| 摘要: |
| 重庆石柱中三叠统巴东组有3种主要岩相类型:①紫红、灰绿色泥页岩,②褐黄、紫红、灰褐色岩屑石英砂岩,③浅灰色碳酸盐岩;并见有水平层理、平行层理、沙纹层理、板状交错层理等层理构造;划分出障壁海岸相,以及潮坪亚相、湖亚相和5种微相;建立了沉积相序,指出海平面变化对该区巴东期沉积物类型起着控制作用。 |
| 关键词: 石柱 中三叠统 巴东组 沉积相 重庆 |
| DOI： |
| 附件 |
| 投稿时间：2006-09-05 |
| 基金项目: |
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| Sedimentary facies in the Middle Triassic Badong Formation in Shizhu, Chongqing |
| XU Sheng-lin, CHEN Hong-de, ZHU Li-dong, LIN Liang-biao |
| (Research Institute of Sedimentary Geology, Chengdu University of Technology, Chengdu 610059, Sichuan, China) |
| Abstract: |
| Three types of lithofacies are recognized for the Middle Triassic Badong Formation in Shizhu, Chongqing, including:① purplish red and grayish green mudstone and shale;② brownish yellow, purplish red and grayish brown lithic quartz sandstone, and ③ light grey carbonate rocks. The bedding structures include horizontal bedding, parallel bedding, ripple bedding and tabular cross-bedding. Sedimentary facies types are separated into the barrier coastal facies, tidal-flat and lagoon subfacies and five microfacies, and sedimentary facies sequences are also constructed. The sea-level changes during the deposition of the Badong Formation exercised a major control on the Badongian sediment types in the study area. |
| Key words: Shizhu Middle Triassic Badong Formation sedimentary facies Chongqing |
