Home > Faculty/Staff > Franklin F. Foit, Jr.
Franklin F. Foit, Jr.
School of Earth and Environmental Sciences
|Room 1052, Webster Physical Sciences building|
Dr. Foit’s research interests are focused in three areas : tephrochronology
of the Pacific Northwest, the crystal chemistry of sulfosalts and
the tourmaline group of rock forming minerals and the shock effects on
minerals of large meteorite impact. Field and laboratory studies
of the age, distribution, and stratigraphy of tephras are useful in the
dating of archaeological sites, unraveling paleoclimatic events as recorded
in the sedimentary record and understanding the hazards posed by PNW volcanoes. The
principle tool used in these investigations is the electron microprobe
microanalyzer (EPMA). Much of this research is interdisciplinary
in nature and involves collaborations with archaeologists, forest
biologists, paleoclimatologists to name a few. He also uses
the EPMA to study the diverse elemental substitutions in the tetrahedrite
group of sulfosalts and the tourmaline group. Tetrahedrite group
minerals are a major source of Cu and Ag as well as a potential petrogenetic
indicators. With NASA support Foit in collaboration with M.
Pope and A.J. Watkinson and their student are examining quartz and carbonates
from a large impact structure using X-ray diffraction and microprobe analysis
to better understand and quantify the shock pressure regime they
were subjected to.
- GEOL 552: X-ray Analysis in Geology
- Sarah Huson
- Huson, S.A., Foit, Jr., F.F., Watkinson, A.J., and Pope, M. (2006) X-ray powder diffraction patterns and thin section observations from the Sierra Madera, impact structure, 37th Annual Lunar and Planetary Science Conference Houston, TX
- Kuehn, S. and Foit, Jr. F.F. (2006) Widespread Holocene
and Pleistocene Tephra Layers from Newberry Volcano, Oregon, Quaternary
International, 148(1), 113-137.
- Rosenberg, P.E. and Foit, Jr. F.F. (2006) Magnesiofoitite from the uranium deposits of the Athabasca Basin, Saskatchewan, Canada. Canadian Mineralogist, 44, 959-965.
- Martin, J.E., Patrick, D., Kihm, Foit, Jr., F.F. and A.J., Granstaff, D.E., (2005) Lithostratigraphy, geochronology, and rare earth element geochemistry of fossils from the classic Fossil Lake area, south central Oregon, J. of Geology, Journal of Geology, 113, 139-156.
- Foit, Jr., F.F., Gavin, D., and Hu, F.S. (2004) The tephra stratigraphy of two lakes in south-central British Columbia, Canada and its implications for mid-late Holocene volcanic activity at Glacier Peak, Washington, USA, Canadian Journal of Earth Sciences, 41, 1-10.
- Clague, J.J., Barendregt, R., Enkin, R.J., and Foit, Jr., F.F. (2003) Paleomagnetic and tephra evidence for tens of Missoula floods in southern Washington, Geology, 31, 247-250.
- Foit, Jr., F.F. and Hughes, J.M. (2003) Structural variations in mercurian tetrahedrite, American Mineralogist, 89, 159-163.
- Bandli, B.R., Gunter, M.E., Twamley, B., Foit, Jr., F.F., and Cornelius, S.B. (2003) Optical, compositional, morphological, and X-ray data on eleven particles of amphibole from Libby, Montana, U.S.A. Canadian Mineralogist, 41, 1277-1289.
- Gunter, M.E., Dyar, M.D., Twamley, B., Foit, F.F., Jr., and Cornelius, S.B. (2003)Composition, Fe3+/SFe, and crystal structure of non-asbestiform and asbestiform amphiboles from Libby, Montana, U.S.A. American Mineralogist, 88, 1970-1978.
- Toms, P.S., King, M.S., Zarate, M.A., Kemp, R.A., and Foit, Jr., F.F. (2004) Geochemical characterization, correlation and dating of tephra in alluvial sequences of western Argentina,Quaternary Research, 62, 60-75.
- Foit, Jr., F.F. and Ulbricht, M.E. (2001) Compositional variation in mercuriantetrahedrite-tennantite from the hydrothermal deposits of the Steens-and Pueblo Mountains, Harney County, Oregon. Canadian Mineralogist, 39, 819-830.
- Gaylord, D.R., Foit, Jr., F.F., Schatz, J.K., and Coleman, A,J. (2001) Smith Canyon dune field history and paleoclimate, Washington, U.S.A.: Relations to glacial outburst floods and the Mazama eruption, Journal of Arid Environments, 47, 403-424.
- Hallett, D. J., Mathews, R., and Foit, Jr., F.F. (2001) Mid-Holocene Glacier Peakand Mount St. Helens We tephras found in lake sediments from southern British Columbia, Canada using high resolution sampling, magnetic susceptibility, and electron microprobe analysis. Quaternary Research, 55, 284-292.
- King, M., Busacca, A.J., Foit, Jr., F.F., and Kemp, R.A. (2001) Identification ofthe Trego Hot Springs tephra in the Palouse, Washington State, U.S.A., Quaternary Research, 56, 165-169.