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| STRATIGRAPHIC SEQUENCE OF TUCHENGZI FORMATION IN JINLINGSI-YANGSHAN BASIN, WESTERN LIAONING PROVINCE |
| XING De-he1, SUN Chun-lin2, SUN Yue-wu2, ZHANG Li-dong1, GUO Sheng-zhe1, ZHANG Chang-jie1, PENG Yan-dong1, JIA Bin1, CHEN Shu-wang1, DING Qiu-hong1 |
1. Shenyang Institute of Geology and Mineral Resources, Shenyang 110033, China;
2. School of Earth Sciences, Jilin University, Changchun 130061, China |
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Abstract The Tuchengzi formation in Jinlingsi-Yangshan basin, Western Liaoning Province is composed of a series of red continental detrital rocks. Stratigraphic sequence can be recognized by the vertical superimposition regularities of strata and the features of unconformity interfaces. Three Order Ⅲ and 14 Order Ⅳ sequences of cycles are divided, as well as corresponding sedimentary system. The regular superimposition of the sedimentary system formed the sediment sequence of three cycles of lake expansion-contraction in Tuchengzi age. The top and bottom of the sequence are clearly bordered by unconformity surfaces. With the division and correlation of the sequence of cycles, a framework for the stratigraphic sequence of Tuchengzi formation in Jilingsi-Yangshan basin is established. This is a help to reveal the evolution of the basin in Tuchengzi age, Upper Jurassic, Mesozoic.
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Received: 08 October 2005
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2006, Vol. 15 
