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Saltville (archaeological site) : ウィキペディア英語版 | Saltville (archaeological site) Saltville Archaeological Site SV-2 an apparent Pre-Clovis archaeological site located in the Saltville Valley near Saltville, Virginia.〔Goodyear. A. C., III. 2004: Evidence of Pre-Clovis Sites in the Eastern United States. In Paleoamerican Origins: Beyond Clovis, pp. 103-12. Center for the Study of the First Americans, Texas A&M University, College Station.〕 The site was excavated from 1992 to 1997 by paleogeographer Jerry N. McDonald of the Virginia Museum of Natural History. The Saltville Valley today is located in the valley and ridge province of the Appalachian Mountains near southwest Virginia.〔 The valley is shaped like a scalene triangle, and it measures in elevation 1740’/530 m above sea level, 8000’/2.4 km lengthwise, and 2750’/0.84 km at its greatest width. Over 20 percent of the valley is submerged in standing water due to industrial mining of salt brine from the late 19th century to the early 20th century.〔McDonald, J. N. 2000: An outline of the pre-Clovis archaeology of SV-2, Saltville, Virginia, with special attention to a bone tool dated 14,510 yr BP. Jeffersoniana 9, 1–59.〕 Site SV-2 is located in the south western part of the Saltville Valley by the northern edge of an artificial reservoir established by the Olin Mathieson Chemical Corporation from 1964-1965.〔 ==Background== The southern and eastern boundaries of the Saltville Valley are located near the Saltville Thrust Fault, and the northwestern areas are bordered by the Upper Mississippian Little Valley, Hillsdale, and Ste. Genevieve/Gasper limestones.〔 The valley rests on the Upper Mississippian Maccrady Formation, an erratic sequence of shales, siltstones, and minor sandstones that possesses limestones that integrate considerable amounts of gypsum, anhydrite, and halite.〔 Prior to 13,500 RCYBP in late Pleistocene times, the valley contained a river which subsequently transformed into a lake. This phenomenon sealed the bottom of the valley with mud and produced environmental conditions conducive to the preservation of late glacial fauna and flora.〔 The lake has been dubbed Lake Totten, and was created as a result of an increased flow volume from the lower part of the Saltville River that previously ran through the valley. Explanations for this include increased rain, and the upper Saltville River being pirated by the lower McHenry Creek. The subsequent blockage of the Saltville gap emptied the Saltville River into the North Fork of the Holston River.〔 After the formation of Lake Totten, colluvial sediments intensively flowed periodically into the shallow water north of the site, and eventually the reduction of the lake exposed lacustrine mud.〔 This accounts for a one-meter thick alluvial, colluvial, and lacustrine sediments overlying a pedestal of bedrock spanning 5,000 years from 14,510 to 13,000 RCYBP in the late Pleistocene〔
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