Florence Bascom Geoscience Center

Publications

Filter Total Items: 522
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Year Published: 2010

Did intense volcanism trigger the first Late Ordovician icehouse?

Oxygen isotopes measured on Late Ordovician conodonts from Minnesota and Kentucky (United States) were studied to reconstruct the paleotemperature history during late Sandbian to Katian (Mohawkian–Cincinnatian) time. This time interval was characterized by intense volcanism, as shown by the prominent Deicke, Millbrig, and other K-bentonite beds. A...

Buggisch, Werner; Joachimski, Michael M.; Lehnert, Oliver; Bergström, Stig M.; Repetski, John E.; Webers, Gerald F.
Did intense volcanism trigger the first Late Ordovician icehouse?; 2010; Article; Journal; Geology; Buggisch, Werner ; Joachimski, Michael M.; Lehnert, Oliver ; Bergström, Stig M.; Repetski, John E.; Webers, Gerald F.

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Year Published: 2010

Geologic characteristics and movement of the Meadow Creek landslide, part of the Coal Hill landslide complex, western Kane County, Utah

The Meadow Creek landslide, part of the Coal Hill landslide complex in western Kane County, Utah, is about 1.7 miles (2.7 km) wide and 1.3 miles (2.1 km) long and contains six smaller historical slides. The upper part of the Meadow Creek landslide is gently sloping and consists of displaced and back-rotated blocks of Cretaceous Dakota and Cedar...

Carney, Stephanie M.; Tabet, David E.; Johnson, Cari L.; Ashland, Francis X.; McDonald, Greg N.
Geologic characteristics and movement of the Meadow Creek landslide, part of the Coal Hill landslide complex, western Kane County, Utah; 2010; Article; Other Government Series; Utah Geological Association Publication 39: Geology of South-Central Utah; Ashland, Francis X.; McDonald, Greg N.

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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

Inside the crater, outside the crater: Stratigraphic details of the margin of the Chesapeake Bay impact structure, Virginia, USA

Two cores at the outer margin of the Chesapeake Bay impact structure show significant structural and depositional variations that illuminate its history. Detailed stratigraphy of the Watkins School core reveals that this site is outside the disruption boundary of the crater with respect to its...

Edwards, Lucy E.; Powars, David S.; Horton, J. Wright; Gohn, Gregory; Self-Trail, Jean M.; Litwin, R.J.

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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

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

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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.; Mulvey, Brian; Southworth, C. Scott