A review of the aminostratigraphy of Quaternary mollusks from United States Atlantic Coastal Plain sites

1988 ◽  
Author(s):  
John F. Wehmiller ◽  
Daniel F. Belknap ◽  
Brian S. Boutin ◽  
June E. Mirecki ◽  
Stephen D. Rahaim ◽  
...  
Keyword(s):  
United States ◽  
Coastal Plain ◽  
Atlantic Coastal Plain ◽  
Atlantic Coastal

The Carolina Sandhills: Quaternary eolian sand sheets and dunes along the updip margin of the Atlantic Coastal Plain province, southeastern United States

2016 ◽  
Vol 86 (3) ◽  
pp. 271-286 ◽  
Author(s):  
Christopher S. Swezey ◽  
Bradley A. Fitzwater ◽  
G. Richard Whittecar ◽  
Shannon A. Mahan ◽  
Christopher P. Garrity ◽  
...  
Keyword(s):  
United States ◽  
Grain Size ◽  
Coastal Plain ◽  
Southeastern United States ◽  
Atlantic Coastal Plain ◽  
Laurentide Ice Sheet ◽  
Coarse Grain ◽  
Eolian Sand ◽  
Atlantic Coastal ◽  
Sand Sheets

AbstractThe Carolina Sandhills is a physiographic region of the Atlantic Coastal Plain province in the southeastern United States. In Chesterfield County (South Carolina), the surficial sand of this region is the Pinehurst Formation, which is interpreted as eolian sand derived from the underlying Cretaceous Middendorf Formation. This sand has yielded three clusters of optically stimulated luminescence ages: (1) 75 to 37 thousand years ago (ka), coincident with growth of the Laurentide Ice Sheet; (2) 28 to 18 ka, coincident with the last glacial maximum (LGM); and (3) 12 to 6 ka, mostly coincident with the Younger Dryas through final collapse of the Laurentide Ice Sheet. Relict dune morphologies are consistent with winds from the west or northwest, coincident with modern and inferred LGM January wind directions. Sand sheets are more common than dunes because of effects of coarse grain size (mean range: 0.35-0.59 mm) and vegetation. The coarse grain size would have required LGM wind velocities of at least 4-6 m/sec, accounting for effects of colder air temperatures on eolian sand transport. The eolian interpretation of the Carolina Sandhills is consistent with other evidence for eolian activity in the southeastern United States during the last glaciation.

scholarly journals Fate of the other redcoat: remnants of colonial British foxes in the eastern United States

2015 ◽  
Vol 97 (1) ◽  
pp. 298-309 ◽  
Author(s):  
Adrienne E. Kasprowicz ◽  
Mark J. Statham ◽  
Benjamin N. Sacks
Keyword(s):  
United States ◽  
Coastal Plain ◽  
Red Fox ◽  
Hudson River ◽  
Atlantic Coastal Plain ◽  
Population Increase ◽  
Eastern United States ◽  
Red Foxes ◽  
Atlantic Coastal ◽  
Natural Population Increase

Abstract Red foxes were absent or rare in the southeastern United States until the late 1800s. Their origins potentially include natural population increase/expansion, translocations from Europe, and, eventually, 20th century fur farming. Previous studies have found no European haplotypes in North America, but few samples were sourced from the Atlantic coastal plain, closer to the source of putative introductions. Through analysis of mitochondrial DNA in 584 red foxes from this region, we identified indigenous haplotypes in ≥ 35% of foxes, 1 of 2 European haplotypes in 17% of foxes and fur farm haplotypes in ≥ 13% of foxes; another 35% of foxes had haplotypes potentially indigenous or native. In contrast, only 3 of 135 (2%) male foxes carried a single European Y chromosome haplotype. Most European and fur farm haplotypes were found near the densely human-populated coastal plain and Hudson River lowlands; most red foxes of the Appalachians and Piedmont had native eastern haplotypes. Our findings suggest that the more remote, upland populations primarily reflect indigenous red fox matrilines, whereas urban-associated populations in and around the mid-Atlantic coastal plain and Hudson lowlands reflect an admixture of native and nonnative maternal sources. Autosomal markers are needed to further elucidate the extent of European and fur farm introgression in the Appalachians and further west.

Pleistocene refuge areas and postglacial dispersal of copepods of the northeastern United States

1995 ◽  
Vol 52 (10) ◽  
pp. 2197-2210 ◽  
Author(s):  
Richard S. Stemberger
Keyword(s):  
United States ◽  
Coastal Plain ◽  
Distribution Patterns ◽  
High Elevation ◽  
Atlantic Coastal Plain ◽  
Temporary Ponds ◽  
Mississippi Valley ◽  
Northeastern United States ◽  
Freshwater Copepods ◽  
Atlantic Coastal

The distribution of common freshwater copepods of the northeastern United States has a marked association with major meltwater drainage systems and coastal marine submergence zones formed during the retreat of the Wisconsinan ice sheet. Postglacial dispersal routes inferred from the deglaciation chronology indicate that zooplankton could have come from several major Pleistocene refuges in the Mississippi Valley, Appalachian Plateaus, and mid-Atlantic Coastal Plain, and from northern locations on the Atlantic Coastal Plain. Contemporary distribution patterns suggest that some species of copepods dispersed primarily in surface waters during advances and retreats of continental glaciers. These include species of the calanoid Skistodiaptomus and the cyclopoid Diacyclops thomasi that occur in coastal lowlands and in lower elevation lakes in mountainous areas that could be flooded by retreating ice-front lakes. There is little evidence, except for inadvertent introductions through human activities, that these species have expanded beyond their original postglacial dispersal boundaries. In contrast, other calanoid and cyclopoid species were widely distributed and are dominant in high-elevation lakes and lowland lakes behind mountain barriers unreachable by species dependent on water transport. These species commonly occur in permanent and temporary ponds and may produce dormant stages that are readily dispersed.

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