Latest Quaternary Paleoclimate Reconstruction Utilizing Stable Isotopic And Trace Element Proxies In A Stalagmite From Culverson Creek Cave, West Virginia,
2010
University of Kentucky
Latest Quaternary Paleoclimate Reconstruction Utilizing Stable Isotopic And Trace Element Proxies In A Stalagmite From Culverson Creek Cave, West Virginia, Ashley Nicole Gilbert
University of Kentucky Master's Theses
A reconstruction of regional climate variability in southern West Virginia that spans the last glacial/interglacial transition is presented. Paleoclimate interpretations obtained from the 50-cm long stalagmite provide key insights regarding the timing, magnitude, and forcing mechanisms responsible for past climate variability. Stable isotopic (δ18O and δ13C) and trace element (Ba, Sr, Mg) signatures from samples contiguously milled along the growth-axis of a 230Th-dated stalagmite which grew between approximately 20 and 5 thousand years before present (kyr BP) provide critical constraints for above-cave mean annual temperature, seasonality of moisture mean annual precipitation, and potential vegetation shifts. …
Paleotsunami Inundation Of A Beach Ridge Plain: Cobble Ridge Overtopping And Interridge Valley Flooding In Seaside, Oregon, Usa,
2010
Portland State University
Paleotsunami Inundation Of A Beach Ridge Plain: Cobble Ridge Overtopping And Interridge Valley Flooding In Seaside, Oregon, Usa, Curt D. Peterson, Harry M. Jol, Thomas Horning, Kenneth M. Cruikshank
Geology Faculty Publications and Presentations
The Seaside beach ridge plain was inundated by six paleotsunamis during the last ∼2500 years. Large runups (adjusted >10m in height) overtopped seawardmost cobble beach ridges (7m elevation) at ∼1.3 and ∼2.6 ka before present. Smaller paleotsunami (6−8m in height) likely entered the beach plain interior (4-5m elevation) through the paleo-Necanicum bay mouth. The AD 1700 Cascadia paleotsunami had a modest runup (6-7mheight), yet it locally inundated to 1.5 km landward distance. Bed shear stresses (100−3,300 dyne cm−2) are estimated for paleotsunami surges (0.5−2m depths) that flowed down slopes (0.002−0.017 gradient) on the landward side of the cobble beach ridges. …
Geology Of Central Eleuthera, Bahamas: A Field Trip Guide,
2010
University of Geneva
Geology Of Central Eleuthera, Bahamas: A Field Trip Guide, Pascal Kindler, John E. Mylroie, H. Allen Curran, James L. Carew, Douglas W. Gamble, Thomas A. Rothfus
Geosciences: Faculty Publications
See other Smith authored Field Trip Guides of Gerace Research Centre.
Enigmatic Structures On Upper Pleistocene Laminar Caliche Surfaces Of The Bahamas: Animal, Vegetable, Or Mineral?,
2010
Smith College
Enigmatic Structures On Upper Pleistocene Laminar Caliche Surfaces Of The Bahamas: Animal, Vegetable, Or Mineral?, H. Allen Curran
Geosciences: Faculty Publications
Trace fossils are a common and important component of most Quaternary carbonate rock units of the Bahamas and other, similar tropical carbonate regions. In the Bahamas, the Pleistocene-Holocene boundary is typically marked by a calichified paleosol horizon that formed on the exposed limestone surfaces of the islands during the time of lowered sea level of the Last Glacial. On the north coast of San Salvador Island, an extensive horizontal surface of laminar caliche is exposed at Singer Bar Point and to the west. This surface formed on carbonate eolianite of Late Pleistocene (Eemian) age and is overlain by Holocene eolianite. …
