U.S. Geological Survey colleagues and friends on the ice at Ion Ice Rink following a Learn to Curl class in Leesburg, VA.
Winter 2026 Photo Contest Winner: Jean Self-Trail, Honorable Mention
An official website of the United States government
Here's how you know
Official websites use .gov
A .gov website belongs to an official government organization in the United States.
Secure .gov websites use HTTPS
A lock () or https:// means you’ve safely connected to the .gov website. Share sensitive information only on official, secure websites.
Jean M Self-Trail is a Research Geologist, USGS Florence Bascom Geoscience Center.
I conduct basic research on calcareous nannofossil biostratigraphy, paleoclimate, lithostratigraphy, and sequence stratigraphy. This work is focused primarily on the U.S. Atlantic Coastal Plain, for the purpose of understanding the geologic framework, the effect that changing climate had on shallow marine systems and coastal regions, and for characterizing strata that are major aquifers for water resources.
Ph.D. (2001) – Geology, University of Nebraska, Lincoln, NE.
M.S. (1994) – Geology, University of Delaware, Newark, DE.
B.S. (1988) – Geology, George Mason University, Fairfax, VA.
Geological Society of America (GSA)
International Nannoplankton Association (INA)
Paleontological Society of Washington (PSW)
2014 Superior Service Award (for work on PETM and Eocene hyperthermals), USGS.
2012 Adjunct Faculty of the Year (nominated), Northern Virginia Community College.
1993 Best Teaching Assistant, Department of Geology, University of Delaware.
1991 Department Scholarship, Department of Geology, University of Delaware.
1991 Women in Sciences Award, College of Arts and Sciences, University of Delaware.
U.S. Geological Survey colleagues and friends on the ice at Ion Ice Rink following a Learn to Curl class in Leesburg, VA.
Winter 2026 Photo Contest Winner: Jean Self-Trail, Honorable Mention
U.S. Geological Survey colleagues and friends on the ice at Ion Ice Rink following a Learn to Curl class in Leesburg, VA.
Winter 2026 Photo Contest Winner: Jean Self-Trail, Honorable Mention
Map showing the location of the study area in Maryland and Virginia. Each dot represents an outcrop (red), core (black) or water well (orange) where Paleogene formation thicknesses were obtained. The circular feature in the southern portion of the map is the Chesapeake Bay Impact Crater. Paleogene sediments are not present in the crater.
Map showing the location of the study area in Maryland and Virginia. Each dot represents an outcrop (red), core (black) or water well (orange) where Paleogene formation thicknesses were obtained. The circular feature in the southern portion of the map is the Chesapeake Bay Impact Crater. Paleogene sediments are not present in the crater.
USGS Geologists Jean Self-Trail and Mercer Parker taking field notes, Prince George’s County
USGS Geologists Jean Self-Trail and Mercer Parker taking field notes, Prince George’s County
Fossils of the bivalve mollusc Ostrea alepidota from the Paleocene Aquia Formation, Charles County, Maryland.
Fossils of the bivalve mollusc Ostrea alepidota from the Paleocene Aquia Formation, Charles County, Maryland.
A densely packed shell bed of the Paleocene gastropods Kapalmerella mortonii and K. humerosa, along with various bivalve molluscs, King George County, Virginia
A densely packed shell bed of the Paleocene gastropods Kapalmerella mortonii and K. humerosa, along with various bivalve molluscs, King George County, Virginia
USGS Scientist Emeritus David Govoni sampling the Paleocene Aquia Formation, Prince George’s County, Maryland
USGS Scientist Emeritus David Govoni sampling the Paleocene Aquia Formation, Prince George’s County, Maryland
USGS geologists Jean Self-Trail and Mercer Parker measuring and sampling the Paleocene Aquia Formation, Prince George’s County, Maryland
USGS geologists Jean Self-Trail and Mercer Parker measuring and sampling the Paleocene Aquia Formation, Prince George’s County, Maryland
A typical Aquia Formation shell hash consisting mainly of the Paleocene gastropod Kapalmerella mortoni, Prince George’s County, Maryland
A typical Aquia Formation shell hash consisting mainly of the Paleocene gastropod Kapalmerella mortoni, Prince George’s County, Maryland
USGS Scientist Laurel Bybell standing on an indurated bed of the Paleocene Aquia Formation with a thick layer of highly fossilferous Aquia sediment above, Prince George’s County, Maryland
USGS Scientist Laurel Bybell standing on an indurated bed of the Paleocene Aquia Formation with a thick layer of highly fossilferous Aquia sediment above, Prince George’s County, Maryland
General view of an outcrop of the fossiliferous Paleocene Aquia Formation, Prince George’s County, Maryland
General view of an outcrop of the fossiliferous Paleocene Aquia Formation, Prince George’s County, Maryland
U.S. Geological Survey colleagues and friends on the ice at Ion Ice Rink following a Learn to Curl class in Leesburg, VA.
Winter 2026 Photo Contest Winner: Jean Self-Trail, Honorable Mention
U.S. Geological Survey colleagues and friends on the ice at Ion Ice Rink following a Learn to Curl class in Leesburg, VA.
Winter 2026 Photo Contest Winner: Jean Self-Trail, Honorable Mention
Map showing the location of the study area in Maryland and Virginia. Each dot represents an outcrop (red), core (black) or water well (orange) where Paleogene formation thicknesses were obtained. The circular feature in the southern portion of the map is the Chesapeake Bay Impact Crater. Paleogene sediments are not present in the crater.
Map showing the location of the study area in Maryland and Virginia. Each dot represents an outcrop (red), core (black) or water well (orange) where Paleogene formation thicknesses were obtained. The circular feature in the southern portion of the map is the Chesapeake Bay Impact Crater. Paleogene sediments are not present in the crater.
USGS Geologists Jean Self-Trail and Mercer Parker taking field notes, Prince George’s County
USGS Geologists Jean Self-Trail and Mercer Parker taking field notes, Prince George’s County
Fossils of the bivalve mollusc Ostrea alepidota from the Paleocene Aquia Formation, Charles County, Maryland.
Fossils of the bivalve mollusc Ostrea alepidota from the Paleocene Aquia Formation, Charles County, Maryland.
A densely packed shell bed of the Paleocene gastropods Kapalmerella mortonii and K. humerosa, along with various bivalve molluscs, King George County, Virginia
A densely packed shell bed of the Paleocene gastropods Kapalmerella mortonii and K. humerosa, along with various bivalve molluscs, King George County, Virginia
USGS Scientist Emeritus David Govoni sampling the Paleocene Aquia Formation, Prince George’s County, Maryland
USGS Scientist Emeritus David Govoni sampling the Paleocene Aquia Formation, Prince George’s County, Maryland
USGS geologists Jean Self-Trail and Mercer Parker measuring and sampling the Paleocene Aquia Formation, Prince George’s County, Maryland
USGS geologists Jean Self-Trail and Mercer Parker measuring and sampling the Paleocene Aquia Formation, Prince George’s County, Maryland
A typical Aquia Formation shell hash consisting mainly of the Paleocene gastropod Kapalmerella mortoni, Prince George’s County, Maryland
A typical Aquia Formation shell hash consisting mainly of the Paleocene gastropod Kapalmerella mortoni, Prince George’s County, Maryland
USGS Scientist Laurel Bybell standing on an indurated bed of the Paleocene Aquia Formation with a thick layer of highly fossilferous Aquia sediment above, Prince George’s County, Maryland
USGS Scientist Laurel Bybell standing on an indurated bed of the Paleocene Aquia Formation with a thick layer of highly fossilferous Aquia sediment above, Prince George’s County, Maryland
General view of an outcrop of the fossiliferous Paleocene Aquia Formation, Prince George’s County, Maryland
General view of an outcrop of the fossiliferous Paleocene Aquia Formation, Prince George’s County, Maryland
*Disclaimer: Listing outside positions with professional scientific organizations on this Staff Profile are for informational purposes only and do not constitute an endorsement of those professional scientific organizations or their activities by the USGS, Department of the Interior, or U.S. Government