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Florence Bascom Geoscience Center

The primary mission of the Florence Bascom Geoscience Center (FBGC) is to provide detailed scientific data and assessments to support natural resource management, public safety, and national security. The FBGC specializes in:

Geologic mapping and hazards

Paleontology, stratigraphy, and environmental geology

Special geologic studies at the intersection of national security and mineral resources

Publications

Atlas of pollen and spores from forests and wetlands in the mid-Atlantic Coastal Plain, USA Atlas of pollen and spores from forests and wetlands in the mid-Atlantic Coastal Plain, USA

This atlas includes descriptions and illustrations of pollen and spores from plant species found in the mid-Atlantic Coastal Plain of the United States of America, with a focus on taxa that grow in or near riparian wetlands. We include light micrographs and detailed descriptions of 141 species spanning 106 genera and 69 families. This atlas was compiled to facilitate the identification...
Authors
Debra A. Willard, Christopher E. Bernhardt

On the fidelity of oxygen isotope-based sea level reconstructions: A case study of Marine Isotope Stage 3 On the fidelity of oxygen isotope-based sea level reconstructions: A case study of Marine Isotope Stage 3

Although foraminiferal oxygen isotope records (δ18OF) have long been used to develop time-continuous estimates of past global ice volume, growing evidence indicates that the ice volume and temperature contributions to δ18OF diverge considerably over the last glacial cycle. Across Marine Isotope Stage 3 (MIS 3; 57 to 29 ka), estimates of peak global sea level based on δ18OF are ∼30 m...
Authors
Tamara Pico, Jesse R. Farmer, Sarah Shackleton, Robert K. Poirier, Bradley R. Markle, Lorraine E. Lisiecki

Springs of the Catskill Mountains: A conduit flow system in predominantly siliciclastic strata Springs of the Catskill Mountains: A conduit flow system in predominantly siliciclastic strata

The Catskill Mountains of New York state are composed of thick sequences of interbedded mudstone, sandstone, and siltstone that are intercalated with thin beds of paludal limestone and calcareous mudstone. Sandstones often contain rip-up clasts of calcareous material at their bases and contain minor amounts of carbonate cement throughout their mass. This minor amount of calcareous...
Authors
Daniel H. Doctor, Joshua R. Benton, Martin Briggs, William E. Odom, Neil C. Terry

Science

Chesapeake Stream Team

Connecting Conservation Practices to Local Stream Health in the Chesapeake Bay Watershed
Chesapeake Stream Team

Chesapeake Stream Team

Connecting Conservation Practices to Local Stream Health in the Chesapeake Bay Watershed
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Evaluating the Effects of Stream-Restoration Practices in an Impaired Agricultural System

Stream-restoration practices are widely used throughout the Chesapeake Bay watershed to improve stream health and function, but research into their effectiveness is limited in agricultural settings. A study in Turtle Creek, Pennsylvania, suggests that stream-restoration practices can significantly reduce streambank erosion and enhance floodplain deposition, changes that can reduce in-stream...
Evaluating the Effects of Stream-Restoration Practices in an Impaired Agricultural System

Evaluating the Effects of Stream-Restoration Practices in an Impaired Agricultural System

Stream-restoration practices are widely used throughout the Chesapeake Bay watershed to improve stream health and function, but research into their effectiveness is limited in agricultural settings. A study in Turtle Creek, Pennsylvania, suggests that stream-restoration practices can significantly reduce streambank erosion and enhance floodplain deposition, changes that can reduce in-stream...
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The “sediment shadow” in Chesapeake Bay’s tidal freshwater rivers has important implications for restoration

Chesapeake Bay restoration efforts are focused on reducing nitrogen, phosphorus, and sediment loads to the estuary. A new synthesis of existing long-term records of suspended-sediment concentrations suggests that only a limited amount of watershed sediment is currently transported by rivers past the tidal freshwater zone and into saltier waters of the Chesapeake Bay.
The “sediment shadow” in Chesapeake Bay’s tidal freshwater rivers has important implications for restoration

The “sediment shadow” in Chesapeake Bay’s tidal freshwater rivers has important implications for restoration

Chesapeake Bay restoration efforts are focused on reducing nitrogen, phosphorus, and sediment loads to the estuary. A new synthesis of existing long-term records of suspended-sediment concentrations suggests that only a limited amount of watershed sediment is currently transported by rivers past the tidal freshwater zone and into saltier waters of the Chesapeake Bay.
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