My current research interests are mostly in isotope geochemistry, metamorphic petrology, and Precambrian geochronology. Ongoing projects aimed at deciphering isotopic and chemical records of Precambrian thermotectonism and ore mineralization are based in the Wyoming Province (South Dakota and Montana) and in the Adirondack Lowlands (New York). Another ongoing project focuses on modeling the crystal-chemical controls on argon retention and closure temperatures in amphiboles and micas.
Yousafzai, Asim; Eckstein, Yoram; Dahl, P.S. Hydrochemical signatures of deep groundwater circulation in a part of the Himalayan foreland basin. Environmental Earth Sciences Vol. 59, no. 5. Berlin : Springer, Jan. 2010
Frei, R., Dahl, P.S., and others, 2008, Trace element and isotopic characterization of Neoarchean and Paleoproterozoic iron formations in the Black Hills (SD, USA): Assessment of chemical change …rise of atmospheric oxygen: Precambrian Research, v. 162
Dahl, P.S., and others, 2005, Electron probe (Ultrachron) microchronometry of metamorphic monazite: Unraveling the timing of polyphase deformation in the eastern Wyoming craton (Black Hills, SD): American Mineralogist, v. 90, p. 1712-1728
McCombs, J.A., Dahl, P.S., and Hamilton, M.A., 2004, U-Pb ages of Neoarchean granitoids from the Black Hills, South Dakota, USA: Implications for evolution of the Archean Wyoming province: Precambrian Research, v. 130, p. 161-184
Roberts, H.J., Dahl, P.S., Kelley, S.P., and Frei, R., 2002, New 207Pb-206Pb and 40Ar-39Ar ages from SW Montana, USA: Constraints on the Proterozoic and Archean tectonic and depositional history of the Wyoming Province: Precambrian Research, v. 117
American Geophysical Union, Geological Society of America, Mineralogical Society of America, Northern Ohio Geological Society, Sigma Xi