翻訳と辞書 Words near each other ・ Duri, New South Wales ・ Duri-Tangerang railway ・ Duria Antiquior ・ Durian ・ Durian (disambiguation) ・ Durian Burung ・ Durian Durian ・ Durian River ・ Durian Tunggal ・ Durian Tunggal Reservoir ・ Durianella ・ Duriankere language ・ Durianluncuk ・ Duriatitan ・ Duriavenator ・ Duricrust ・ Duridan ・ Duridanov Peak ・ Durie ・ Durie Kallahal ・ Duriel Harris ・ Duriense VR ・ Durieu ・ Durieu, British Columbia ・ Durieux ・ Duriez ・ Durif ・ Duriga ・ Durihana ・ Durijan Dictionary Lists mini英和辞書 mini和英辞書 Webster 1913 Latin-English FOLDOC Wikipedia English ウィキペディア

翻訳と辞書　辞書検索 [ 開発暫定版 ] スポンサード リンク Duricrust ： ウィキペディア英語版 Duricrust Duricrust is a hard layer on or near the surface of soil. Duricrusts can range in thickness from a few millimeters or centimeters to several meters. It is a general term (not to be confused with duripan) for a zone of chemical precipitation and hardening formed at or near the surface of sedimentary bodies through pedogenic and (or) non-pedogenic processes. It is typically formed by the accumulation of soluble minerals deposited by mineral-bearing waters that move upward, downward, or laterally by capillary action, commonly assisted in arid settings by evaporation.〔Dixon, 1994〕〔Woolnough, 1930〕〔NADMSC SLTT, 2004〕 Minerals often found in duricrust include silica, iron, calcium, and gypsum. Duricrusts need to be formed in absolute accumulation, therefore they must have a source, transfer and precipitation. Duricrust is often studied during missions to Mars because it may help prove the planet once had more water. Duricrust was found on Mars at the Viking 2 landing site, and a similar structure, nicknamed "Snow Queen," was found under the Phoenix landing site. Phoenix's duricrust was later confirmed to be water-based. ==See also== *caliche 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「Duricrust」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.