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| Keywords | |
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Qinghai Province |
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Saipuduogangri |
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Quemocuo Formation |
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granularity characteristics |
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sedimen- tary environment |
| Authors | |
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QU Yuan-Xin |
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SUN Guo-Sheng |
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XU Zhong-Jie |
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ZHANG Jian-Ze |
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WANG Chun-Guang |
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SU Rong |
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WANG Gang |
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LI Dong |
| PubMed | |
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Article by Qu, Y. X. |
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Article by Sun, G. S. |
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Article by Hu, Z. J. |
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Article by Zhang, J. Z. |
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Article by Wang, C. G. |
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Article by Su, R. |
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Article by Wang, G. |
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Article by Li, D. |
Characteristic of granularity of Quemocuo Formation in Saiduopugangri region of Qinghai and its sedimentary environment
QU Yuan-Xin, SUN Guo-Sheng, XU Zhong-Jie, ZHANG Jian-Ze, WANG Chun-Guang, SU Rong, WANG Gang, LI Dong
1. College of Earth Sciences��Jilin University��Changchun 130061��China; 2. ��egional Geological and Mineral ��esources Survey of Jilin Province��Changchun 130022��China; 3. Chinese Academy of Science��Institute of Earth Environment��Xi'an 710061��China
In Saiduopugangri region of northern Qiangtang Basin��the Quemocuo Formation of lower Jurassic Yanshiping Group is widely exposed�� The formation mainly consists of a set of clastic rocks intercalated with car- bonate rocks�� The clastic recks are sandstone and siltstone�� The granularity analysis of Quemocuo Formation reflects that rock components are made up of jumping components and suspending components�� and the former is main com- ponents��indicating that the separation of samples is good�� Finally�� the authors consider that the overall depositional environment of Quemocuo Formation shows delta facies��in which the main facies are the desposit of sandstone and siltstone of delta- front facies��and the main types of sandstone are detritus sandstone��arkose and quartz sandstone�� The lower member of the formation shows the delta- front facies which are near the prodelta�� while the upper member of the formation shows the delta- front facies which are near the delta plain facies��