Florence Bascom Geoscience Center

Publications

Filter Total Items: 385
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Year Published: 2015

Thermokarst lake methanogenesis along a complete talik profile

Thermokarst (thaw) lakes emit methane (CH4) to the atmosphere formed from thawed permafrost organic matter (OM), but the relative magnitude of CH4 production in surface lake sediments vs. deeper thawed permafrost horizons is not well understood. We assessed anaerobic CH4 production potentials from various depths along a 590 cm long lake sediment...

Heslop, J.K.; Walter Anthony, K.M.; Sepulveda-Jauregui, A.; Martinez-Cruz, K.; Bondurant, A.; Grosse, G.; Jones, Miriam C.
Heslop, J. K., Walter Anthony, K. M., Sepulveda-Jauregui, A., Martinez-Cruz, K., Bondurant, A., Grosse, G., and Jones, M. C.: Thermokarst lake methanogenesis along a complete talik profile, Biogeosciences, 12, 4317-4331

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Year Published: 2015

Geology and neotectonism in the epicentral area of the 2011 M5.8 Mineral, Virginia, earthquake

This fi eld guide covers a two-day west-to-east transect across the epicentral region of the 2011 M5.8 Mineral, Virginia, earthquake, the largest ever recorded in the Central Virginia seismic zone. The fi eld trip highlights results of recent bedrock and surficial geologic mapping in two adjoining 7.5-min quadrangles, the Ferncliff and the...

Burton, William C.; Spears, David B.; Harrison, Richard W.; Evans, Nicholas H.; Schindler, J. Stephen; Counts, Ronald C.
Burton, W.C., Spears, D.B., Harrison, R.W., Evans, N.H., Schindler, J.S., and Counts, R., 2014, Geology and neotectonism in the epicentral area of the 2011 M5.8 Mineral, Virginia, earthquake , in Bailey, C.M., Coiner, L.V., eds., Elevating geoscience in the southeastern United States: New ideas about old terranes—Field guides for the GSA Southeastern Section Meeting, Blacksburg, Virginia, 2014: Geological Society of America Field Guides, v. 35, p. 103-127 doi: 10.1130/2014.0035(04) IP-053260 (BA 12/31/13)

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Year Published: 2015

Stafford fault system: 120 million year fault movement history of northern Virginia

The Stafford fault system, located in the mid-Atlantic coastal plain of the eastern United States, provides the most complete record of fault movement during the past ~120 m.y. across the Virginia, Washington, District of Columbia (D.C.), and Maryland region, including displacement of Pleistocene terrace gravels. The Stafford fault system is close...

Powars, David S.; Catchings, Rufus D.; Horton, J. Wright; Schindler, J. Stephen; Pavich, Milan J.
Powars, D.S., Catchings, R.D., Horton, J.W., Jr., Schindler, J.S., and Pavich, M.J., 2015, Stafford fault system: 120 million year fault movement history of northern Virginia, in Horton, J.W., Jr., Chapman, M.C., and Green, R.A., eds., The 2011 Mineral, Virginia, Earthquake, and Its Significance for Seismic Hazards in Eastern North America: Geological Society of America Special Paper 509, p.

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Year Published: 2015

Late Holocene sea- and land-level change on the U.S. southeastern Atlantic Coast

Late Holocene relative sea-level (RSL) reconstructions can be used to estimate rates of land-level (subsidence or uplift) change and therefore to modify global sea-level projections for regional conditions. These reconstructions also provide the long-term benchmark against which modern trends are compared and an opportunity to understand the...

Kemp, Andrew C.; Bernhardt, Christopher E.; Horton, Benjamin P.; Kopp, Robert E.; Vane, Christopher H.; Peltier, W. Richard; Hawkes, Andrea D.; Donnelly, Jeffrey P.; Parnell, Andrew C.; Cahill, Niamh
Kemp, A.C., Bernhardt, C.E., Horton, B.P., Kopp, R.E., Vane, C.H., Peltier, W.R., Hawkes, A.D., Donnelly, J.P., Parnell, A.C., and Cahill, N., 2014, Late Holocene sea- and land-level change on the U.S. southeastern Atlantic Coast: Marine Geology, v. 357, p. 90-100.

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Year Published: 2015

The 2011 Mineral, Virginia, earthquake and its significance for seismic hazards in eastern North America: overview and synthesis

The 23 August 2011 Mw (moment magnitude) 5.7 ± 0.1, Mineral, Virginia, earthquake was the largest and most damaging in the central and eastern United States since the 1886 Mw 6.8–7.0, Charleston, South Carolina, earthquake. Seismic data indicate that the earthquake rupture occurred on a southeast-dipping reverse fault and...

Horton, J. Wright; Chapman, Martin C.; Green, Russell A.
Horton, J.W., Jr., Chapman, M.C., and Green, R.A., 2015, The 2011 Mineral, Virginia, earthquake, and its signifi cance for seismic hazards in eastern North America—Overview and synthesis, in Horton, J.W., Jr., Chapman, M.C., and Green, R.A., eds., The 2011 Mineral, Virginia, Earthquake, and Its Signifi cance for Seismic Hazards in Eastern North America: Geological Society of America Special Paper 509, p. 1–25, doi:10.1130/2015.2509(01).

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Year Published: 2014

USGS geologic Mapping and karst research in the Ozark National Scenic Riverways, Missouri, USA

The Ozark National Scenic Riverways (ONSR) was created in 1964 to protect 134 miles of the Current River and its major tributary, the Jacks Fork, that are located in south-central Missouri (fig. 1). The park includes numerous large karst springs including Big Spring, by flow volume this is the largest spring in the National Park system. The...

Weary, David J.; Grant, Victoria M
Weary, D.J. and Grant, V.M., 2014, USGS geologic Mapping and karst research in the Ozark National Scenic Riverways, Missouri, USA: in Santucci, V.L., ed., NPS–USGS Collaboration to Support Science and Resource Management in the National Parks, The George Wright Forum, the George Wright Society Journal of Parks, Protected Areas & Cultural Sites, v. 31. No. 2, p. 157-167.

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Year Published: 2014

Sources and sinks of carbon in boreal ecosystems of interior Alaska: a review

Boreal regions store large quantities of carbon but are increasingly vulnerable to carbon loss due to disturbance and climate warming. The boreal region, underlain by discontinuous permafrost, presents a challenging landscape for itemizing current and potential carbon sources and sinks in the boreal soil and vegetation. The roles of fire, forest...

Douglas, Thomas A.; Jones, Miriam C.; Hiemstra, Christopher A.
Douglas, T.A., Jones, M.C., Hiemstra, C.A., and Arnold, J.R., 2014, Sources and sinks of carbon in boreal ecosystems of interior Alaska: A review: Elementa Science of the Anthropocene 2: 000032

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Year Published: 2014

Quaternary geology of the Boston area: Glacial events from Lake Charles to Lake Aberjona

The multiple-glacial and glaciomarine Quaternary history of the Boston, Massachusetts area has been known generally since the earliest studies of the then newly recognized glacial deposits described by Prof. Louis Agassiz in the late1840’s and fossil marine shells in the drift in the 1850’s. Attention then turned to possible glacial erosional...

Stone, Byron D.; Lane, John W.
Stone, B.D., 2014, Quaternary geology of the Boston area: Glacial events from Lake Charles to Lake Aberjona, in Thompson, M.D., ed., Guidebook to Field Trips in Southeastern New England (MA-NH-RI): New England Intercollegiate Geologic Conference, p. B1-1 to B1-24.

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Year Published: 2014

Volcanoes of the passive margin: The youngest magmatic event in eastern North America

The rifted eastern North American margin (ENAM) provides important clues to the long-term evolution of continental margins. An Eocene volcanic swarm exposed in the Appalachian Valley and Ridge Province of Virginia and West Virginia (USA) contains the youngest known igneous rocks in the ENAM. These magmas provide the only window into the most...

Mazza, Sarah E; Gazel, Esteban; Johnson, Elizabeth A; Kunk, Michael J.; McAleer, Ryan J.; Spotila, James A; Bizimis, Michael; Coleman, Drew S
Mazza, S. E., Gazel, E., Johnson, E. A., Kunk, M. J., McAleer, R., Spotila, J. A., Bizimis, M., and Coleman, D. S., 2014, Volcanoes of the passive margin: The youngest magmatic event in eastern North America: Geology, v. 42, n. 6, p. 483–486

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Year Published: 2014

Neoproterozoic–Cambrian stratigraphic framework of the Anti-Atlas and Ouzellagh promontory (High Atlas), Morocco

In the last two decades, great progress has been made in the geochronological, chrono- and chemostratigraphic control of the Neoproterozoic and Cambrian from the Anti-Atlas Ranges and the Ouzellagh promontory (High Atlas). As a result, the Neoproterozoic is lithostratigraphically subdivided into: (i) the Lkest-Taghdout Group (broadly interpreted...

Alvaro, Jose Javier; Benziane, Fouad; Thomas, Robert; Walsh, Gregory J.; Yazidi, Abdelaziz

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Year Published: 2014

Digital Mapping Techniques '11–12 workshop proceedings

The Digital Mapping Techniques '11 (DMT'11) workshop was hosted by Virginia Division of Geology and Mineral Resources and The College of William & Mary, and coordinated by the National Geologic Map Database project. Conducted May 22-25 on the campus of The College of William & Mary, in Williamsburg, Virginia, it was attended by 77...

Soller, David R.
Soller, D.R., ed., 2014, Digital Mapping Techniques '11–12 Workshop Proceedings: U.S. Geological Survey Open-File Report 2014–1167, 134 p., http://dx.doi.org/10.3133/ofr20141167. ISSN 2331–1258 (online)

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Year Published: 2014

Catinaster virginianus sp. nov.: A new species of Catinaster from the middle Miocene Mid-Atlantic Coastal Plain

High-resolution analysis of sediments from four coreholes associated with the Chesapeake Bay impact crater has resulted in the identification of a new species, Catinaster virginianus. This species is similar to Catinaster coalitus coalitus, but differs in having a proximal stem. The first occurrence of C. virginianus is in Zone NN5...

Self-Trail, Jean M.