准噶尔盆地石炭系的划分、对比及分布  

STRATIGRAPHIC DIVISION,CORRELATION AND DISTRIBUTION OF THE CARBONIFEROUS SYSTEM IN THE JUNGGAR BASIN

作　　者：吕焕通[1] 夏惠平[1] 陈中红[2] 赖世新[1] 张勇[2] 毛海波[1] 

机构地区：[1]中国石油新疆油田分公司勘探开发研究院,新疆克拉玛依834000 [2]中国石油大学(华东)地球科学与技术学院,山东青岛266580

出　　处：《地层学杂志》2013年第3期353-360,共8页Journal of Stratigraphy

基　　金：国家重大科技攻关项目"重点盆地地层油气藏成藏机理与分布规律"(2011ZX05001-001-006);中石油新疆油田分公司重大项目"新疆北部石炭系火山岩油气地质理论;核心技术与勘探重大突破"及"准噶尔盆地火山岩油气藏成藏机理与勘探实践"资助

摘　　要：结合野外露头,充分利用钻井、锆石SHRIMP年龄、地震及重磁资料,依据地层规范,兼顾生产应用的习惯,沿用卡拉麦里地层小区石炭系地层序列及岩石地层单位名称,建立了准噶尔盆地石炭系划分对比格架,预测了准噶尔盆地主要覆盖区宾夕法尼亚亚系的分布。准噶尔盆地密西西比亚系自下而上大致可以分为三部分,时代分别对应于杜内期早期、杜内期晚期、维宪期至谢尔普霍夫期;宾夕法尼亚亚系分为巴塔玛依内山组和石钱滩组。准噶尔盆地宾夕法尼亚亚系钻井资料远比密西西比亚系丰富,地震反射特征较密西西比亚系明显,目前石炭系的油气发现主要集中在宾夕法尼亚亚系。宾夕法尼亚亚系在周缘呈带状大面积分布,向盆内逐渐变薄,与相邻造山带具有较好的过渡关系。存在克拉玛依、沙湾、大井等厚度中心,盆地内部宾夕法尼亚亚系呈隆凹相间格局分布。密西西比亚系地层地震反射以杂乱、弯褶地震相为主,不整合接触关系比较明显。Integrating outcrop, drill core, zircon SHRIMP U-Pb geochronometric, seismic, gravimetric, and magnetic data, we establish a stratigraphic framework for the Carboniferous System in the Kalamaili area. This stratigraphic framework allows stratigraphic correlation and spatial characterization of the Car- boniferous System in the Junggar Basin. The Lower Carboniferous of the Junggar Basin can be generally divided into three units, corresponding to the early Tournaisian, late Tournaisian, and Visean-Serpuchov stages, respectively. The Upper Carboniferou~ can be divided into Batamayineishan and Shiqiantan forma- tions. Drill core data of the Upper Carboniferous are far more abundant than the Lower Carboniferous in this region. Seismic reflection features of the Upper Carboniferous are thus more easily recognizable than the Lower Carboniferous. At present, oil and gas exploration in the Junggar basin mainly focuses on the Upper Carboniferous. Seismic reflections of the Lower Carboniferous are not easily recognizable. Upper Carboniferous strata are widely distributed in the margin of the Junggar Basin and thin toward the center. Thickness centers exist in Karamay, Shawan, and Dajing areas. The distribution of the Upper Carbonifer- ous inside the basin was controlled by uplifts and depressions.

关 键 词：地层划分 地层对比 地层分布 石炭系 准噶尔盆地 新疆 

分 类 号：P534.45[天文地球—古生物学与地层学]