal Creek & S...William W. Little
Preview presentation on the Aberdeen Member of the Blackhawk Formation in Coal Creek and Soldier Canyons for a professional field course titled: THE BOOK CLIFFS: A CASE STUDY IN COASTAL SEQUENCE STRATIGRAPHY, offered annually through W.W. LITTLE GEOLOGICAL CONSULTING (also offered by SCA). See details at: HTTP://LITTLEWW.WORDPRESS.COM.
LGC field course in the Book Cliffs, UT: Presentation 7 of 14 (Spring Canyon ...William W. Little
Preview presentation on the Spring Canyon Member of the Blackhawk Formation in Spring Canyon and Sowbelly Gulch for a professional field course titled: THE BOOK CLIFFS: A CASE STUDY IN COASTAL SEQUENCE STRATIGRAPHY, offered annually through W.W. LITTLE GEOLOGICAL CONSULTING (also offered by SCA). See details at: HTTP://LITTLEWW.WORDPRESS.COM.
LGC field course in the Book Cliffs, UT: Presentation 5 of 14 (Gentile Wash -...William W. Little
Preview presentation on the Storrs Member of the Star Point Sandstone in Spring Canyon and the Spring Canyon Member of the Blackhawk Formation for a professional field course titled: THE BOOK CLIFFS: A CASE STUDY IN COASTAL SEQUENCE STRATIGRAPHY, offered annually through W.W. LITTLE GEOLOGICAL CONSULTING (also offered by SCA). See details at: HTTP://LITTLEWW.WORDPRESS.COM.
LGC field course in the Book Cliffs, UT: Presentation 4 of 14 (Spring Canyon ...William W. Little
Preview presentation on the Panther Tongue of the Star Point Sandstone in Spring Canyon for a professional field course titled: THE BOOK CLIFFS: A CASE STUDY IN COASTAL SEQUENCE STRATIGRAPHY, offered annually through W.W. LITTLE GEOLOGICAL CONSULTING (also offered by SCA). See details at: HTTP://LITTLEWW.WORDPRESS.COM.
LGC field course in the Book Cliffs, UT: Presentation 3 of 14 (Gentile Wash -...William W. Little
Preview presentation on the Panther Tongue of the Star Point Sandstone in Gentile Wash for a professional field course titled: THE BOOK CLIFFS: A CASE STUDY IN COASTAL SEQUENCE STRATIGRAPHY, offered annually through W.W. LITTLE GEOLOGICAL CONSULTING (also offered by SCA). See details at: HTTP://LITTLEWW.WORDPRESS.COM.
LGC field course in the Book Cliffs, UT: Presentation 2 of 14 (Stratigraphic ...William W. Little
Stratigraphic overview for a professional field course titled: THE BOOK CLIFFS: A CASE STUDY IN COASTAL SEQUENCE STRATIGRAPHY, offered annually through W.W. LITTLE GEOLOGICAL CONSULTING (also offered by SCA). See details at: HTTP://LITTLEWW.WORDPRESS.COM.
LGC field course in the Book Cliffs, UT: Presentation 1 of 14 (Principles of ...William W. Little
Introductory presentation for a professional field course titled: THE BOOK CLIFFS: A CASE STUDY IN COASTAL SEQUENCE STRATIGRAPHY, offered annually through W.W. LITTLE GEOLOGICAL CONSULTING (also offered by SCA). See details at: HTTP://LITTLEWW.WORDPRESS.COM.
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.
Observation of Io’s Resurfacing via Plume Deposition Using Ground-based Adapt...Sérgio Sacani
Since volcanic activity was first discovered on Io from Voyager images in 1979, changes
on Io’s surface have been monitored from both spacecraft and ground-based telescopes.
Here, we present the highest spatial resolution images of Io ever obtained from a groundbased telescope. These images, acquired by the SHARK-VIS instrument on the Large
Binocular Telescope, show evidence of a major resurfacing event on Io’s trailing hemisphere. When compared to the most recent spacecraft images, the SHARK-VIS images
show that a plume deposit from a powerful eruption at Pillan Patera has covered part
of the long-lived Pele plume deposit. Although this type of resurfacing event may be common on Io, few have been detected due to the rarity of spacecraft visits and the previously low spatial resolution available from Earth-based telescopes. The SHARK-VIS instrument ushers in a new era of high resolution imaging of Io’s surface using adaptive
optics at visible wavelengths.
Nutraceutical market, scope and growth: Herbal drug technologyLokesh Patil
As consumer awareness of health and wellness rises, the nutraceutical market—which includes goods like functional meals, drinks, and dietary supplements that provide health advantages beyond basic nutrition—is growing significantly. As healthcare expenses rise, the population ages, and people want natural and preventative health solutions more and more, this industry is increasing quickly. Further driving market expansion are product formulation innovations and the use of cutting-edge technology for customized nutrition. With its worldwide reach, the nutraceutical industry is expected to keep growing and provide significant chances for research and investment in a number of categories, including vitamins, minerals, probiotics, and herbal supplements.
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.
Richard's aventures in two entangled wonderlandsRichard Gill
Since the loophole-free Bell experiments of 2020 and the Nobel prizes in physics of 2022, critics of Bell's work have retreated to the fortress of super-determinism. Now, super-determinism is a derogatory word - it just means "determinism". Palmer, Hance and Hossenfelder argue that quantum mechanics and determinism are not incompatible, using a sophisticated mathematical construction based on a subtle thinning of allowed states and measurements in quantum mechanics, such that what is left appears to make Bell's argument fail, without altering the empirical predictions of quantum mechanics. I think however that it is a smoke screen, and the slogan "lost in math" comes to my mind. I will discuss some other recent disproofs of Bell's theorem using the language of causality based on causal graphs. Causal thinking is also central to law and justice. I will mention surprising connections to my work on serial killer nurse cases, in particular the Dutch case of Lucia de Berk and the current UK case of Lucy Letby.
Earliest Galaxies in the JADES Origins Field: Luminosity Function and Cosmic ...Sérgio Sacani
We characterize the earliest galaxy population in the JADES Origins Field (JOF), the deepest
imaging field observed with JWST. We make use of the ancillary Hubble optical images (5 filters
spanning 0.4−0.9µm) and novel JWST images with 14 filters spanning 0.8−5µm, including 7 mediumband filters, and reaching total exposure times of up to 46 hours per filter. We combine all our data
at > 2.3µm to construct an ultradeep image, reaching as deep as ≈ 31.4 AB mag in the stack and
30.3-31.0 AB mag (5σ, r = 0.1” circular aperture) in individual filters. We measure photometric
redshifts and use robust selection criteria to identify a sample of eight galaxy candidates at redshifts
z = 11.5 − 15. These objects show compact half-light radii of R1/2 ∼ 50 − 200pc, stellar masses of
M⋆ ∼ 107−108M⊙, and star-formation rates of SFR ∼ 0.1−1 M⊙ yr−1
. Our search finds no candidates
at 15 < z < 20, placing upper limits at these redshifts. We develop a forward modeling approach to
infer the properties of the evolving luminosity function without binning in redshift or luminosity that
marginalizes over the photometric redshift uncertainty of our candidate galaxies and incorporates the
impact of non-detections. We find a z = 12 luminosity function in good agreement with prior results,
and that the luminosity function normalization and UV luminosity density decline by a factor of ∼ 2.5
from z = 12 to z = 14. We discuss the possible implications of our results in the context of theoretical
models for evolution of the dark matter halo mass function.
Professional air quality monitoring systems provide immediate, on-site data for analysis, compliance, and decision-making.
Monitor common gases, weather parameters, particulates.
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/
1. There have been over
fifty classification
schemes proposed for
sandstone. Most of
those currently in use
involve a ternary QFL
(quartz, feldspar, lithic)
plot for framework
grains and a major
division based on the
relative amount of
matrix.
Classification of Sandstone
2. Dott Classification
Because of its simplicity and added detail, I prefer this version (with
some modification of terminology) of the Dott classification.
3. Point Counting
Sandstone composition is typically determined microscopically by
identifying mineral composition at 300 equally spaced points
across a thin-section.
4. Total Rock Composition
Component Proportion
(%)
Quartz 78
Feldspar 60
Rock fragments 36
Matrix 126
Total: 300
Total Q, F, and L: 174
Framework Grain Composition
Component Proportion
(%)
Quartz (78/174) 45
Feldspar (60/174) 34
Lithic (36/174) 21
Total: 100
Sample Point Count
Composition at 300 points is identified. The relative abundance of
framework grains to matrix determines whether the rock is an arenite, a
wacke, or a mudstone. The framework composition is normalized to
determine the type (quartz, feldspathic, lithic) of arenite or wacke.
5. Ternary Diagrams
The normalized framework percentages are plotted on ternary diagrams
to determine rock composition.
This sample plots as
lithofeldspathic. Because of its
high matrix content, it would
be a lithofeldspathic wacke or
lithic arkose wacke.
6. Quartz
Monocrystalline
Polycrystalline
Quartz grains occur in three forms, monocrystalline (igneous source),
polycrystalline (metamorphic source) and chert (sedimentary source).
Some workers consider chert to be a lithic fragment.
Chert
7. Feldspars
Orthoclase crystal undergoing dissolution
Feldspar grains occur in four forms, orthoclase, plagioclase,
microcline, and sanidine and repesent a variety of igneous and
metamorphic sources. Feldspar rapidly alters to clay (kaolinite,
sericite) and calcite and is highly subject to dissolution.
Plagioclase altering to calcite
Dissolution along cleavage planes
8. Lithic Grains
Volcanic Rock Fragment
Chert Plutonic Rock Fragment
Metamorphic Rock
Fragment
Sedimentary Rock
Fragment (shale)
Lithic fragments are grains
that are recognizable as
particles of pre-existing
rocks and are classified as
igneous, sedimentary, or
metamorphic. Some
workers consider plutonic
and gneissic rock fragments
to be feldspar grains.
9. Provenance of Sandstone
(framework grains)
Influence of Source Rock Influence of Climate
The primary control on sandstone composition is the source rock.
However, climate and transport distance also have significant impacts.
10. Provenance of Accessory Minerals in Sandstones
Igneous Metamorphic Ig/Mc mixed
Aegerine Actinolite Biotite
Augite Andalusite Enstatite
Chromite Chloritoid Hornblende
Ilmenite Cordierite Hypersthene
Muscovite Diopside Magnetite
Topaz Epidote Sphene
Garnet Tourmaline
Sedimentary Glaucophane Zircon
Calcite Kyanite
Chert Rutile
Sillimanite
Staurolite
Tremolite
Accessory minerals
typically have a much
more restricted range of
formation than quartz
or feldspar; therefore,
even minor occurrences
can be very useful in
determining the
sediment source.
Provenance of Sandstone (accessory
[mostly heavy] minerals)
11. Matrix
The matrix portion of sandstone consists of mud-size particles,
particularly of clay and mica in composition, though quartz and
feldspar can play a significant role.
12. Cement
Common cements:
• Quartz
• Calcite
• Dolomite
• Siderite
• Hematite
• Limonite
• Mn oxides
• Pyrite
• Gypsum
• Barite
Cement is a diagenetic precipitate formed mostly during burial and
reflects changes in temperature, pressure, and ion concentration.
Quartz sandstone with calcite, silica, and pyrite cements
13. Quartz Arenite
• At least 95% quartz
• Most common along passive continental margins and in
epicontinental seas
• Often found in eolian, beach, and shelf depositional systems
• Are typically well-cemented and texturally mature to supermature
• Usually represent multiple recycling events (polycyclic)
• Can be first generation if the result of intense weathering
14. Feldspathic Arenite/Wacke (arkose)
• At least 25% feldspar (any type)
• Arenites have less than and wackes more than 15% matrix
• Most common in proximity to granitic source terranes, particularly
those in arid or cold climatic regions or humid regions with high relief
• Often found in alluvial fan depositional systems
• Are typically immature to sub-mature texturally
• Usually from first generation sediment
15. Lithic Wacke (greywacke)
• At least 25% lithic framework grains
• At least 15% matrix
• Most common in proximity to volcanic source terranes,
particularly those in arid or cold climatic regions or humid regions
with high relief
• Often found in alluvial fan depositional systems
• Almost always immature to sub-mature texturally
• Nearly always from first generation sediment
16. Glauconitic Sandstone
Glauconite is an iron-rich clay mineral related to illite that forms on
marine shelves under mildly reducing conditions and very slow
sedimentation rates prior to burial, often coating the surfaces of shells,
fecal pellets, and sedimentary (clastic and carbonate) particles.
Deposits are often some times referred to as “green sands.”
17. Phosphatic Sandstone
Phosphate nodules and cements develop through dissolution of
organic materials, such as bones and teeth, under conditions of low
pH. Phosphate is commonly found in association with glauconite.
18. Porosity
Porosity is a measure of the open space within a rock and can be either
primary (intergranular) or secondary (dissolution) in nature.
Primary Porosity Secondary porosity
19. Porosity and Grain Size
Grain size and sorting significantly affect the primary porosity of sand.