Florence Bascom Geoscience Center

Publications

Filter Total Items: 348
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Year Published: 2017

The role of paleoecology in restoration and resource management—The past as a guide to future decision-making: Review and example from the Greater Everglades Ecosystem, U.S.A

Resource managers around the world are challenged to develop feasible plans for sustainable conservation and/or restoration of the lands, waters, and wildlife they administer—a challenge made greater by anticipated climate change and associated effects over the next century. Increasingly, paleoecologic and geologic archives are being used to...

Wingard, G. Lynn; Bernhardt, Christopher E.; Wachnicka, Anna
Wingard GL, Bernhardt CE and Wachnicka AH (2017) The Role of Paleoecology in Restoration and Resource Management—The Past As a Guide to Future Decision-Making: Review and Example from the Greater Everglades Ecosystem, U.S.A. Front. Ecol. Evol. 5:11.

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Year Published: 2017

Application of molluscan analyses to the reconstruction of past environmental conditions in estuaries: Chapter 15

Molluscs possess a number of attributes that make them an excellent source of past environmental conditions in estuaries: they are common in estuarine environments; they typically have hard shells and are usually well preserved in sediments; they are relatively easy to detect in the environment; they have limited mobility as adults; they grow by...

Wingard, G. Lynn; Surge, Donna
Wingard, G.L. and Surge, D. 2017. Application of Molluscan Analyses to the Reconstruction of Past Environmental Conditions in Estuaries. In K. Weckstrom, K.M. Saunders, P.A. Gell, C.G. Skilbeck (editors), Applications of Paleoenvironmental Techniques in Estuarine Studies, v. 20 of Developments in Paleoenvironmental Research, p. 357-387.

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Year Published: 2017

Olivine-melt relationships and syneruptive redox variations in the 1959 eruption of Kīlauea Volcano as revealed by XANES

The 1959 summit eruption of Kīlauea Volcano exhibited high lava fountains of gas-rich, primitive magma, containing olivine + chromian spinel in highly vesicular brown glass. Microprobe analysis of these samples shows that euhedral rims on olivine phenocrysts, in direct contact with glass, vary significantly in forsterite (Fo) content, at...

Helz, Rosalind L.; Cottrell, Elizabeth; Brounce, Maryjo N.; Kelley, Katherine A.
Helz, R.T., Cottrell, E., Brounce, M. N., and Kelley, K.A., 2017, Olivine-Melt Relationships and Syneruptive Redox Variations in the 1959 Eruption of Kīlauea Volcano as Revealed by XANES: Bulletin of Volcanology and Geothermal Research, v. 333-334, p. 1-14. http://dx.doi.org/10.1016/j.volgeores.2016.12.006

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Year Published: 2017

Soils as relative-age dating tools

Soils develop at the earth's surface via multiple processes that act through time. Precluding burial or disturbance, soil genetic horizons form progressively and reflect the balance among formation processes, surface age, and original substrate composition. Soil morphology provides a key link between process and time (soil age), enabling soils to...

Markewich, Helaine Walsh; Pavich, Milan J.; Wysocki, Douglas A.
Markewich, H., Pavich, M. J. and Wysocki, D. A. 2017. Soils as Relative-Age Dating Tools. The International Encyclopedia of Geography. 1–14.

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Year Published: 2017

Geologic controls on cave development in Burnsville Cove, Bath and Highland Counties, Virginia

Burnsville Cove in Bath and Highland Counties (Virginia, USA) is a karst region in the Valley and Ridge Province of the Appalachian Mountains. The region contains many caves in Silurian to Devonian limestone, and is well suited for examining geologic controls on cave location and cave passage morphology. In Burnsville Cove, many caves are located...

Swezey, Christopher S.; Haynes, John T.; Lucas, Philip C.; Lambert, Richard A.
Swezey, C.S., Haynes, J.T., Lucas, P.C., and Lambert, R.A., 2017, Geologic controls on cave development in Burnsville Cove, Bath and Highland Counties, Virginia, in Bailey, C.M., and Jaye, S., eds., From the Blue Ridge to the Beach: Geological Field Excursions across Virginia: Geological Society of America Field Guide 47, p. 89–123.

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Year Published: 2017

Cosmogenic nuclide age estimate for Laurentide Ice Sheet recession from the terminal moraine, New Jersey, USA, and constraints on latest Pleistocene ice sheet history

The time at which the Laurentide Ice Sheet reached its maximum extent and subsequently retreated from its terminal moraine in New Jersey has been constrained by bracketing radiocarbon ages on preglacial and postglacial sediments. Here, we present measurements of in situ produced 10Be and 26Al in 16 quartz-bearing samples collected from bedrock...

Corbett, Lee B.; Bierman, Paul R.; Stone, Byron D.; Caffee, Marc W.; Larsen, Patrick L.
Corbett, L., Bierman, P., Stone, B., Caffee, M., & Larsen, P. (2017). Cosmogenic nuclide age estimate for Laurentide Ice Sheet recession from the terminal moraine, New Jersey, USA, and constraints on latest Pleistocene ice sheet history. Quaternary Research, 87(3), 482-498.

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Year Published: 2017

North American Commission on Stratigraphic Nomenclature Report 12 – Revision of article 37, lithodemic units, of the North American Stratigraphic Code

At the 71st Annual Meeting of the North American Commission on Stratigraphic Nomenclature, 26 September, 2016, in Denver, Colorado, the Commission voted unanimously to accept the revision of Article 37 of the North American Stratigraphic Code (North American Commission on Stratigraphic Nomenclature, 2005), printed below. It replaces all older...

Easton, Robert M.; Edwards, Lucy E.; Orndorff, Randall C.; Duguet, Manuel; Ferrusquia-Villafranca, Ismael
North American Commission on Stratigraphic Nomenclature Report 12 Robert M. Easton, Lucy E. Edwards, Randall C. Orndorff, Manuel Duguet, and Ismael Ferrusquía-Villafranca. Stratigraphy Volume 13, No. 3 pp. 220-222 - online 14 Apr 2017

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Year Published: 2017

The 3.6 ka Aniakchak tephra in the Arctic Ocean: A constraint on the Holocene radiocarbon reservoir age in the Chukchi Sea

The caldera-forming eruption of the Aniakchak volcano in the Aleutian Range on the Alaskan Peninsula at 3.6 cal kyr BP was one of the largest Holocene eruptions worldwide. The resulting ash is found as a visible sediment layer in several Alaskan sites and as a cryptotephra on Newfoundland and Greenland. This large geographic distribution, combined...

Pearce, Christof; Varhelyi, Aron; Wastegård, Stefan; Muschitiello, Francesco; Barrientos Macho, Natalia; O'Regan, Matt; Cronin, Thomas M.; Gemery, Laura; Semiletov, Igor; Backman, Jan; Jakobsson, Martin
Pearce, C., Varhelyi, A., Wastegård, S., Muschitiello, F., Barrientos, N., O'Regan, M., Cronin, T. M., Gemery, L., Semiletov, I., Backman, J., and Jakobsson, M.: The 3.6 ka Aniakchak tephra in the Arctic Ocean: a constraint on the Holocene radiocarbon reservoir age in the Chukchi Sea, Clim. Past, 13, 303-316, 2017.

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Year Published: 2017

Creating high-resolution bare-earth digital elevation models (DEMs) from stereo imagery in an area of densely vegetated deciduous forest using combinations of procedures designed for lidar point cloud filtering

For areas of the world that do not have access to lidar, fine-scale digital elevation models (DEMs) can be photogrammetrically created using globally available high-spatial resolution stereo satellite imagery. The resultant DEM is best termed a digital surface model (DSM) because it includes heights of surface features. In densely vegetated...

DeWitt, Jessica D.; Warner, Timothy A.; Chirico, Peter G.; Bergstresser, Sarah E.
Jessica D. DeWitt, Timothy A. Warner, Peter G. Chirico & Sarah E.Bergstresser (2017) Creating high-resolution bare-earth digital elevation models (DEMs) fromstereo imagery in an area of densely vegetated deciduous forest using combinations of proceduresdesigned for lidar point cloud filtering, GIScience & Remote Sensing, 54:4, 552-572

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Year Published: 2017

Extended late Holocene relative sea-level histories for North Carolina, USA

We produced ∼3000-year long relative sea-level (RSL) histories for two sites in North Carolina (USA) using foraminifera preserved in new and existing cores of dated salt-marsh sediment. At Cedar Island, RSL rose by ∼2.4 m during the past ∼3000 years compared to ∼3.3 m at Roanoke Island. This spatial difference arises primarily from...

Kemp, Andrew C.; Kegel, Jessica J.; Culver, Stephen J.; Barber, Donald C.; Mallinson, David J.; Leorri, Eduardo; Bernhardt, Christopher E.; Cahill, Niamh; Riggs, Stanley R.; Woodson, Anna L.; Mulligan, Ryan P.; Horton, Benjamin P.
Kemp A.C., Kegel J.J., Culver S.J., Barber D.C., Mallinson D.J., Leorri E., Bernhardt C.E., Cahill N., Riggs S.R., Woodson A.L., Mulligan R.P., Horton B.P. Extended late Holocene relative sea-level histories for North Carolina, USA Quaternary Science Reviews, Volume 160, p. 13-30.

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Year Published: 2017

Rapid carbon loss and slow recovery following permafrost thaw in boreal peatlands

Permafrost peatlands store one-third of the total carbon (C) in the atmosphere and are increasingly vulnerable to thaw as high-latitude temperatures warm. Large uncertainties remain about C dynamics following permafrost thaw in boreal peatlands. We used a chronosequence approach to measure C stocks in forested permafrost plateaus (forest) and...

Jones, Miriam C.; Harden, Jennifer W.; O'Donnell, Jonathan A.; Manies, Kristen L.; Jorgenson, Torre; Treat, Claire C.; Ewing, Stephanie

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Year Published: 2017

Reply to: Terry, J. and Goff, J. comment on “Late Cenozoic sea level and the rise of modern rimmed atolls” by Toomey et al. (2016), Palaeogeography, Palaeoclimatology, Palaeoecology 4 51: 73–83.

We appreciate Terry and Goff's thoughtful comment in response to our proposed atoll development model. Flank collapse of reef-built slopes likely does affect plan-form atoll morphology in some locations and potentially poses a tsunami hazard to low-lying Pacific islands (Terry and Goff, 2013). However, given the often rapid rates of lagoon infill...

Toomey, Michael; Ashton, Andrew; Raymo, Maureen E.; Perron, J. Taylor
Michael R. Toomey, Andrew D. Ashton, Maureen E. Raymo, J. Taylor Perron, Reply to: Terry, J. and Goff, J. comment on “Late Cenozoic sea level and the rise of modern rimmed atolls” by Toomey et al. (2016), Palaeogeography, Palaeoclimatology, Palaeoecology 4 51: 73–83., Palaeogeography, Palaeoclimatology, Palaeoecology, Volume 469, 1 March 2017, Pages 159-160, ISSN 0031-0182