| 摘要: |
| 笔者对腮林忽洞组的岩石地层特征、层序地层、生物(叠层石)地层进行了深入研究。将腮林忽洞组划分为4个岩性段、7个三级层序;根据叠层石组合特征,建立了3个叠层石组合;结合前人获得的两件同位素年龄(207Pb/204Pb)数据,认为腮林忽洞组的时代应归属中元古代长城纪-蓟县纪。 |
| 关键词: 腮林忽洞组 叠层石组合 层序地层 长城纪-蓟县纪 达茂旗 |
| DOI： |
| 附件 |
| 投稿时间：2012-10-12修订日期：2012-10-30 |
| 基金项目: |
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| Discussions on the stratigraphy and ages of the Sailinhudong Formation in the Damaoqi region, Inner Mongolia |
| LIU Ao-ran, HE Kai, TIAN Li-fu |
| (Shijiazhuang University of Economics, Shijiazhuang 050031, Hebei, China) |
| Abstract: |
| The present paper gives a detailed discussion about the lithostratigraphy, sequence stratigraphy and biostratigraphy (stromatolitic stratigraphy) of the Sailinhudong Formation in the Damaoqi region, Inner Mongolia, and separates the Sailinhudong Formation into four lithological members, seven third-order sequences and three stromatolitic assemblages. According to the existing 1:50 000 regional geological survey and mineral exploration, in reference to the previous data, especially the isotopic ages of 1456±69 Ma and 1283±59 Ma, the authors in this study contend that the Sailinhudong Formation should be traced back to the Changchengian to the Jixianian of the Mesoproterozoic. |
| Key words: Sailinhudong Formation stromatolitic assemblage sequence stratigraphy ChangchengianJixianian Damaoqi |
