Characteristics of Fine-grained Sedimentary Rocks in Taerlang Formation, Daheyan Area, Turpan-Hami Basin
doi: 10.14027/j.cnki.cjxb.2017.04.005
Funds:
National Natural Science Foundation of China, No. 41072164
- Received Date: 2016-06-08
- Rev Recd Date: 2016-08-30
- Publish Date: 2017-08-10
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Key words:
- fine-grained sedimentary rocks /
- lithofacies features /
- sedimentary structure /
- Daheyan area
Abstract: With the technologies of field outcrop section description, identification of thin sections, whole rock X-ray diffraction(XRD)analysis and trace element analysis, researchers have studied mineral components, sedimentary structures, rock types and sedimentary environment of fine-grained sedimentary rocks in Taerlang Formation, Daheyan Area. The results reveal that fine-grained sedimentary rocks are mainly composed of quartz and calcite, and still contain a small amount of feldspar and clay minerals. The types of sedimentary structures contain normal graded bedding, flaser bedding, cross-beddings structure under the strong hydrodynamic and laminated structures under static water environment. It develops carbonate rocks, felsic rocks and fine-grained mixed rocks, and it is divided into 5 types of lithofacies based on factors of color, mineral composition and sedimentary structure, including grey thin-layered mixed fine-grained lithofacies, deep-black laminated clay lithofacies, grey laminated mixed fine-grained lithofacies, grey thin-layered siltstone lithofacies, and off-white laminated limestone lithofacies. The period of fine-grained sedimentary rocks was warm and humid, which belong to quiet, reductive, semi-salt and salt basin.
| Citation: | XU XiWang, CHEN ShiYue, WANG Yue, ZHANG GuanLong, YAN JiHua, WANG YuXin, LI Jia, DENG Yuan. Characteristics of Fine-grained Sedimentary Rocks in Taerlang Formation, Daheyan Area, Turpan-Hami Basin[J]. Acta Sedimentologica Sinica, 2017, 35(4): 705-713. doi: 10.14027/j.cnki.cjxb.2017.04.005
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