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da long kou di qu cang fang gou qun de chen ji huan jing ji qi yan hua
Author(s): 
Pages: 31-38+89
Year: Issue:  1
Journal: Oil & Gas Geology

Keyword:  冲积扇河流相河流演化沉积环境仓房沟群;
Abstract: 仓房沟群(P2-T1)发育于准噶尔盆地的东部,厚1000m士,由冲积扇、曲流河、低弯度河、网状河和湖泊相组成。沉积特征和变化反映了气候逐渐干旱、植物逐渐稀少和周期性活动的构造背景。气候和构造的变化导致沉积环境的演化,曲流河演化到低弯度河是由温暖、潮湿的气候和植物丰富的自然环境演化到炎热、半干旱的气候和极少或无植物环境的过程。随着物源区抬升,低弯度河网状化,发育楔状网状河相。
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