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翻訳と辞書　辞書検索 [ 開発暫定版 ] スポンサード リンク Head (geology) ： ウィキペディア英語版 Head (geology) Head describes deposits consisting of fragmented material which, following weathering, have moved downslope through a process of solifluction. The term has been used by British geologists since the middle of the 19th century to describe such material in a range of different settings from flat hilltops to the bottoms of valleys.〔Melville , R.V. and Freshney, R.C. 1982 ''British Regional Geology: the Hampshire Basin and adjoining areas'' 4th edn Institute of Geological Sciences p125 ISBN 011884203X〕 Areas identified as head include deposits of aeolian origin such as blown sand and loess, slope deposits such as gelifluctates and solifluctates, and recently eroded soil material, called colluvium. With geologists becoming more interested in studying the near-surface environment and its related processes, the term head is becoming obsolete. A related term is 'combe (or coombe) rock', descriptive of a body of chalk and flint fragments contained within a mass of chalky earth typically found on the chalk downlands of south-east England and resulting from freeze-thaw processes. Where the mass is also soliflucted, it is considered a variety of head.〔Whitten, D.G.A. and Brooks, J.R.V. 1972 ''The Penguin Dictionary of Geology'' ISBN 0140510494〕〔Melville , R.V. and Freshney, R.C. 1982 ''British Regional Geology: the Hampshire Basin and adjoining areas'' 4th edn Institute of Geological Sciences p125 ISBN 011884203X〕 ==References== 抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』 ■ウィキペディアで「Head (geology)」の詳細全文を読む スポンサード リンク 翻訳と辞書 : 翻訳のためのインターネットリソース Copyright(C) kotoba.ne.jp 1997-2016. All Rights Reserved.