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Sedimentary Environments and Coal Accumulation of the Baojishan-Honghui Basin, Eastern Qilian Mountains
Author(s): 
Pages: 622-631
Year: Issue:  4
Journal: Acta Sedimentologica Sinica

Keyword:  沉积体系成煤环境聚煤规律侏罗纪盆地祁连山;
Abstract: 位于祁连山东段的宝积山-红会盆地是一个典型的侏罗纪沉积盆地,侏罗纪煤系由冲积扇沉积体系,经过河流、湖泊三角洲沉积体系向湖泊沉积体系过渡的沉积序列组成,并充填于印支运动后的裂陷盆地内.盆地活动断裂边界的内侧发育冲积扇裙,向着不活动边缘的另一侧,逐渐被河流沉积体系和湿地沼泽系统替代.扇前湿地是主要聚煤场所,形成的煤层层数少,主煤层厚度变化大,煤体呈简单指状.扇前湿地泥炭沼泽具有富滋养或低位性质,形成的...
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