Jean M. Self-Trail

Jean joined the USGS in 1986 and has spent the last four years perfecting her knowledge of Mesozoic and Cenozoic calcareous nannofossils. She specializes in biostratigraphic and paleoceanographic studies of the Gulf and Atlantic Coastal Plains of the United States, using her findings to help determine the applicability of using Mesozoic calcareous nannofossils as biostratigraphic marker species on a worldwide basis. Jean has been involved in cooperative studies with various universities and State Geological Surveys in NJ, DE, MD, VA, NC, SC, GA, FL, MO, AL, TX, and NE, and has been involved in studies with research institutions in Pakistan, India, and Europe. She is currently participating in research activities with the Ocean Drilling Program in the North Atlantic Ocean and is, in cooperation with the USGS Climate History Program, studying Pleistocene calcareous nannofossil production in the Arctic Ocean. She uses calcareous nannofossils to give extremely accurate and detailed data useful in interpreting the stratigraphy, sequence stratigraphy, geochronology, paleoceanography, and regional geology of an area. This data often results in the production of both subsurface and surface geologic maps.

Current Projects

Previous Projects

1990-1995. Early Cenozoic Biostratigraphy and Basin Analysis, Atlantic and Eastern Gulf Coastal Plains. Project Chief: T. Gibson.
1992-1995. Savannah River Project. Project Chief: L. Edwards.
1989-1993. Paleocene-Eocene Biostratigraphy of Pakistan and Paleontological Development of the Geological Survey of Pakistan. Project Chief: B. Wardlaw.
1986-1990. New Jersey COGEOMAP. Project Chiefs: J. Owens and N. Sohl.
1986-1990. Paleocene-Eocene Boundary Project. Project Chief: T. Gibson.

Significant Products


Work in Progress

Bybell, L.M., and Self-Trail, J.M., in press
Calcareous nannofossils from Paleogene deposits in the Salt Range, Pakistan.
Christopher, R.A., Self-Trail, J.M., Prowell, D.C., and Gohn, G.S., in preparation
Sohlipollis gen. nov. (Palynomorph): a guide fossil for the Middle Turonian through Santonian stages (Upper Cretaceous) in the Coastal Plain Province: South Carolina Geology.
Gohn, G. S., and Self-Trail, J.M., in press
Biostratigraphy and regional correlation of the Cretaceous marine section in the U.S. Geological Survey Millhaven No. 1 core, Screven County, Georgia, U.S. Geological Survey Professional Paper.
Norris, R., Huber, B., and Self-Trail, J. M., in preparation
Survivorship of planktonic foraminifera through the K-T mass extinction: ODP Leg 171B, Western North Atlantic: Geology.
Self-Trail, J.M., in preparation
Some new and rarely documented Late Cretaceous calcareous nannofossils from subsurface sediments in South Carolina: Journal of Paleontology.
Self-Trail, J.M., in preparation
Using holococcolith abundances and sequence biostratigraphy to determine nearshore calcareous nannofossil affinities: Paleoceanography.
Self-Trail, J.M., and Gohn, G.S., in preparation
Biostratigraphic and sequence stratigraphic framework of Upper Maastrichtian sediments from the South Carolina Coastal Plain: Geological Society of America Bulletin.

To Contact

U.S. Geological Survey
926A National Center
Reston, VA 20192
FAX: (703) 648-6953

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