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Geochemistry at FSU
RESEARCH AREAS
Geochemistry at FSU includes several very diverse fields of research. Both stable and radioactive isotopes (such as carbon, oxygen and
uranium-series isotopes) are used to study problems associated with Global Change, paleoceanography, paleoclimate, hydrology, and environmental
geology. Solid-Earth geochemists pursue an understanding of igneous processes and the long-term evolution of the Earth via isotopic and
geochemical tracer studies. Our low-temperature geochemistry group studies the paleoclimate in terrestrial environment, and also the
effects of natural and anthropogenic disturbances on biogeochemical processes and the carbon cycle. Our geochronology program addresses the
dating of very recent to very ancient geological events via the application of a large range of geochronological techniques.
FACILITIES
The newest departmental facility is the Isotope Geochemistry Laboratory, located at
the National High Magnetic Field Laboratory. This laboratory includes an 800 sq. foot ultra-clean chemistry laboratory,
supporting wet labs and mineral preparation equipment, a Finnigan MAT 262RPQ solid-source mass spectrometer used for the measurement
of Sr, Nd, Pb, Hf, Os, U, and Th isotope ratios and associated element concentrations, a high-abundance-sensitivity, multi-collector
ion probe used to measure Th and Hf isotope ratios in limited amounts of material via secondary ion mass spectrometry, and a Finnigan
Element ICP-MS used to measure elemental concentrations in rock, soil, and water samples. It also has a light isotope
laboratory (http://www???, [find URL for lab] which has two vacuum lines and a new Finnigan MAT Delta Plus XP stable isotope ratio
mass spectrometer with various peripheral instruments -for carbon, oxygen, nitrogen and hydrogen isotopic analyses of various types of
samples. The department also operates a modern alpha and gamma counting facility that is used to measure the short-lived daughter products
of U and Th. Other facilities include ESR, AA, and UV-VIS spectrophotometers, and all standard rock and sample preparation equipment.
Advanced computing facilities are available through the School of Computational Science and Information Technology, and advanced materials
characterization techniques are available through departmental cooperation with MARTECH, FSU's Center for Materials Research Technology.
LINKS
National High Magnetic Field Laboratory
FACULTY
Joseph F. Donoghue
Geology of coastal environments and continental margins; causes and
effects of sea-level change; Quaternary geology and geochronology;
environmental geology; contaminants in sediments.
Xiaolong (Bill) Hu
Groundwater modeling, solute transport in Yucca Mountain project area, non-darcy's flow in karst media.
Munir Humayun
Cosmochemistry: formation of the solar system; chemical and isotopic studies of spacecraft returned samples,
meteorites and lunar samples. Geochemistry of siderophile elements; geochemical interaction between core and mantle; cosmic bombardment
history of the Earth and planets; Early differentiation of the Earth and planets.
Stephen A. Kish
Igneous and metamorphic petrology applied to the study of ore deposits; igneous petrology studies in the
Appalachians and southern Rocky Mountain regions; use of isotopes in geochronological and geochemical studies.
Leroy Odom
Isotope geochemistry, isotopic tracers for geologic processes, electron spin resonance dosimetry and thermometry.
Vincent Salters
Investigations of mantle evolution and MORB magma generation using isotopic tracers. Lu-Hf isotopic systematics and
the evolution of the continental crust.
Yang Wang
Application of stable isotopes and other geochemical techniques to understand climatic, environmental, biological,
and hydrologic processes.
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