Primary dolostone related to the Cretaceous lacustrine hydrothermal sedimentation in Qingxi sag, Jiuquan Basin on the northern Tibetan Plateau： Discussion

Recently, a mechanism of hydrothermal sedimentation about a mantel-derived source was proposed to interpret the formation of lacustrine dolostone in the Cretaceous Xiagou Formation based on systematic petrological, mineralogical, and geochemical analyses （Wen et al., 2013）. Similar to the texture fo...

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Bibliographic Details
Published in:Science China. Earth sciences 2016-04, Vol.59 (4), p.866-870
Main Authors: Li, Le, Yao, GuangQing
Format: Article
Language:English
Subjects:
Analysis
Cretaceous
Discussion
Earth and Environmental Science
Earth Sciences
Freshwater
Geochemistry
Sedimentation
Sediments
地球化学分析
湖相白云岩
热水沉积
热液沉积物
白垩系
酒泉盆地
青藏高原北部
青西凹陷
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Summary:Recently, a mechanism of hydrothermal sedimentation about a mantel-derived source was proposed to interpret the formation of lacustrine dolostone in the Cretaceous Xiagou Formation based on systematic petrological, mineralogical, and geochemical analyses （Wen et al., 2013）. Similar to the texture found in classic hydrothermal sediments （Zhang, 1988）, the breccia texture is characterized by certain hydro- thermal sedimentation features. With detailed analysis of the data and relevant explanations, however, we found that their data are not sufficient to support the mantle-derived hydrothermal genetic theory because the formation of ex- tensive laminated micritic ferruginous dolostone is not yet fully understood. We will review the model proposed by Wen et al. （2013） focusing on the following issues.
ISSN:1674-7313
1869-1897
DOI:10.1007/s11430-016-5262-3