...古地理演化；聚煤作用；正常海退；强制性海退 [gap=2113]Keywords : Ordos Basin；Carboniferous-Permian coal measures；paleogeographic evolution；coal accumulation；normal regression；forced regression ..
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depositional paleogeographic evolution 沉积古地理演化
Depositional System and Paleogeographic Evolution 鄂尔多斯盆地中南部中侏罗世延安期沉积体系及岩相古地理演化
Sedimentary facies division and paleogeographic evolution of gas-bearing intervals in lower Permian in northern Ordos basin.
鄂北下二叠统含气层段沉积相划分及古地理演化。
The process of paleogeographic evolution in this area is from land of pleistocene epoch to ingression of holocene epoch, then to littoral circumstances of today.
本区古地理的演变过程是：由更新世的陆地环境，经过全新世的海侵，变为现今的滨海环境。
Based on the sandstone compositions analysis of the Upper Triassic Xujiahe Formation in Western Sichuan Basin, the authors tried to discuss the paleogeographic evolution of the study area.
以四川盆地西部上三叠统须家河组的砂岩组分为基础，详细分析该期研究区古地理的演化。
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