漠河盆地中侏罗统沉积特征研究及其地质意义  

On sedimentary characteristics and its geological implications in middle Jurassic in Mohe Basin

作　　者：李健[1] 张霞[2] 侯伟[3,4] 张雷 刘招君[5] 

机构地区：[1]江苏省有色金属华东地质勘查局,江苏南京210007 [2]南京大学地球科学与工程学院,江苏南京210023 [3]中国地质大学能源学院,北京100083 [4]中石油煤层气有限责任公司,北京100028 [5]吉林大学地球科学学院,吉林长春130061

出　　处：《地质学刊》2014年第1期1-11,共11页Journal of Geology

基　　金：国土资源部全国油气资源战略选区大庆外围项目(XQ-2004-07)

摘　　要：从露头、岩芯、测井、薄片鉴定等方面出发对漠河盆地中侏罗统沉积特征进行了详细的研究。中侏罗世漠河盆地主要发育冲积扇、扇三角洲和湖泊相沉积,其中冲积扇相可划分为扇根、扇中、扇端3个亚相;扇三角洲相可划分为扇三角洲平原、扇三角洲前缘、前扇三角洲3个亚相;湖泊相可划分为滨湖、浅湖、半深湖3个亚相。中侏罗世漠河盆地从南向北盆地水体加深,从绣峰组到开库康组,具有冲积扇—扇三角洲平原—扇三角洲前缘—滨浅湖—半深湖的变化趋势。从生储盖条件分析,漠河盆地具有较好的油气勘探前景。The authors carried out a detailed study on the sedimentary characteristics of middle Jurassic in Mohe Basin based on the outcrops, cores, loggings and thin section identification. Detailed research indicated that the middle Jurassic Epoch in Mohe Basin con- tained alluvial fan, fan delta and lacustrine facies. The alluvial facies could be divided into root fan, middle fan and distal fan subfa- cies. The fan delta facies could be divided into fan delta plain, fan delta front and pro-fan delta subfacies. The lacustrine facies could be divided into lakeshore, shallow lacustrine and semi-deep lake subfacies. The water gradually deepened from the south to the north in middle Jurassic Epoch in Mohe Basin. The sedimentary evolution from Xiufeng to Kaikukang formations was as alluvial fan-fan delta plain-fan delta front-shore-shallow lacustrine-semi-deep lake. The source-reservoir-cap conditions analysis showed that Mohe Basin was of good oil and gas exploration prospect.

关 键 词：沉积相 沉积特征 粒度分析 中侏罗统 漠河盆地 黑龙江 

分 类 号：TE121.1[石油与天然气工程—油气勘探]