DOI: 10.5194/cp-11-1-2015
Scopus记录号: 2-s2.0-84920287733
论文题名: Thenardite after mirabilite deposits as a cool climate indicator in the geological record: Lower Miocene of central Spain
作者: Herrero M.J. ; Escavy J.I. ; Schreiber B.C.
刊名: Climate of the Past
ISSN: 18149324
出版年: 2015
卷: 11, 期: 1 起始页码: 1
结束页码: 13
语种: 英语
Scopus关键词: economic analysis
; economic geology
; environmental conditions
; mineral deposit
; Miocene
; paleoclimate
; Iberian Peninsula
; Tagus Basin
; Mammalia
英文摘要: Salt deposits are commonly used as indicators of different paleoclimates and sedimentary environments, as well as being geological resources of great economic interest. Ordinarily, the presence of salt deposits is related to warm and arid environmental conditions, but there are salts, like mirabilite, that form by cooling and a concentration mechanism based on cooling and/or freezing. The diagenetic transformation of mirabilite into thenardite in the upper part of the lower Miocene unit of the Tajo basin (Spain) resulted in the largest reserves of this important industrial mineral in Europe. This unit was formed in a time period (∼18.4 Ma) that, in other basins of the Iberian Peninsula, is characterized by the existence of particular mammal assemblages appropriate to a relatively cool and arid climate. Determining the origin of the thenardite deposits as related to the diagenetic alteration of a pre-existing mirabilite permits the establishment and characterization of the sedimentary environment where it was formed and also suggests use as a possible analog with comparable deposits from extreme conditions such as Antarctica or Mars. © 2015 Author(s) . Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/49191
Appears in Collections: 气候变化与战略
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Recommended Citation:
Herrero M.J.,Escavy J.I.,Schreiber B.C.. Thenardite after mirabilite deposits as a cool climate indicator in the geological record: Lower Miocene of central Spain[J]. Climate of the Past,2015-01-01,11(1)