Florence Bascom Geoscience Center

Publications

Filter Total Items: 385
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Year Published: 2010

Sensitivity of the Greenland Ice Sheet to Pliocene sea surface temperatures

The history of theGrIS (Greenland Ice Sheet), particularly in warm climates of the pre-Quaternary, is poorly known. IRD (ice-rafted debris) records suggest that the ice sheet has existed, at least transiently, since theMiocene and potentially since as long ago as the Eocene. As melting of the GrIS is a key uncertainty in future predictions of...

Hill, Daniel J.; Dolan, Aisling M.; Haywood, Alan M.; Hunter, Stephen J.; Stoll, Danielle K.
Sensitivity of the Greenland Ice Sheet to Pliocene sea surface temperatures; 2010; Article; Journal; Stratigraphy; Hill, Daniel J.; Dolan, Aisling M.; Haywood, Alan M.; Hunter, Stephen J.; Stoll, Danielle K.

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Year Published: 2010

Estuaries of the Greater Everglades Ecosystem: Laboratories of Long-term Change

Restoring the greater Everglades ecosystem of south Florida is arguably the largest ecosystem restoration effort to date. A critical goal is to return more natural patterns of flow through south Florida wetlands and into the estuaries, but development of realistic targets requires acknowledgement that ecosystems are constantly evolving and...

Wingard, G.L.; Hudley, J.W.; Marshall, F.E.
Estuaries of the Greater Everglades Ecosystem: Laboratories of Long-term Change; 2010; FS; 2010-3047; Wingard, G.L.; Hudley, J.W.; Marshall, F.E.

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Year Published: 2010

A chemostratigraphic method to determine the end of impact-related sedimentation at marine-target impact craters (Chesapeake Bay, Lockne, Tvären)

To better understand the impact cratering process and its environmental consequences at the local to global scale, it is important to know when in the geological record of an impact crater the impact-related processes cease. In many instances, this occurs with the end of early crater modification, leaving an obvious sedimentological boundary...

Ormö, Jens; Hill, Andrew C.; Self-Trail, Jean M.

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Year Published: 2010

Paleoclimates: Understanding climate change past and present

The field of paleoclimatology relies on physical, chemical, and biological proxies of past climate changes that have been preserved in natural archives such as glacial ice, tree rings, sediments, corals, and speleothems. Paleoclimate archives obtained through field investigations, ocean sediment coring expeditions, ice sheet coring programs, and...

Cronin, Thomas M.
Cronin, Thomas M. Paleoclimates: Understanding Climate Change Past and Present. Columbia University Press, 2010.

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Year Published: 2010

Teachers guide to geologic trails in Delaware Water Gap National Recreation Area, Pennsylvania–New Jersey

The Delaware Water Gap National Recreation Area (DEWA) contains a rich geologic and cultural history within its 68,714 acre boundary. Following the border between New Jersey and Pennsylvania, the Delaware River has cut a magnificent gorge through Kittatinny Mountain, the Delaware Water Gap, to which all other gaps in the Appalachian Mountains have...

Epstein, Jack B.

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Year Published: 2010

40Ar/39Ar dating of Silurian and late Devonian cleavages in lower greenschist-facies rocks in the Westminster terrane, Maryland, USA

40Ar/39Ar dating of muscovite, biotite, and K-feldspar combined with microstructural analysis of lower greenschist-facies, polymetamorphic, phyllitic rocks, and marbles were successfully used to decipher the thermal and tectonic histories of the Westminster and adjacent terranes in western Maryland. The presence of unreset detrital muscovite in...

Wintsch, R. P.; Kunk, Michael J.; Brian Mulvey; Southworth, C. Scott

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Year Published: 2010

Meteoric 10Be in soil profiles - A global meta-analysis

In order to assess current understanding of meteoric 10Be dynamics and distribution in terrestrial soils, we assembled a database of all published meteoric 10Be soil depth profiles, including 104 profiles from 27 studies in globally diverse locations, collectively containing 679 individual measurements. This allows for the systematic comparison of...

Graly, Joseph A.; Bierman, Paul R.; Reusser, Lucas J.; Pavich, Milan J.
Meteoric 10Be in soil profiles - A global meta-analysis; 2010; Article; Journal; Geochimica et Cosmochimica Acta; Graly, Joseph A.; Bierman, Paul R.; Reusser, Lucas J.; Pavich, Milan J.

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Year Published: 2010

Mid-Piacensian mean annual sea surface temperature: an analysis for data-model comparisons

Numerical models of the global climate system are the primary tools used to understand and project climate disruptions in the form of future global warming. The Pliocene has been identified as the closest, albeit imperfect, analog to climate conditions expected for the end of this century, making an independent data set of Pliocene conditions...

Dowsett, Harry J.; Robinson, Marci M.; Foley, Kevin M.; Stoll, Danielle K.
Mid-Piacensian mean annual sea surface temperature: an analysis for data-model comparisons; 2010; Article; Journal; Stratigraphy; Dowsett, Harry J.; Robinson, Marci M.; Foley, Kevin M.; Stoll, Danielle K.

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Year Published: 2010

Mid-Piacenzian sea surface temperature record from ODP Site 1115 in the western equatorial Pacific

Planktic foraminifer assemblages and alkenone unsaturation ratios have been analyzed for the mid-Piacen-zian (3.3 to 2.9 Ma) section of Ocean Drilling Program (ODP) Site 1115B, located in the western equatorial Pacific off the coast of New Guinea. Cold and warm season sea surface temperature (SST) estimates were determined using a modern analog...

Stoll, Danielle
Mid-Piacenzian sea surface temperature record from ODP Site 1115 in the western equatorial Pacific; 2010; Article; Journal; Stratigraphy; Stoll, Danielle

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Year Published: 2010

Modern climate challenges and the geological record

Today's changing climate poses challenges about the influence of human activity, such as greenhouse gas emissions and land use changes, the natural variability of Earth's climate, and complex feedback processes. Ice core and instrumental records show that over the last century, atmospheric carbon dioxide (CO2) concentrations have risen to 390...

Cronin, Thomas M.
Modern climate challenges and the geological record; 2010; Article; Journal; American Paleontologist; Cronin, Thomas M.

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Year Published: 2010

Rift-related volcanism and karst geohydrology of the southern Ozark Dome

This field trip examines the geology and geohydrology of a dissected part of the Salem Plateau in the Ozark Plateaus province of south-central Missouri. Rocks exposed in this area include karstified, flat-lying, lower Paleozoic carbonate platform rocks deposited on Mesoproterozoic basement. The latter is exposed as an uplift located about 40 mi...

Evans, Kevin R.; Aber, James S.; Harrison, Richard W.; Weary, David J.; Orndorff, Randall C.; Repetski, John E.; Pierce, Herbert A.; Lowell, Gary R.

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Year Published: 2010

Some notes on the geology of Cave Mountain Cave, Pendleton County, West Virginia

Swezey, C.S.; Dulong, F.T.
Some notes on the geology of Cave Mountain Cave, Pendleton County, West Virginia; 2010; Article; Journal; The West Virginia Caver; Swezey, C.S.; Dulong, F.T.