Florence Bascom Geoscience Center

Publications

Filter Total Items: 349
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Year Published: 2010

Tectonics of the Maryland Piedmont along the Potomac River; insight since 1960 and potential transfer to the Pennsylvania Piedmont

This is a summary of a half century of research in the Mary land Piedmont and how it may or may not have implications for the Piedmont of Pennsylvania. Much of the field mapping and all of the isotopic analyses of rocks and minerals of the Maryland Piedmont have been conducted since the 1960 Field Conference of Pennsylvania Geologists “Some...

Wise, Donald U.; Fleeger, Gary M.; Southworth, C. Scott
Tectonics of the Maryland Piedmont along the Potomac River; insight since 1960 and potential transfer to the Pennsylvania Piedmont; 2010; Article; Conference publication; Tectonics of the Susquehanna Piedmont in Lancaster, Dauphin, and York Counties, Pa.: proceedings of a symposium associated with the 75th Field Conference of Pennsylvania Geologists, Lancaster, Pa., September 23, 2010; Southworth, C. Scott

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Year Published: 2010

Climate change lessons from a warm world

In the early 1970’s to early 1980’s Soviet climatologists were making comparisons to past intervals of warmth in the geologic record and suggesting that these intervals could be possible analogs for 21st century “greenhouse” conditions. Some saw regional warming as a benefit to the Soviet Union and made comments along the lines of “Set fire to the...

Dowsett, Harry J.

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Year Published: 2010

The PRISM3D paleoenvironmental reconstruction

The Pliocene Research, Interpretation and Synoptic Mapping (PRISM) paleoenvironmental reconstruction is an internally consistent and comprehensive global synthesis of a past interval of relatively warm and stable climate. It is regularly used in model studies that aim to better understand Pliocene climate, to improve model performance in future...

Dowsett, H.; Robinson, M.; Haywood, A.M.; Salzmann, U.; Hill, Daniel; Sohl, L.E.; Chandler, M.; Williams, Mark; Foley, K.; Stoll, D.K.
The PRISM3D paleoenvironmental reconstruction; 2010; Article; Journal; Stratigraphy; Dowsett, H.; Robinson, M.; Haywood, A.M.; Salzmann, U.; Hill, Daniel; Sohl, L.E.; Chandler, M.; Williams, Mark; Foley, K.; Stoll, D.K.

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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

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.