The Deformation Features of Quartz Grains in the Sandstone of Taihu Area: Taihu Impact Origin Controversy

详细信息   

• 责任者：Dong Yujie (State Key laboratory for Mineral Deposits Research ; School of Earth Sciences and Engineering ; Nanjing University ; Nanjing 210093 ; China) ; Xie Zhidong
• 刊名：Geological Journal of China Universities
• 出版年：2012
• 卷期：18(2)
• 页码：p.395-403
• issnNo：ISSN1006-7493
• isbnNo：CN32-1440/P

摘要

The hypothesis of impact origin is one of many origin hypotheses of Tai Lake Basin, which were proposed in twenty years ago and revived in 2009 with many opposite arguments. The goal of this paper is to review and check the similar previous work having been done in twenty years ago based on current observation of the deformation features in quartz grains, and to discuss the Taihu impact hypothesis. The results show that the quartz deformed lamella of sandstone of Taihu area are not typical impact-induced planar deformation features （PDF）. Most of the deformation features are caused by relatively lower pressure, the origin of these deformation features can be explained by multiple forces.