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. She is a member of the U.S. Advisory Committee for Scientific Ocean Drilling (USAC). Her teaching assignments include Stratigraphy, Advanced Marine Geology, Glacial Geology and a variety of introductory courses in Earth and Environmental Sciences.
Sedimentary Geology; Ocean Drilling; Paleoclimatology; Continental Margins; Polar Science; Glacial Processes; Seafloor Processes. I run the Sedimentology Laboratory, now located in CELS 305G.
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Expedition Objective Research: Early Pliocene Record Of Antarctic Ice Rafting And Paleoenvironmental Conditions, Wilkes Land Margin, Antarctica
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 Expedition 318 to the Wilkes Land margin of Antarctica. This portion of Antarctica carries the Wilkes and Aurora subglacial basins, where the East Antarctic Ice Sheet (EAIS) is grounded below sea level, and is potentially unstable. Funding: Consortium for Ocean Leadership and National Science Foundation
The Stratigraphic Expression of the Onset of Glaciation in Eocene-Oligocene Successions on the Antarctic Continental Margin
This project will investigate 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. The PI, one graduate and two undergraduate students will study the lithostratigraphy and weathering history of cores in the five drillholes, to establish a unique Eocene-Oligocene transition record within Antarctic continental margin sediments of glacial advance and retreat cycles, the onset of physical weathering, and glacio-isostasy and self-gravitation processes with implications for the margin architecture, sediment routing, and off-shore sediment dispersal. Cores from the five drillholes will be re-examined through detailed core description, detailed laser particle size and bulk major element geochemistry via ICP-AES. Phases of major ice growth will be recognized as marker beds of physically eroded sediment and will be correlated to isotopic records documenting Antarctic ice growth offshore in the Southern Ocean. Funded by the National Science Foundation.