Study on Early Cretaceous Lithofacies Paleogeography in Dasanjiang Area of Northeast China
详细信息
- 责任者：Ji Hancheng (School of Geosciences ; China University of Petroleum ; Beijing 102249 ; China) ; Men Xiangyong
- 刊名：Journal of Earth Sciences and Environment
- 出版年：2013
- 卷期：35(2)
- 关键词：岩相古地理 ; lithofacies paleogeography ; 三江平原 ; Sanjiang Plain
- 页码：p.81-91
- 图表：illus., 1 table, 29 refs.
- 分类号：0803
- issnNo：ISSN1672-6561
- isbnNo：CN61-1423/P
摘要
According to field observation,analysis of cores,logging and seismic data,sedimentary facies of Early Cretaceous Muling Formation and Chengzihe Formation in Dasanjiang area of Northeast China was conducted;sedimentary feature and temporal-spatial distribution of each sedimentary facies belt were summarized,and then lithofacies paleogeography maps of Muling Formation and Chengzihe Formation were drawn up.The results showed that types of sedimentary facies in Muling Formation and Chengzihe Formation were rich,shallow-water sedimentary including shore shallow lacustrine and delta plain was predominant with a little coal beds,with swamp facies and marine interlayers;fan delta and braided river existed in the margin of palaeohigh,and changed to shore shallow lacustrine and semi-deep lake from the margin to the depocenter of the basin.Fan delta deposit developed around Tangyuan rift during the sedimentary period of Chengzihe Formation,delta and shore shallow lacustrine were the main sedimentary facies in Suibin rift and Qianjin rift,and semi-deep lake,marine interlayer and swamp deposit developed partially;delta and shore shallow lacustrine were the main sedimentary facies in JixiBasin and Boli Basin,and shore shallow lacustrine deposit developed in Hulin Basin,and semi-deep lake,marine interlayer and swamp deposit developed partially;fan delta deposit developed around Tangyuan rift during the sedimentary period of Muling Formation,the strata in Suibin rift and Qianjin rift developed insignificantly,delta and shore shallow lacustrine were the main sedimentary facies in Jixi Basin and Boli Basin,and semi-deep lake,marine interlayer and swamp deposit developed partially,while shore shallow lacustrine was the main sedimentary facies in the southern sag of Hulin Basin.Zhangguangcai Mountain and Huanan uplift were the major material source of the basin during the sedimentary period of Early Cretaceous Chengzihe Formation and Muling Formation.
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