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Carlston Annis Shell Mound
The Carlston Annis Shell Mound (designated 15 BT 5) is a prominent archaeological site in the western part of the U.S. state of Kentucky. Located along the Green River in Butler County, this shell midden has been declared a historic site because of its archaeological value.
==Geography==
The Carlson Annis Shell Mound sits on the eastern side of the Green River, somewhat more than east of the shoreline. Because it lies in the river's floodplain, the mound is the highest point in the area; its top is typically dry even though the surrounding terrain be flooded. It occupies a dark loamy soil, although the edges of the mound are covered by a substantially lighter loam with mixtures of sand and clay.〔Webb, William S. "The Carlson Annis Mound: Site 5 Butler County Kentucky". ''University of Kentucky Reports in Anthropology'' 7.4 (1950): 265-354.〕 Since the mound was formed, the river has changed its course; it appears to have flowed directly by the base of the mound as it was being created.〔 When the area was first settled in the early nineteenth century, the floodplain was recognized as valuable farmland, and because the mound is an island during floods, settlers saw it as a place of refuge; for most of the time since whites arrived, farmsteads have occupied its summit.〔
Measuring approximately from north to south and east to west, the mound rises approximately above the surrounding terrain. The shells extend down from the surface by from the center; the difference between the heights is the result of floods since the midden was created, which have deposited multiple layers of earth around the base.〔
抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』
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