摘要
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,
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.
