Florence Bascom Geoscience Center

Publications

Filter Total Items: 384
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Year Published: 2014

Estimates of natural salinity and hydrology in a subtropical estuarine ecosystem: implications for Greater Everglades restoration

Disruption of the natural patterns of freshwater flow into estuarine ecosystems occurred in many locations around the world beginning in the twentieth century. To effectively restore these systems, establishing a pre-alteration perspective allows managers to develop science-based restoration targets for salinity and hydrology. This paper describes...

Marshall, Frank E.; Wingard, G. Lynn; Pitts, Patrick A.
Marshall, F.E., Wingard, G.L., and Pitts, P.A. 2014. Estimates of Natural Salinity and Hydrology in a Subtropical Estuarine Ecosystem:  Implications for Greater Everglades Restoration. Estuaries and Coasts v. 37, n. 6, p. 1449-1466.

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Year Published: 2014

Stitching the western Piedmont of Virginia: Early Paleozoic tectonic history of the Ellisville Pluton and the Potomac and Chopawamsic Terranes

The theme of the 2014 Virginia Geological Field Conference is the tectonic development, economic geology, and seismicity of the western Piedmont of Louisa County, Virginia. It is timely for the conference to turn its attention here, for during the past decade these aspects of western Piedmont geology have garnered the renewed attention of...

Hughes, K. S.; Hibbard, J. P.; Sauer, R.T.; Burton, William C.
Hughes, K.S., Hibbard, J.P., Sauer, R.T., and Burton, W.C., 2014, Stitching the western Piedmont of Virginia: Early Paleozoic tectonic history of the Ellisville Pluton and the Potomac and Chopawamsic Terranes: 44th Annual Virginia Geological Field Conference, Virginia Museum of Natural History, VMNH Guidebook no. 9, 33 p.

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Year Published: 2014

Macroevolutionary consequences of profound climate change on niche evolution in marine molluscs over the past three million years

In order to predict the fate of biodiversity in a rapidly changing world, we must first understand how species adapt to new environmental conditions. The long-term evolutionary dynamics of species' physiological tolerances to differing climatic regimes remain obscure. Here, we unite palaeontological and neontological data to analyse whether...

Saupe, E.E.; Hendricks, J.R.; Portell, R.W.; Dowsett, Harry J.; Haywood, A. M.; Hunter, S.J.; Lieberman, B.S.
Saupe, E.E., Hendricks, J.R., Portell, R.W., Dowsett, H.J., Haywood, A., Hunter, S.J., and Lieberman, B.S., 2014, Macroevolutionary consequences of profound climate change on niche evolution in marine molluscs over the past three million years: Proceedings of the Royal Society of London B: Biological Sciences, v. 281, no. 1795.

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Year Published: 2014

The role of conflict minerals, artisanal mining, and informal trading networks in African intrastate and regional conflicts

The relationship between natural resources and armed conflict gained public and political attention in the 1990s, when it became evident that the mining and trading of diamonds were connected with brutal rebellions in several African nations. Easily extracted resources such as alluvial diamonds and gold have been and continue to be exploited by...

Chirico, Peter G.; Malpeli, Katherine C.

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Year Published: 2014

Bedrock geologic map of the Uxbridge quadrangle, Worcester County, Massachusetts, and Providence County, Rhode Island

The bedrock geology of the 7.5-minute Uxbridge quadrangle consists of Neoproterozoic metamorphic and igneous rocks of the Avalon zone. In this area, rocks of the Avalon zone lie within the core of the Milford antiform, south and east of the terrane-bounding Bloody Bluff fault zone. Permian pegmatite dikes and quartz veins occur throughout the...

Walsh, Gregory J.
Bedrock geologic map of the Uxbridge quadrangle, Worcester County, Massachusetts, and Providence County, Rhode Island; 2014; SIM; 3295; Walsh, Gregory J.

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Year Published: 2014

Integrated conceptual ecological model and habitat indices for the southwest Florida coastal wetlands

The coastal wetlands of southwest Florida that extend from Charlotte Harbor south to Cape Sable, contain more than 60,000 ha of mangroves and 22,177 ha of salt marsh. These coastal wetlands form a transition zone between the freshwater and marine environments of the South Florida Coastal Marine Ecosystem (SFCME). The coastal wetlands...

Wingard, G. Lynn; Lorenz, J. L.
Wingard, G.L., and Lorenz, J. 2014, Integrated Conceptual Ecological Model and Habitat Indices for the Southwest Florida Coastal Wetlands. Ecological Indicators v. 44, p. 92-107.

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Year Published: 2014

Quaternary ostracode and foraminiferal biostratigraphy and paleoceanography in the western Arctic Ocean

The stratigraphic distributions of ostracodes and selected calcareous benthic and planktic foraminiferal species were studied in sediment cores from ~ 700 to 2700 m water depth on the Northwind, Mendeleev, and Lomonosov Ridges in the western Arctic Ocean. Microfaunal records in most cores cover mid- to late Quaternary sediments deposited...

Cronin, Thomas M.; DeNinno, Lauren H.; Polyak, L.V.; Caverly, Emma K.; Poore, Richard Z.; Brenner, Alec R.; Rodriguez-Lazaro, J.; Marzen, R.E.
Cronin, T. M., DeNinno, L. H. Polyak, L., Caverly, E. K., Poore, R. Z. Brenner, A., Rodriguez-Lazaro, J. and R. E. Marzen, 2014, Quaternary Ostracode and Foraminiferal Biostratigraphy and Paleoceanography in the Western Arctic Ocean. Marine Micropaleontology 111, 118-133, doi:10.1016/j.marmicro.2014.05.001

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Year Published: 2014

Karst in the United States: a digital map compilation and database

This report describes new digital maps delineating areas of the United States, including Puerto Rico and the U.S. Virgin Islands, having karst or the potential for development of karst and pseudokarst. These maps show areas underlain by soluble rocks and also by volcanic rocks, sedimentary deposits, and permafrost that have potential for karst or...

Weary, David J.; Doctor, Daniel H.
Karst in the United States: a digital map compilation and database; 2014; OFR; 2014-1156; Weary, David J.; Doctor, Daniel H.

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Year Published: 2014

Late Holocene sea level variability and Atlantic Meridional Overturning Circulation

Pre-twentieth century sea level (SL) variability remains poorly understood due to limits of tide gauge records, low temporal resolution of tidal marsh records, and regional anomalies caused by dynamic ocean processes, notably multidecadal changes in Atlantic Meridional Overturning Circulation (AMOC). We examined SL and AMOC variability along the...

Cronin, Thomas M.; Farmer, Jesse R.; Marzen, R. E.; Thomas, E.; Varekamp, J.C.

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Year Published: 2014

Changing amounts and sources of moisture in the U.S. southwest since the Last Glacial Maximum in response to global climate change

The U.S. southwest has a limited water supply and is predicted to become drier in the 21st century. An improved understanding of factors controlling moisture sources and availability is aided by reconstruction of past responses to global climate change. New stable isotope and growth-rate records for a central Texas speleothem indicate a strong...

Feng, Weimin; Hardt, Benjamin F.; Banner, Jay L.; Meyer, Kevin J.; James, Eric W.; Musgrove, MaryLynn; Edwards, R. Lawrence; Cheng, Hai; Min, Angela
Changing amounts and sources of moisture in the U.S. southwest since the Last Glacial Maximum in response to global climate change; 2014; Article; Journal; Earth and Planetary Science Letters; Feng, Weimin; Hardt, Benjamin F.; Banner, Jay L.; Meyer, Kevin J.; James, Eric W.; Musgrove, MaryLynn; Edwards, R. Lawrence; Cheng, Hai; Min, Angela

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Year Published: 2014

Interagency partnership to assess and restore a degraded urban riverine wetland: Dyke Marsh Wildlife Preserve, Virginia

The narrow-leaved cattail wetland known as Dyke Marsh formally became a land holding of George Washington Memorial Parkway (GWMP, a unit of the national park system) in 1959, along with a congressional directive to honor a newly-let 30-year commercial sand and gravel dredge-mining lease at the site. Dredging continued until 1974 when Public Law 93...

Steury, Brent W.; Litwin, Ronald J.; Oberg, Erik T.; Smoot, Joseph P.; Pavich, Milan J.; Sanders, Geoffrey; Santucci, Vincent L.

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Year Published: 2014

A methodological toolkit for field assessments of artisanally mined alluvial diamond deposits

This toolkit provides a standardized checklist of critical issues relevant to artisanal mining-related field research. An integrated sociophysical geographic approach to collecting data at artisanal mine sites is outlined. The implementation and results of a multistakeholder approach to data collection, carried out in the assessment of Guinea’s...

Chirico, Peter G.; Malpeli, Katherine C.
A methodological toolkit for field assessments of artisanally mined alluvial diamond deposits; 2014; TM; 11-D2; Section D: Field survey methods in Book 11 Collection and Delineation of Spatial Data; Chirico, Peter G.; Malpeli, Katherine C.