Baylor > Department of Geology > People > Faculty & Staff > Dr. Steve Dworkin

Dr. Steve Dworkin



Contact information
Dr. Steve Dworkin
Department of Geology
Baylor University
One Bear Place #97354
Waco TX 76798

Phone (254) 710-2186
Fax (254) 710-2673

Room C425, Baylor Sciences Building

Steve_Dworkin@baylor.edu

Dworkin


Professor

• Aqueous Geochemistry
• Isotopic Geochemsistry
• Sedimentary Petrology

Education

Ph.D., University of Texas - Austin, 1991
M. S., Michigan State University, 1983
B. A., Albion College, 1981

General Information

My interests revolve around using geochemistry to investigate near surface processes. I have recently been working on projects involving climate reconstructions, nutrient pollution, the impact of dust on water chemistry, and fluid flow through thrust faults.

Selected Projects

1) Using the oxygen isotopic composition of pedogenic carbonates to calculate ancient Earth temperatures.

Dworkin Chart 1

Relationship between the oxygen isotopic composition of soil calcite and the mean annual temperature.



Dworkin Pic 2

Radial fibrous texture of West Texas pedognenic carbonate nodule.


2) Nutrient pollution in the Lake Waco drainage basin.
Dworkin Chart 2-3

Nitrate isochems overlain upon land use (rowcrops are shaded).


3) The impact of dust on water chemisty.

Dworkin Dust Catcher

The Baylor Geology dust collector sits in a lonely pasture performing its duty. Weathering of dust dominates the water chemistry of central Texas!

Courses

Isotope Geochemistry
Aqueous Geochemistry
Mineralogy
Earthquakes and Natural Disasters

Selected Publications

Dworkin, S.I., Nordt, L.C ., and Atchley, S.C., 2005, Determining terrestrial paleotemperatures using the oxygen isotopic composition of pedogenic carbonates, Earth and Planetary Science Letters, v. 237 p. 56-68.

Dworkin, S.I., 2005, Origin of radiogenic Sr in surface waters in of central Texas, Geochimica et Cosmochimica Acta, Goldschmidt Conference Abstracts, p. A603.

Monaghan, G.W., Hayes, D.R., Dworkin, S.I., and Voigt, E., 2004, Geoarchaeology of the Brook Run site (44CU122): an Early Archaic jasper quarry in Virginia, USA: Journal of Archaeological Sciences, v. 31, p. 1083-1092.

Atchley, S.C., Nordt, L.C., and Dworkin S.I., 2004, Eustatic control on alluvial sequence stratigraphy: The K/T transition in west Texas, USA: Journal of Sedimentary Petrology, 21 pages.

Nordt, L.C., Atchley, S.C., and Dworkin, S.I., 2003, Terrestrial evidence for two intense greenhouse events in latest Cretaceous time: GSA Today, p. 4-9.

Dworkin, S.I., 2003, The hydrogeochemistry of the Lake Waco drainage basin, Texas: Environmental Geology, v. 45, p. 106-114.

Nordt, L., Atchley, S., Dworkin, S.I., 2002, Paleosol barometer indicates extreme fluctuations in atmospheric CO2 across the Cretaceous-Tertiary boundary: Geology, v. 30, p. 703-706.

Dworkin, S.I., 1999, Geochemical Constraints on the Origin of Thrust Fault Fluids, Geophysical Research Letters, vol. 26, p. 3665-3668.

Dworkin
Gathering thrust fault gouge from the Ogden Thrust in Utah