Sandra Passchier is a Professor in the Department of Earth and Environmental Studies at Montclair State University, and Graduate Program Coordinator for the M.S. in Earth and Environmental Science. She has studied sedimentary records of polar ice sheet dynamics since 1992 in collaborative research efforts involving expeditions to the Arctic and the Antarctic, of which six as a science team member in international scientific drilling programs. Her teaching assignments include Stratigraphy, Advanced Marine Geology, Glacial Deposits and a variety of introductory courses in Earth and Environmental Sciences.
Selected Recent Publications (see CV for full publication list, *advisees):
Passchier, S., *Ciarletta, D., *Miriagos, T., Bijl, P., Bohaty, S., 2017. An Antarctic stratigraphic record of step-wise ice growth through the Eocene-Oligocene Transition. Geological Society of America Bulletin, Vol. 129, doi: 10.1130/B31482.1.
*Hansen, M.A. and Passchier, S., 2016. Oceanic circulation changes during early Pliocene marine ice-sheet instability in Wilkes Land, East Antarctica. Geo-Mar Lett., doi:10.1007/s00367-016-0489-8
*Hansen, M. A., Passchier, S. Khim, B.-K., Song, B., and Williams, T., 2015. Threshold behavior of a marine-based sector of the East Antarctic Ice Sheet in response to early Pliocene ocean warming, Paleoceanography, 30, doi:10.1002/2014PA002704.
*Orejola, N., Passchier, S., and IODP Expedition 318 Scientists, 2014. Sedimentology of lower Pliocene to Upper Pleistocene diamictons from IODP Site U1358, Wilkes Land margin, and implications for East Antarctic Ice Sheet dynamics. Antarctic Science, doi:10.1017/S0954102013000527.
Passchier, S., Bohaty, S.M., Jiménez-Espejo, F., Pross, J., Röhl, U., van de Flierdt, T., Escutia, C., Brinkhuis, H., 2013. Early Eocene – to – middle Miocene cooling and aridification of East Antarctica. Geochemistry, Geophysics, Geosystems, 14 (5), 1399-1410, doi:10.1002/ggge.20106. (Research Highlight in Nature Geoscience, June 2013).
Stocchi, P., Escutia, C., Houben, A.J.P., Vermeersen, B.L.A., Bijl, P.K., Brinkhuis, H., DeConto, R.M., Galeotti, S., Passchier, S., Pollard, D., and IODP Expedition 318 scientists, 2013. Relative sea level rise around East Antarctica during Oligocene glaciation. Nature Geoscience, online April 21, doi:10.1038/ngeo1783.
Houben, A.J.P., Bijl, P.K., Pross, J., Bohaty, S.M., Passchier, S., Stickley, C.E., Röhl, U., Sugisaki, S., Tauxe, T., van de Flierdt, T., Olney, M., Sangiorgi, F., Sluijs, A., Escutia, C., Brinkhuis, H., and the Expedition 318 Scientists, 2013. Reorganization of Southern Ocean plankton ecosystem at the onset of Antarctic glaciation. Science, 340, no. 6130, p. 341-344, doi: 10.1126/science.1223646
Sedimentary Geology; Ocean Drilling; Paleoclimatology; Continental Margins; Polar Science; Glacial Processes; Seafloor Processes. I run the Sedimentology Laboratory, now located in CELS 305G.
This project investigates glacial advance and retreat of the East Antarctic Ice Sheet through the Eocene-Oligocene transition, a major episode of ice growth. In Prydz Bay, East Antarctica, a 130-170 m thick Eocene-Oligocene transition interval of glaciomarine sediments was cored in drillholes of the Ocean Drilling Program at Sites 739, 742 and 1166. Recent drilling on the Wilkes Land margin of East Antarctica recovered earliest Oligocene sediments overlying a major regional unconformity in two drillholes. We are also working on Site 696 in the Weddell Sea. Cores from the six drillholes are re-examined through detailed core description, detailed laser particle size and bulk major element geochemistry via ICP-AES and ICP-MS. Phases of major ice growth are recognized as marker beds of physically eroded sediment and are correlated to isotopic records documenting Antarctic ice growth offshore in the Southern Ocean. Funded by the National Science Foundation.
The Pliocene was the last epoch wherein the atmospheric pCO2 was similar to today's partial pressure and global surface temperatures were higher than the modern with a larger than average degree of warming occurring at high latitudes. This project investigates early Pliocene East Antarctic ice dynamics and paleoenvironmental conditions from variations in the production of ice-rafted debris and major element geochemistry of sediment cores collected during IODP Expeditions.