This lecture note explains the use Trace Element Geochemistry to
understand the origin and evolution of igneous rocks. The approach is to discuss
the parameters that control partitioning of trace elements between phases and to
develop models for the partitioning of trace elements between phases in igneous
systems, especially between minerals and melt. Beginnings of geochemistry,
Thermodynamic consideration of TE solid solutions, Partition coefficient, Ionic
model for bonding, Nomenclature for trace element classification, Determination
of partition coefficients, Trace element abundance variations in simple
melt-solid systems, Fractional crystallization, Fractional melting, Complex
melting models, Constraints on melt models arising from disequilibrium in the Th-U
decay system, Ion exchange chromatography.
The central objective of
this lecture in a deeper understanding of mantle interaction. Topics include:
history of ocean basins, formation of MORBs and OIB's, mantle geochemistry,
mantle heterogeneity; slab recycling, mantle models.
This note explains the
following topics: acid or base and electrochemical concepts, aqueous
geochemistry and solid-water interactions with an emphasis on ground water,
chemical weathering, mineral thermodynamics and redox (Eh-pH) diagrams and their
applications to soil and mineral stability and ground water chemistry, modeling,
environmental geochemistry and isotopes applied to groundwaters.
This note looks at the oceans and is
an introduction to marine chemistry. The sub-topics of this lecture includes:
ocean dynamic topography, ocean temperature and salinity; oceanic circulation;
thermohaline circulation, carbon cycle, composition of sea water; variations of
sea water through time, hot vents and cold seeps, ferromanganese nodules, gas
hydrates, radiogenic isotopes in the oceans, U-disequilibrium dating and
sedimentation rates.
This book
brings together the knowledge from a variety of topics within the field of
geochemistry. The audience for this book consists of a multitude of scientists
such as physicists, geologists, technologists, petroleum engineers,
volcanologists, geochemists and government agencies. The topics represented
facilitate as establishing a starting point for new ideas and further
contributions.
This note describes the following topics:
Physics of the Nucleus and Radioactive Decay, Nucleosynthesis, Geochronology,
Radiogenic Isotope Geochemistry, Cosmogenic Isotopes in Geochronology, Fission
Track Dating, Isotope Cosmochemistry, Stable Isotope Geochemistry.
This course note introduces students to the basic concepts of
Medical Geology/Geochemistry. Medical Geology or Geochemistry is the study of the
interaction between abundances of elements and isotopes and the health of humans
and plants. Topics covered includes: Classification of Elements, Elemental Link
Between Geosphere and Biosphere, Essential and Non-essential Elements with
Reference to Human Health, Selection of Elements for Report and
Presentation,NORM (Naturally Occurring Radioactive Material), TENORM, MIT-EAPS
Neutron Activation Analysis Laboratory - Hands on Experience and Dust Storms.