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.
This
note covers all aspects of molecular biosignatures, such as their pathways of
lipid biosynthesis, the distribution patterns of lipid biosynthetic pathways
with regard to phylogeny and physiology, isotopic contents, occurrence in modern
organisms and environments, diagenetic pathways, analytical techniques and the
occurrence of molecular fossils through the geological record.
Author(s): Prof.
Roger Summons, Dr. Florence Schubotz, Dr. Julio Sepulveda and Dr. Paula Welander
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. Major topics covered includes: Geochemical and
Sedimentation History of Neogene Lacustrine Sediments, Arsenic Geochemistry in
Groundwater System, Geochemistry of Hydrothermal Alteration in Volcanic Rocks,
Behaviors of Mantle Fluid During Mineralizing Processes and Potential and
Geochemical Characteristics of Geothermal Resources in Eastern Macedonia.