克拉美丽造山带向准噶尔盆地覆盖区延伸的多条件约束  

Multiple constrained on the extension of Kelameili orogenic belt to the hinterland of Junngar Basin

作　　者：洪扬 梁舒艺 黄芸[3] 伏小鹏 胡鑫[3] HONG Yang;LIANG Shuyi;HUANG Yun;FU Xiaopeng;HU Xin(Third drilling company,CNPC Bohai Drilling Engineering Compay,Limited,Tianjin 300280,China;Tianjin Branch Company Limited,CNOOC,Tianjin 300452,China;Research Institute of Exploration and Development,Xinjiang Oilfield Company,Urmuqi Xinjiang,830013,China)

机构地区：[1]中国石油集团渤海钻探工程有限公司第三钻井公司,天津300280 [2]中海石油(中国)有限公司天津分公司,天津300452 [3]中国石油新疆油田分公司勘探开发研究院,新疆乌鲁木齐830013

出　　处：《东北石油大学学报》2023年第1期96-102,I0006,I0007,共9页Journal of Northeast Petroleum University

基　　金：中国石油天然气股份有限公司科技攻关项目(2017E-0403)。

摘　　要：基于地面地质调查成果,在落实准噶尔盆地东北缘地面露头克拉美丽蛇绿岩带分布的基础上,利用卫星照片、重磁力勘探、钻井、地震、薄片及同位素测年等资料,根据岩心和岩屑中辉绿岩鉴定结果,明确克拉美丽蛇绿岩带向盆腹区(覆盖区)延伸的空间分布特征。结果表明:克拉美丽造山带从东北缘克拉美丽山露头区的蛇绿岩带向西延伸至盆腹区,以三个泉北断裂走向为轨迹,经彩深1、三参1、玛东2井与盆地西北缘的达尔布特蛇绿岩带相接。根据三参1和石南1井辉绿岩的锆石U-Pb测年结果,横跨准噶尔盆地北部的造山带在晚石炭世曾发生大规模基性辉绿岩墙的侵入。该结果对指导盆腹区石炭系火山岩天然气勘探的区带优选和目标评价,以及准噶尔盆地与北疆地区石炭系原型盆地恢复、烃源岩和岛弧火山岩分布有借鉴意义。Based on the results of surface geological survey and the distribution of Kelameili orogenic belt in the northeast margin of Junggar Basin,the spatial distribution of Kelameili ophiolite belt extending to the hinterland of the basin(covered area)is determined by using satellite photos,gravity and magnetic exploration,drilling,seismic,thin section and isotopic dating data and taking the identification results of diabase in core and cuttings as verification points features.The results show that the Kelameili orogenic belt extends westward from the ophiolite belt in the outcrop area of Kelameili Montain in the northeast margin to the hinterland of the basin.Taking the strike of Sangequan north fault as the track,the oceanic crust subduction zone connects with the Darbute ophiolite belt in the northwest margin of the basin through well Caishen 1,well Sancan 1 and well Madong 2.Based on zircon U-Pb dating results of diabase from well Sancan 1 and well Shinan 1,it is confirmed that large-scale intrusion of basic diabase dikes occurred in the Kelameili orogenic belt across the northern Junggar Basin in the Late Carboniferous.The quantitative research results of the distribution of this orogenic belt guides the zone selection and target evaluation of Carboniferous volcanic gas exploration in the basin abdomen area and can be used for reference in the restoration of Carboniferous prototype basins,the distribution of source rocks and island arc volcanic rocks in Junggar Basin and northern Xinjiang.

关 键 词：准噶尔盆地 石炭世 克拉美丽造山带 多条件约束 

分 类 号：P624.6[天文地球—地质矿产勘探] TE121.2[天文地球—地质学]