Florence Bascom Geoscience Center

Publications

Filter Total Items: 550
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Year Published: 2021

Synthesis of geochronologic research on Late Pliocene to Holocene emergent shorelines in the lower Savannah River area of southeastern Georgia, USA

Emergent late Pliocene and Pleistocene shoreline deposits, morphologically identifiable Pleistocene shoreline units, and seaward-facing scarps characterize the easternmost Atlantic Coastal Plain (ACP) of the United States of America. In some areas of the ACP, these deposits, units, and scarps have been studied in detail. Within these areas,...

Markewich, Helaine W.; Pavich, Milan J.; Mahan, Shannon A.; Bierman, Paul R.; Alemán‑González, Wilma B.; Schultz, Arthur P.
Markewich, H.W., Pavich, M.J., Mahan, S.A., Bierman, P.R., Alemán‑González, W.B., and Schultz, A.P., 2021, Synthesis of geochronologic research on Late Pliocene to Holocene emergent shorelines in the lower Savannah River area of southeastern Georgia, USA: U.S. Geological Survey Open-File Report 2021–1015, 48 p., https://doi.org/10.3133/ofr20211015.

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Year Published: 2021

Spatiotemporal patterns of northern lake formation since the last glacial maximum

The northern mid- to high-latitudes have the highest total number and area of lakes on Earth. Lake origins in these regions are diverse, but to a large extent coupled to glacial, permafrost, and peatland histories. The synthesis of 1207 northern lake initiation records presented here provides an analog for rapid landscape-level change in response...

Brosius, L. S.; Walter Anthony, K. M.; Treat, C. C.; Lenz, J.; Jones, Miriam C.; Bret-Harte, M. Syndonia; Grosse, G.

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Year Published: 2021

River terrace evidence of tectonic processes in the eastern North American plate interior, South Anna River, Virginia

We show that long-recognized seismicity in the central Virginia seismic zone (CVSZ) of the eastern North American (ENAM) intraplate setting arises primarily from tectonic processes predicted by new, fully coupled plate tectonic geodynamic models. The study leverages much new geophysical and geologic data following the 2011 Mineral, VA earthquake...

Pazzaglia, Frank J.; Malenda, Helen F.; McGavick, Matthew L.; Raup, Cody; Carter, Mark W.; Berti, Claudio; Mahan, Shannon A.; Nelson, Michelle S.; Rittenour, Tammy M.; Counts, Ron; Willenbring, Jane K; Germanoski, Dru; Peters, Stephen C.; Holt, William D.

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Year Published: 2021

Expert assessment of future vulnerability of the global peatland carbon sink

The carbon balance of peatlands is predicted to shift from a sink to a source this century. However, peatland ecosystems are still omitted from the main Earth system models that are used for future climate change projections, and they are not considered in integrated assessment models that are used in impact and mitigation studies. By using...

Loisel, Julie; Gallego-Sala, A.V.; Amesbury, M.J.; Magnan, G.; Anshari, G.; Beilman, D. W.; Blewett, J.; Benevides, J. C.; Camill, P.; Charman, D. J.; Chawchai, S.; Hedgpeth, A.; Kleinen, T.; Korhola, A.; Large, D.; Müller, J.; Mansilla, C. A.; van Bellen, S.; West, J. B.; Yu, Z.; Bubier, J. L.; Garneau, M.; Moore, T.; Sannel, A. B. K.; Väliranta, M.; Page, S.; Bechtold, M.; Brovkin, V.; Cole, L. E. S.; Chanton, J. P.; Christensen, T. R.; Davies, M. A.; De Vleeschouwer, F.; Finkelstein, S.A.; Frolking, S.; Galka, M.; Gandois, L.; Girkin, N.; Harris, .L.I.; Heinemeyer, A.; Hoyt, A.M.; Jones, Miriam C.; Joos, F.; Juutinen, S.; Kaiser, K.; Lamentowicz, M.; Larmola, T.; Leifeld, M.; Lohila, A.; Milner, A.M.; Minkkinen, Kari; Moss, P.; Naafs, B.D.A.; Nichols, J.; O'Donnell, J.; Payne, R.; Philben, M.; Pilo, S.; Quillet, A.; Ratnayake, A.S.; Roland, T.P.; Sjogersten, S.; Sonnentag, O.; Swindles, G.T.; Swinnen, W.; Talbott, J.; Treat, C. C.; Valach, A.C.; Wu, J.

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Year Published: 2021

Karst geology of the Upper Midwest, USA

Karst in the Upper Midwest occurs within a thick sequence of mixed carbonate and siliciclastic Cambrian through Pennsylvanian sedimentary rocks, with a minor occurrence of karst in Proterozoic sandstone. Deposition of the sediments occurred on a marine epeiric ramp that spanned much of the North American continent through most of the...

Doctor, Daniel H.; Alexander, E. Calvin

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Year Published: 2021

Dendritic reidite from the Chesapeake Bay impact horizon, Ocean Drilling Program Site 1073 (offshore northeastern USA): A fingerprint of distal ejecta?

High-pressure minerals provide records of processes not normally preserved in Earth’s crust. Reidite, a quenchable polymorph of zircon, forms at pressures >20 GPa during shock compression. However, there is no broad consensus among empirical, experimental, and theoretical studies on the nature of the polymorphic transformation. Here we decipher...

Cavosie, Aaron J.; Biren, Marc C; Hodges, Kip V.; Wartho, Jo-Anne; Horton, J. Wright; Koeberl, Christian

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Year Published: 2020

Bedrock geologic map of the Springfield 7.5- x 15-minute quadrangle, Windsor County, Vermont, and Sullivan County, New Hampshire

The bedrock geology of the 7.5- by 15-minute Springfield quadrangle consists of highly deformed and metamorphosed Mesoproterozoic through Devonian metasedimentary and meta-igneous rocks. In the west, Mesoproterozoic gneisses of the Mount Holly Complex are the oldest rocks and form the eastern side of the Chester dome. The Moretown slice...

Walsh, Gregory; Valley, Peter M.; Armstrong, Thomas R.; Ratcliffe, Nicholas M.; Merschat, Arthur J.; Gentry, Beau J.
Walsh, G.J., Valley, P.M., Armstrong, T.R., Ratcliffe, N.M., Mershat, A.J., and Gentry, B.J., 2020, Bedrock geologic map of the Springfield 7.5- x 15-minute quadrangle, Windsor County, Vermont, and Sullivan County, New Hampshire: U.S. Geological Survey Scientific Investigations Map 3462, 2 sheets, scale 1:24,000, https://doi.org/10.3133/sim3462.

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Year Published: 2020

Depositional sequence stratigraphy of Turonian to Santonian sediments, Cape Fear arch, North Carolina Coastal Plain, USA

A new sequence stratigraphic framework for Turonian to Santonian (94-84 Ma) sediments is established using data from the USGS Kure Beach and Elizabethtown cores collected from the Atlantic Coastal Plain of North Carolina (NC). These sediments represent some of the oldest marine units deposited on the southeastern Atlantic Coastal Plain and record...

Aleman Gonzalez, Wilma; Self-Trail, Jean M.; Harris, W. Burleigh; Moore, Jessica P.; Farrell, Kathleen

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Year Published: 2020

Environmental data associated with sites infected with white-nose syndrome (WNS) before October 2011 in North America

White-nose syndrome (WNS) is an emerging infectious disease of hibernating bats caused by a fungus previously known as Geomyces destructans and reclassified as Pseudogymnoascus destructans. The disease was first documented in 2006 in New York, has since spread across much of eastern North America, and as of January 2012, had caused the death of at...

Swezey, Christopher S.; Garrity, Christopher P.
Swezey, C.S., and Garrity, C.P., 2020, Environmental data associated with sites infected with white-nose syndrome (WNS) before October 2011 in North America: U.S. Geological Survey Open-File Report 2020–1117, 67 p., https://doi.org/10.3133/ofr20201117.

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Year Published: 2020

Tidal wetland resilience to increased rates of sea level rise in the Chesapeake Bay: Introduction to the special feature

The papers in this Special Feature are the result of the first Marsh Resilience Summit in the Chesapeake Bay region, which occurred in February 2019. The Chesapeake Bay region has one of the highest rates of relative sea level rise in the U.S., jeopardizing over 1000 km2 of tidal wetlands along with other coastal lands. The goal of the...

Sudol, Taryn A; Noe, Gregory B.; Reed, Denise J

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Year Published: 2020

North American commission on stratigraphic nomenclature report 14 – Revision of articles 25-27 of the North American stratigraphic code to formalize subseries and subepochs

At the 75th Annual Meeting of the North American Commission on Stratigraphic Nomenclature, 22 October, 2020, in connection with GSA 2020 Connects Online, the Commission voted unanimously to accept the revision of Articles 73, 81 and 82 of the North American Stratigraphic Code (North American Commission on Stratigraphic Nomenclature, 2005 with...

Aubry, Marie-Pierre; Fluegeman, Richard H.; Edwards, Lucy E.; Pratt, Brian R.; Brett, Carlton E.

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Year Published: 2020

Historically unprecedented Northern Gulf of Mexico hurricane activity from 650 to 1250 CE

Hurricane Michael (2018) was the first Category 5 storm on record to make landfall on the Florida panhandle since at least 1851 CE (Common Era), and it resulted in the loss of 59 lives and $25 billion in damages across the southeastern U.S. This event placed a spotlight on recent intense (exceeding Category 4 or 5 on the Saffir-Simpson Hurricane...

Rodysill, Jessica R. ; Donnelly, Jeffrey P.; Sullivan, Richard; Lane, Philip D.; Toomey, Michael; Woodruff, Jonathan D.; Hawkes, Andrea D.; MacDonald, Dana; d’Entremont, Nicole; McKeon, Kelly; Wallace, Elizabeth; van Hengstum, Peter J.