梁雨晨,刘自亮,陈义才,刘四兵.桂中坳陷中北部下石炭统寺门组层序与沉积相分析[J].西北地质,2020,53(2):27-41 LIANG Yuchen,LIU Ziliang,CHEN Yicai,LIU Sibing.Analysis of Sequence and Sedimentary Facies in Simen Formationin of Lower Carboniferous in the North-central Guizhong Depression[J].Northwestern Geology,2020,53(2):27-41
桂中坳陷中北部下石炭统寺门组层序与沉积相分析
Analysis of Sequence and Sedimentary Facies in Simen Formationin of Lower Carboniferous in the North-central Guizhong Depression
投稿时间:2019-10-08  修订日期:2019-12-11
DOI:10.19751/j.cnki.61-1149/p.2020.02.002
中文关键词:  桂中坳陷;石炭系;寺门组;层序地层;碎屑滨岸相;沉积模式
英文关键词:the Guizhong depression;Carbonic;Simen formation;Sequence stratigraphy;Onsh-ore-tidal flat phase;Sedimentary model
基金项目:国家重点研发计划深地资源开采专项“准噶尔盆地原型恢复”(2018YFC0604201),油气藏地质与开发工程国家重点实验室(成都理工大学)开放基金“四川盆地寒武系龙王庙组滩体结构与古海洋环境研究”(PLC20190103),中国地质调查局项目“鄂尔多斯盆地周缘中新生代地层-沉积格架与砂岩型铀矿成矿背景调查”(DD20160120-3)
作者单位E-mail
梁雨晨 成都理工大学油气藏地质及开发工程国家重点实验室, 四川 成都 610059
成都理工大学能源学院, 四川 成都 610059 
 
刘自亮 成都理工大学油气藏地质及开发工程国家重点实验室, 四川 成都 610059
成都理工大学能源学院, 四川 成都 610059 
bugliu2001@163.com 
陈义才 成都理工大学油气藏地质及开发工程国家重点实验室, 四川 成都 610059
成都理工大学能源学院, 四川 成都 610059 
 
刘四兵 成都理工大学油气藏地质及开发工程国家重点实验室, 四川 成都 610059
成都理工大学能源学院, 四川 成都 610059 
 
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中文摘要:
      通过对桂中坳陷中北部下石炭统寺门组水源塘现剖面、中渡长盛剖面等20条野外露头剖面和东塘1井等钻井岩心资料的详细观察,结合岩石薄片、粒度分析及前人研究等资料,对研究区寺门组碎屑岩沉积相类型及沉积演化特征进行了深入研究。研究表明:①桂中坳陷中北部寺门组可划分出1个三级旋回,4个四级旋回。②寺门组广泛发育碎屑滨岸相沉积,发育潮坪亚相沉积,局部地区发育有泻湖亚相沉积。砂坪微相沉积主要发育在环江以北、柳州以东地区,混积坪微相全区较为发育;泥坪微相主要发育在南丹以西、宜州周缘、柳城以北和象州周缘等地;泻湖亚相主要发育在柳州地区。③下石炭统晚期研究区寺门组发育一种沉积模式,区内广泛发育滨岸相。研究结果揭示研究区寺门组沉积演变规律,为油气资源勘探提供地质依据。
英文摘要:
      Based on the detailed observation of 20 field outcrop profiles of Shuiyuan Tangxian bisect and Zhongdu Changsheng bisect, and the data of the borehole of Dongtang 1 in the north-central Guizhong depression, this paper, combined with the data of rock sheet, granularity analysis and previous studies, researches the types and its evolution characteristics of the clastic rocks sedimentary facies in the research area. The results show that:①The Simen formation can be divided into one third-order cycles of sedimentation and four fourth-order cycles of sedimentation in the north-central Guizhong depression.②Clastic onshore-tidal flat deposits are widely developed in the Simen formation. There are some lagoon microfacies deposits in some areas. The Shaping microsedimentary deposits are mainly developed in the north of Huanjiang and east of Liuzhou. The microfacies of the Hunjiping is more developed in the whole area. The Niping microfacies is mainly developed in the west of Nandan, the periphery of Yizhou, the north of Liucheng and the edge of Xiangzhou.③In the late Lower Carboniferous, a sedimentary model has been developed in Simen formation of the study area,the onshore-tidal flat phase being widely developed. The above studies revealed the sedimentary evolution rule of Simen formation and meanwhile provided a geological basis for oil-gas exploration.
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