Texas Tech University



Researchers in geochemistry in the Department of Geosciences is diverse and occurs across a spectrum of related disciplines. In the department you will find ongoing research in experimental aqueous geochemistry, the geochemical evolution of igneous and metamorphic systems, stable isotopic studies of vertebrate and invertebrate fossils, and the application of geochemical analysis to understanding of water-rock interactions in aquifers.

There are three broadly defined research groups in the department:

  • Aqueous and Environmental Geochemistry
  • Geochemistry of Crustal Processes
  • Stable Isotope Geochemistry



Dr. Callum Hetherington, mineralogy, geochemistry, and micro-analytical study of igneous and metamorphic rocks.

Dr. Juske Horita, stable isotope geochemistry.

Dr. Hal Karlsson, stable isotope geochemistry.

Dr. Moira Ridley, aqueous geochemistry.

Dr. Branimir Segvic, clay mineralogy and low-temperature geochemistry.

Dr. Paul Sylvester, mineral geochemistry, geochronology of sedimentary systems

Research Facilities

Courses In Geochemistry

  • GCH 3303 Introduction to Geochemistry
  • GCH 4308 Techniques and Applications in Mineral Sciences
  • GCH 5300 Individual Studies in Geochemistry
  • GCH 5308 Techniques and Applications in Mineral Sciences
  • GCH 5315 Sedimentary Provenance 
  • GCH 5350 Isotope Geochemistry
  • GCH 5360 Radiogenic Isotope Geochemistry 
  • GCH 5371 Analytical Methods in Laser Ablation ICPMS
  • GCH 5405 Inorganic Geochemistry