| Overton Down ： ウィキペディア英語版|
Overton Down Experimental Earthwork (often referred to simply as Overton Down) is a long-term project in experimental archaeology in Wiltshire, England. In 1960 an earthwork was built to simulate such ancient structures.〔Jewell, P. A. (ed.) 1963, ''The Experimental Earthwork on Overton Down, Wiltshire, 1960'' (British Association for the Advancement of Science). 〕 Various objects were placed in it. Since then, periodic examinations of the site have been made, providing valuable insights into taphonomy. The experiment is designed to continue for 128 years.〔Jewell, P. A. and G. W. Dimbleby, 1966, "The Experimental Earthwork on Overton Down, Wiltshire, England," ''Papers of the Prehistoric Society'' 32:313-342〕
Reports on various aspects of the site have already added significantly to the knowledge of archaeological site formation.〔Fowler, P. J. and S. W. Hillson, 1996 ''The Experimental Earthwork Project 1960-1992''〕 Early in the project's history, the complexity of stratification of degraded ditch walls and their asymmetrical character was noted and examined. The excavation after thirty-two years provided information on decay rates and patterns of deposited objects, which are of use to forensic scientists. Nonintrusive examination of the ditch has indicated that in this particular environment (exposed chalky hill), after about ten years the general appearance no longer makes rapid changes in appearance and can be considered relatively stable.〔
It is now a World Heritage Site.
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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