Crustal Imaging and Characterization Team
USGS 40Ar/39Ar Geochronology Laboratory
| Lawrence W. Snee |
| Phone: 303-236-5619 |
| Fax: 303-236-5556 |
| Email: lsnee@usgs.gov |
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Experience
Research Geologist with more than 30 years experience in field geology, petrology, geochemistry, isotope geology, structural geology, tectonics, economic geology, geology of world gemstone deposits, and management. More than 300 peer-reviewed research articles, maps, books, and abstracts covering geologic research throughout the world. Many presentations to professional societies and groups. Supervised many geology and geochemistry graduate students. Currently conducting field and laboratory studies in Texas, Montana, Alaska, California; Australian Research Council-funded collaborative research on gold deposits in Australia, and US Agency for International Development-funded reconstruction work for the US Geological Survey on geologic mapping and mineral resources, including gemstone deposits in Afghanistan.
Current Activities
Lindsay, C.R., Snee, L.W., Bohannon, R.G., Wahl, R.,Sawyer, D., Geologic Map of Quadrangle 3568, Pulkhumri (503) and Charaikar (504) Quadrangles, Afghanistan: U.S. Geological Survey Open-File Report 2005-xxxx.
Lindsay, C.R., Snee, L.W., Bohannon, R.G., Wahl, R., Sawyer, D., Geologic Map of Quadrangle 3570, Tagab-Munjan (505) and Samar-Kamdes (506) Quadrangles, Afghanistan: U.S. Geological Survey Open-File Report 2005-xxxx.
duBray, E.A., and Snee, L.W., Composition, age and petrogeneisis of Late Cretaceous intrusive rocks in the central Big Belt Mountains, Broadwater and Meagher counties, Montana: U.S. Geological Survey Professional Paper, 46 ms p., 18 figures, 11 tables.
Snee, L.W., Davidson, G.F., and Unruh, D.M., Geologic, geochemical and 40Ar/39Ar and U-Pb thermo- chronologic constraints for the tectonic development of the Salmon River suture zone near Orofino, Idaho: in Kuntz, M., ed., Geology of the Salmon River suture zone, U.S. Geological Survey Professional paper, 66 ms pages, 17 figures, and 5 tables.
Harlan, S.S., Snee, L.W., Reynolds, M.W., Mehnert, H.H., Schmidt, R.G., Sheriff, S.D., and Irving, A.J., 2005, 40Ar/39Ar and K-Ar geochronology and tectonic significance of the Upper Cretaceous Adel Mountain Volcanics and spatially associated Tertiary igneous rocks, northwestern Montana: US Geological Survey Professional Paper 1696.
Juliani, C., Rye, R.O., Nunes, C.M.D., Snee, L.W., Correa Silva, R.H., Monteiro, Lena V.S., Bettencourt, J.S., Neumann, R., and Neto, A.A., 2005, Paleoproterozoic high-sulfidation mineralization in the Tapajos gold province, Amazonian Craton, Brazil: geology, mineralogy, alunite argon age, and stable-isotope constraints, Chemical Geology, v. 215, p. 94-125.
Landis, G.P., Snee, L.W., and Juliani, C., 2005, Evaluation of argon ages and integrity of fluid-inclusion compositions: stepwise noble gas heating experiments on 1.87 Ga alunite from Tapajos Province, Brazil, Chemical Geology, v. 215, p. 127-153.
duBray, E.A., Snee, L.W., and Pallister, J.S., 2004, Geochemistry and geochronology of Middle Tertiary volcanic rocks of the central Chiricahua Mountains, southeast Arizona: U.S. Geological Survey Professional Paper 1684, 45 p.
Kellogg, K.S., Snee, L.W., and Unruh, D.M., 2003, The Mesoproterozoic Beaverhead impact structure and its tectonic setting, Montana-Idaho: 40Ar/39Ar and U-Pb isotopic constraints, The Journal of Geology, v. 111, p. 639-652.
Roeske, S.M., Snee, L.W., and Pavlis, T., 2003, Dextral slip reactivation of an arc-forearc boundary, southern Alaska: in Pavlis, T., and Sisson, V., (eds.), Studies along the Border Ranges Fault System, Alaska, Geological Society of America Special Paper 371, p. 141-169.
Hart, C., Qiu, Y., Goldfarb, R., Snee, L.W., Miller, L., Miller, M., and Nie, F.-J., 2002, Multiple gold mineralizing events in the northern margin of the North China craton: Ar geochronology and fluid chemistry, Mineralium Deposita, v. 37, p. 326-351.
Miggins, D.P., Thompson, R.A., Pillmore, C.L., Snee, L.W., and Stern, C.R., New constraints on the opening of the northern Rio Grande rift: evidence from 40Ar/39Ar geochronology from the Sangre de Cristo Mountains, south-central Colorado and northern New Mexico: in Menzies, M., and others (eds.), Volcanic rifted margins, Geological Society of America Special Paper 362, p. 47-64.
Snee, L.W., 2002, Argon termochronology of mineral deposits - A review of analytical methods, formulations, and selected applications: U.S. Geological Survey Bulletin 2194, 39 p., http://pubs.usgs.gov/bul/b2194/ .
Snee, L.W., 2001, Review of "Dictionary of Gems and Gemology" by Manutchehr-Danai, Mineralium Deposita, v. 36, no. 5, p. 472.
Wells, M.L., Snee, L.W., and Blythe, A.E., 2000, Dating of major fault systems using thermochronology: an example from the Raft River detachment, Basin and Range, western United States, Journal of Geophysical Research, v. 105, p. 16, 303-16, 327.
Hofstra, A.H., Snee, L.W., Rye, R.O., Folger, H.W., Phinsey, J.D., Loranger, R.J., Dahl, A.R., Naeser, C.W., Stein, H.J., and Lewchuk, M., 1999, Age constraints on Jerritt Canyon and other Carlin-type gold deposits in the western United States, Economic Geology, v. 94, p. 769-802.
Shaw, C.A., Snee, L.W., Selverstone, J., and Reed, J.C., Jr., 1999, 40Ar/39Ar thermochronology of Mesoproterozoic metamorphism in the Colorado Front Range, Journal of Geology, v. 107, p. 49-67.
Laurs, B.M., Dilles, J.H., Snee, L.W., 1996, Emerald mineralization and metasomatism of amphibolite, Khaltaro granitic pegmatite - hydrotheral vein system, Haramosh Mountains, northern Pakistan, Canadian Journal of Earth Sciences, v. 34, p. 1253-1286.
Snee, L.W., Lund, K., Sutter, J.F., Balcer, D.E., and Evans, K.V., 1995, An 40/39Ar chronicle of the tectonic development of the Salmon River suture zone, western Idaho: in Vallier, T.L., and Brooks, H.C., eds., Geology of the Blue Mountains Region of Oregon, Idaho, and Washington; petrology and tectonic evolution of pre-Tertiary rocks of the Blue Mountains region, U.S. Geological Survey Professional Paper 1438, p. 359-414.
Till, A.B., Snee, L.W., 1995, 40Ar/39Ar evidence that formation of blueschists in continental crust was synchronous with foreland fold and thrust deformation, western Brooks Range, Alaska, Journal of Metamorphic Geology, v. 13, p. 41-60.
LaFortune, J.R., Snee, L.W., and Baig, M.S., 1992, Geology and geochemistry of Indian plate rocks south of the Indus Suture Zone, Besham area, northwest Himalaya Pakistan, Kashmir Journal of Geology, v. 10, p. 27-52.
Landis, G.P., Snee, L.W., 1992, 40Ar/39Ar systematics and argon diffusion in amber: implications for ancient earth atmospheres, Paleogeography, Paleoclimatology, Paleoecology (Global and Planetary Change Section), v. 97, p. 63-67.
Goldfarb, R.J., Snee, L.W., Miller, L.D., and Newberry, R.J., 1991, Rapid dewatering of the crust deduced from ages of mesothermal gold deposits, nature, v. 354, p. 296-298.
Snee, L.W., 1991, Review of "Gemstones of Pakistan - Geology and Gemology", Gemology, v. 27, p. 193.
Izett, G.A., Dalrymple, G.B., and Snee, L.W., 1991, 40Ar/39Ar age of Cretaceous-Tertiary boundary tektites from Haiti, Science v. 252. p. 1539-1542.
Bowersox, G., Snee, L.W., Foord, E.E., and Seal, R.R., 1991, Emeralds of the Panjshir Valley, Afghanistan, Gems and Gemology, v. 27, p. 26-39.
Baig, M.S., and Snee, L.W., 1991, A discovery of Late Archean to Early Proterozoic komatiite from the northwestern margin of the Indian plate, Besham area, northwest Himalaya Pakistan, Kashmir Journal of Geology, v. 8 and 9, p. 19-23.
Snee, L.W., 1991, Emeralds of Pakistan and Afghanistan, Society of Economic Geologists Newsletter, n. 5, p. 20-22.
Kazmi, A.H., Snee, L.W., eds., 1989, Emeralds of Pakistan: Geology, Gemology, and Genesis, New York, Van Nostrand Reinhold, 269 p.
Snee, L.W., Foord, E.E., Hill, B., and Carter, S.J., 1989, Regional chemical differences among emeralds and host rocks of Pakistan and Afghanistan: implications for the origin of emerald, in Kazmi, A.H., and Snee, L.W., eds., Emeralds of Pakistan: Geology, Gemology, and Genesis: New York, Van Nostrand Reinhold, p. 93-124.
Lawrence, R.D., Kazmi, A.H., Snee, L.W., 1989, Geological setting of the emerald deposits: in Kazmi, A.H., and Snee, L.W., eds., Emeralds of Pakistan: Geology, Gemology, and Genesis: New York, Van Nostrand Reinhold, p. 13-38.
Snee, L.W., and Kazmi, A.H., 1989, Origin and classification of Pakistani and World emerald deposits, in Kazmi, A.H., and Snee, L.W., eds., Emeralds of Pakistan: Geology, Gemology, and Genesis: New York, Van Nostrand Reinhold, p. 229-238.
Kazmi, A.H., Snee, L.W., 1989, Geology of world emerald deposits: a brief review, in Kazmi, A.H. and Snee, L.W. eds., Emeralds of Pakistan: Geology, Gemology and Genesis: New York, Van Nostrand Reinhold, p. 165-228.
Baig, M.S., Snee, L.W., LaFortune, R.J., and Lawrence, R.D., 1989, Timing of pre-Himalayan orogenic events in the northwest Himalaya: 40Ar/39Ar constraints, Kashmir Journal of Geology, v. 6 and 7, p. 29-40.
Snee, L.W., Sutter, J.F., and Kelly, W.C., 1988, Thermochronology of economic mineral deposits: dating the stages of mineralization at Panasqueira, Portugal by high-precision 40Ar/39Ar age-spectrum techniques on muscovite, Economic Geology, v. 83, p. 335-354.
Lund, K., and Snee, L.W., 1988, Metamorphism, structural development, and age of the continent - island arc juncture in west-central Idaho, in Ernst, G., ed., Ruby Colloquium, no. VII, Metamorphism and crustal evolution in the western conterminous U.S., p. 296-331.
Berger, B.R., Snee, L.W., Hanna, W., and Benham, J.H., 1983, Mineral resource appraisal of the west Pioneers Wilderness Study Area (RARE II), Beaverhead County, Montana, U.S. Geological Survey Miscellaneous Field Studies Map MF-83-1576A, 21 p. and map.
Snee, L.W., 1982, Emplacement and cooling of the Pioneer batholith, southwestern Montana: Ohio State University, unpub. Ph.D. Thesis, 320 p.
Snee, L.W., 1978, Petrography, K-Ar ages, and field relations of the igneous rocks of part of the Pioneer batholith, southwestern Montana: Ohio State University, unpub. M.S. Thesis, 110 p.
Snee, L.W., and Ahrens, T.J., 1975, Shock-induced deformation features in terrestrial peridot and lunar dunite, Proceedings, Lunar Science Conference, 6th, p. 833-842.
Snee, L.W., and Cassidy, D.H., 1974, "List," a computer program for sediment sample inventory, Antarctic Journal of the U.S., IX(6), 322.
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Mineral Resources |
Eastern / Central / Western / Alaska / Minerals Information |
| Crustal Imaging & Characterization / Spatial Data |
U.S. Department of the Interior |
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