| 古鄱阳湖陆相盆地沉积与物源相关性特征的研究 |
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| 关键词:continental basin correlation Jurassic and Cretaceous old Poyang Lake basin |
| 基金项目:1∶5万区域地质调查项目(项目编号:20001300002051)H50E016012(田坂街幅)，H50E17012(游城幅) |
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| 摘要点击次数: 2268 |
| 全文下载次数: 2003 |
| 摘要: |
| Correlation between Source Rocks and Sedimentation of the Continental Basin of the Old Poyang Lake |
| Exemplified by the sources of the basement parent rocks and the continental basin on the northeastern margin of the old Poyang Lake, this paper deals mainly with the close correlation between source transportation and deposition procedure of the basin. The close correlation indicates that the sources of basement parent rocks have always controlled the types of basin sediments, and that the deposition of parent rocks and the patterns of weathering and erosion have determined types of sediments. The weathering and erosion of parent rocks constitute the sources of sedimentation in the basin. An analysis of continental clastic composition of the clastic rocks may reveal the type of parent rocks in sources. Researches into correlation between weathering and deposition and between erosion and accumulation make up a distinguishing feature in the study of continental basin sedimentation, which can raise the precision of stratigraphic division and also contribute to regional correlation of continental strata. During the periodical development of the continental basin, the deposition of coarse clastic rocks takes place obviously at early and late stages of the continental basin. The gravels in coarse clastic rocks can directly indicate the type of parent rocks, because they serve well as the indicators of parent rock deposition, uplifting degree and weathering and erosion patterns. It is of key importance that the study on weathering and erosion of parent rocks should be related to the continental basin deposition. |
| CAI Xiong-fei,ZHANG Ze-jun,Gu Yan-sheng.2004.Correlation between Source Rocks and Sedimentation of the Continental Basin of the Old Poyang Lake[J].Acta Geoscientica Sinica,25(3):327-330. |
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