Sam Bowring's Radiogenic Isotope Lab at MIT

Research Interests: Calibrating the rates of biologic evolution. Constraining the early history of the earth. The use of U-Pb systematics in accessory minerals to understand the thermal history of orogenic belts. Investigating the isotopic composition of Pb, Sr, and U in natural waters, including the Sr isotopic composition of seawater over the last 40,000 years. The isotope geochemistry of Pb, Sr, and U in waters and soils to monitor the effects of acid rain. Understanding the development of early Proterozoic orogenic belts and the evolution of Archean greenstone belts.

Recent Publications
Bowring, S.A., and Schmitz, M.D. in press, High-precision U-Pb zircon geochronology and the statigraphic record: in Short Course Notes to Zircon: Experiments, Isotopes, and Trace-element Investigations. Reviews in Mineralogy and Geochemistry

Amthor J. E., Grotzinger, J. P., Schröder, S., Bowring, S. A, Ramezani, J. Martin, M. W. and Matter, A., 2003, Extinction of Cloudina and Namacalathus at the Precambrian-Cambrian Boundary in Oman: Geology, v. 31, no. 5, p. 431-434.

Schmitz, M.D., and Bowring S.A., 2003, Ultra-high temperature metamorphism in the lower crust during Neoarchean Ventersdorp rifting and magmatism, Kaapvaal Craton, southern Africa: Geological Society of America Bulletin, v. 115, p. 533-548.

Schmitz, M.D., and Bowring, S.A., 2003, Constraints on the thermal evolution of continental lithosphere from U-Pb accessory mineral thermochronology of lower crustal xenoliths, southern Africa: Contribution to Mineralogy and Petrology, v. 144, p. 592-618.

Baldwin, J.A., Bowring, S.A., and Williams, M.L., 2003, Petrological and geochronological constraints on high pressure, high temperature metamorphism in the Snowbird tectonic zone, Canada: Journal of Metamorphic Geology, v. 21, p. 81-88.


	Sam Bowring: Professor Ph.D. University of Kansas 1985 Phone: (617) 253-3775 Fax: (617) 253-6735 Email: sbowring@mit.edu Research Interests: Calibrating the rates of biologic evolution. Constraining the early history of the earth. The use of U-Pb systematics in accessory minerals to understand the thermal history of orogenic belts. Investigating the isotopic composition of Pb, Sr, and U in natural waters, including the Sr isotopic composition of seawater over the last 40,000 years. The isotope geochemistry of Pb, Sr, and U in waters and soils to monitor the effects of acid rain. Understanding the development of early Proterozoic orogenic belts and the evolution of Archean greenstone belts. Recent Publications Bowring, S.A., and Schmitz, M.D. in press, High-precision U-Pb zircon geochronology and the statigraphic record: in Short Course Notes to Zircon: Experiments, Isotopes, and Trace-element Investigations. Reviews in Mineralogy and Geochemistry Amthor J. E., Grotzinger, J. P., Schröder, S., Bowring, S. A, Ramezani, J. Martin, M. W. and Matter, A., 2003, Extinction of Cloudina and Namacalathus at the Precambrian-Cambrian Boundary in Oman: Geology, v. 31, no. 5, p. 431-434. Schmitz, M.D., and Bowring S.A., 2003, Ultra-high temperature metamorphism in the lower crust during Neoarchean Ventersdorp rifting and magmatism, Kaapvaal Craton, southern Africa: Geological Society of America Bulletin, v. 115, p. 533-548. Schmitz, M.D., and Bowring, S.A., 2003, Constraints on the thermal evolution of continental lithosphere from U-Pb accessory mineral thermochronology of lower crustal xenoliths, southern Africa: Contribution to Mineralogy and Petrology, v. 144, p. 592-618. Baldwin, J.A., Bowring, S.A., and Williams, M.L., 2003, Petrological and geochronological constraints on high pressure, high temperature metamorphism in the Snowbird tectonic zone, Canada: Journal of Metamorphic Geology, v. 21, p. 81-88.