Ellen L Seefelt (Former Employee)
Science and Products
Cenozoic Calcareous Nannofossil Occurrences from South Atlantic Coastal Plain Cores
In this data release, Cenozoic calcareous nannofossil occurrence charts are provided as Microsoft Excel spreadsheets for 17 cores from the South Atlantic Coastal Plain (North Carolina, South Carolina, and Georgia) Samples have been assigned a USGS sample number and are organized by depth below the land surface. Based on their known stratigraphic position, lithology, and specific calcareous nannofo
Evolution and taxonomy of the Paleogene calcareous nannofossil genus Hornibrookina
The genus Hornibrookina consists of enigmatic calcareous nannofossils that first appeared shortly after the K-Pg mass extinction. Due to their relative paucity in most published sections, specimens of this genus have not been previously studied in detail and their paleobiogeographic preferences and evolutionary history have been poorly understood. Biostratigraphic and morphometric analyses of Horn
Authors
Jean Self-Trail, David K. Watkins, James J. Pospichal, Ellen Seefelt
A brief geological history of Cockspur Island at Fort Pulaski National Monument, Chatham County, Georgia
Fort Pulaski National Monument is located on Cockspur Island in Chatham County, Georgia, within the Atlantic Coastal Plain province. The island lies near the mouth of the Savannah River, and consists of small mounds (hummocks), salt marshes, and sediment dredged from the river. A 1,017-foot (ft) (310-meter [m])-deep core drilled at Cockspur Island in 2010 by the U.S. Geological Survey revealed sev
Authors
Christopher S. Swezey, Ellen Seefelt, Mercer Parker
Biostratigraphic and morphometric analyses of specimens from the calcareous nannofossil genus Tribrachiatus
Biostratigraphic and morphometric analyses of calcareous nannofossil assemblages from one outcrop and two cored sections of lower Eocene sediments reveal the presence of two new species: Tribrachiatus lunatus sp. nov., and Tribrachiatus absidatus sp. nov. Differences between the new species and Tribrachiatus orthostylus are discussed. The first occurrence of the two new species is just below the
Authors
Jean Self-Trail, Ellen Seefelt, Claire L. Shepherd, Victoria A. Martin
Comparison of three preservation techniques for slowing dissolution of calcareous nannofossils in organic rich sediments
In an attempt to halt or reduce dissolution of calcareous nannofossils in organic and/or pyrite-rich sediments, three different methods of short-term storage preservation were tested for efficacy: vacuum packing, argon gas replacement, and buffered water. Abundance counts of calcareous nannofossil assemblages over a six month period showed that none of the three preservation methods were consisten
Authors
Ellen Seefelt, Jean Self-Trail, Arthur P. Schultz
Preliminary physical stratigraphy, biostratigraphy, and geophysical data of the USGS South Dover Bridge Core, Talbot County, Maryland
The South Dover Bridge (SDB) corehole was drilled in October 2007 in Talbot County, Maryland. The main purpose for drilling this corehole was to characterize the Upper Cretaceous and Paleogene lithostratigraphy and biostratigraphy of the aquifers and confining units of this region. The data obtained from this core also will be used as a guide to geologic mapping and to help interpret well data fro
Authors
Wilma B. Alemán González, David S. Powars, Ellen Seefelt, Lucy E. Edwards, Jean M. Self-Trail, Colleen T. Durand, Arthur P. Schultz, Peter P. McLaughlin
Drilling a deep geologic test well at Hilton Head Island, South Carolina
The U.S. Geological Survey, in cooperation with the South Carolina Department of Health and Environmental Control (SCDHEC), is drilling a deep geologic test well at Hilton Head Island, S.C. The test well is scheduled to run between mid-March and early May 2011. When completed, the well will be about 1,000 feet deep. The purpose of this test well is to gain knowledge about the regional-scale Florid
Authors
Arthur P. Schultz, Ellen Seefelt
Drilling a Deep Geologic Test Well at Fort Pulaski National Monument, Georgia
The U.S. Geological Survey, in cooperation with the National Park Service, is drilling a deep geologic test well at Fort Pulaski National Monument, Georgia. The operation is scheduled to run between mid-February and mid-April 2010. When completed, the well will be about 1,500 feet deep. The purpose of this test well is to gain knowledge about the regional-scale Floridan aquifer, an important sourc
Authors
Arthur P. Schultz, Ellen Seefelt
Preliminary Physical Stratigraphy and Geophysical Data From the USGS Dixon Core, Onslow County, North Carolina
In October through November 2006, scientists from the U. S. Geological Survey (USGS) Eastern Region Earth Surface Processes Team (EESPT) and the Raleigh (N.C.) Water Science Center (WSC), in cooperation with the North Carolina Geological Survey (NCGS) and the Onslow County Water and Sewer Authority (ONWASA), drilled a stratigraphic test hole and well in Onslow County, N.C. The Dixon corehole was c
Authors
Ellen Seefelt, Wilma Aleman B. Gonzalez, Jean M. Self-Trail, Robert E. Weems, Lucy E. Edwards, Herbert A. Pierce, Colleen T. Durand
Preliminary physical stratigraphy and geophysical data of the USGS Hope Plantation core (BE-110), Bertie County, North Carolina
In March and April, 2004, the U.S. Geological Survey (USGS), in cooperation with the North Carolina Geological Survey (NCGS) and the Raleigh Water Resources Discipline (WRD), drilled a stratigraphic test hole and well in Bertie County, North Carolina (fig. 1). The Hope Plantation test hole (BE-110-2004) was cored on the property of Hope Plantation near Windsor, North Carolina. The drill site is lo
Authors
Robert E. Weems, Ellen Seefelt, Beth M. Wrege, Jean M. Self-Trail, David C. Prowell, Colleen Durand, Eugene F. Cobbs, Kevin C. McKinney
Science and Products
Cenozoic Calcareous Nannofossil Occurrences from South Atlantic Coastal Plain Cores
In this data release, Cenozoic calcareous nannofossil occurrence charts are provided as Microsoft Excel spreadsheets for 17 cores from the South Atlantic Coastal Plain (North Carolina, South Carolina, and Georgia) Samples have been assigned a USGS sample number and are organized by depth below the land surface. Based on their known stratigraphic position, lithology, and specific calcareous nannofo
Evolution and taxonomy of the Paleogene calcareous nannofossil genus Hornibrookina
The genus Hornibrookina consists of enigmatic calcareous nannofossils that first appeared shortly after the K-Pg mass extinction. Due to their relative paucity in most published sections, specimens of this genus have not been previously studied in detail and their paleobiogeographic preferences and evolutionary history have been poorly understood. Biostratigraphic and morphometric analyses of Horn
Authors
Jean Self-Trail, David K. Watkins, James J. Pospichal, Ellen Seefelt
A brief geological history of Cockspur Island at Fort Pulaski National Monument, Chatham County, Georgia
Fort Pulaski National Monument is located on Cockspur Island in Chatham County, Georgia, within the Atlantic Coastal Plain province. The island lies near the mouth of the Savannah River, and consists of small mounds (hummocks), salt marshes, and sediment dredged from the river. A 1,017-foot (ft) (310-meter [m])-deep core drilled at Cockspur Island in 2010 by the U.S. Geological Survey revealed sev
Authors
Christopher S. Swezey, Ellen Seefelt, Mercer Parker
Biostratigraphic and morphometric analyses of specimens from the calcareous nannofossil genus Tribrachiatus
Biostratigraphic and morphometric analyses of calcareous nannofossil assemblages from one outcrop and two cored sections of lower Eocene sediments reveal the presence of two new species: Tribrachiatus lunatus sp. nov., and Tribrachiatus absidatus sp. nov. Differences between the new species and Tribrachiatus orthostylus are discussed. The first occurrence of the two new species is just below the
Authors
Jean Self-Trail, Ellen Seefelt, Claire L. Shepherd, Victoria A. Martin
Comparison of three preservation techniques for slowing dissolution of calcareous nannofossils in organic rich sediments
In an attempt to halt or reduce dissolution of calcareous nannofossils in organic and/or pyrite-rich sediments, three different methods of short-term storage preservation were tested for efficacy: vacuum packing, argon gas replacement, and buffered water. Abundance counts of calcareous nannofossil assemblages over a six month period showed that none of the three preservation methods were consisten
Authors
Ellen Seefelt, Jean Self-Trail, Arthur P. Schultz
Preliminary physical stratigraphy, biostratigraphy, and geophysical data of the USGS South Dover Bridge Core, Talbot County, Maryland
The South Dover Bridge (SDB) corehole was drilled in October 2007 in Talbot County, Maryland. The main purpose for drilling this corehole was to characterize the Upper Cretaceous and Paleogene lithostratigraphy and biostratigraphy of the aquifers and confining units of this region. The data obtained from this core also will be used as a guide to geologic mapping and to help interpret well data fro
Authors
Wilma B. Alemán González, David S. Powars, Ellen Seefelt, Lucy E. Edwards, Jean M. Self-Trail, Colleen T. Durand, Arthur P. Schultz, Peter P. McLaughlin
Drilling a deep geologic test well at Hilton Head Island, South Carolina
The U.S. Geological Survey, in cooperation with the South Carolina Department of Health and Environmental Control (SCDHEC), is drilling a deep geologic test well at Hilton Head Island, S.C. The test well is scheduled to run between mid-March and early May 2011. When completed, the well will be about 1,000 feet deep. The purpose of this test well is to gain knowledge about the regional-scale Florid
Authors
Arthur P. Schultz, Ellen Seefelt
Drilling a Deep Geologic Test Well at Fort Pulaski National Monument, Georgia
The U.S. Geological Survey, in cooperation with the National Park Service, is drilling a deep geologic test well at Fort Pulaski National Monument, Georgia. The operation is scheduled to run between mid-February and mid-April 2010. When completed, the well will be about 1,500 feet deep. The purpose of this test well is to gain knowledge about the regional-scale Floridan aquifer, an important sourc
Authors
Arthur P. Schultz, Ellen Seefelt
Preliminary Physical Stratigraphy and Geophysical Data From the USGS Dixon Core, Onslow County, North Carolina
In October through November 2006, scientists from the U. S. Geological Survey (USGS) Eastern Region Earth Surface Processes Team (EESPT) and the Raleigh (N.C.) Water Science Center (WSC), in cooperation with the North Carolina Geological Survey (NCGS) and the Onslow County Water and Sewer Authority (ONWASA), drilled a stratigraphic test hole and well in Onslow County, N.C. The Dixon corehole was c
Authors
Ellen Seefelt, Wilma Aleman B. Gonzalez, Jean M. Self-Trail, Robert E. Weems, Lucy E. Edwards, Herbert A. Pierce, Colleen T. Durand
Preliminary physical stratigraphy and geophysical data of the USGS Hope Plantation core (BE-110), Bertie County, North Carolina
In March and April, 2004, the U.S. Geological Survey (USGS), in cooperation with the North Carolina Geological Survey (NCGS) and the Raleigh Water Resources Discipline (WRD), drilled a stratigraphic test hole and well in Bertie County, North Carolina (fig. 1). The Hope Plantation test hole (BE-110-2004) was cored on the property of Hope Plantation near Windsor, North Carolina. The drill site is lo
Authors
Robert E. Weems, Ellen Seefelt, Beth M. Wrege, Jean M. Self-Trail, David C. Prowell, Colleen Durand, Eugene F. Cobbs, Kevin C. McKinney