松辽盆地中央坳陷朝84-6井区泉头组四段沉积期双物源体系分析  

Multiple provenance analysis of the Chao 84-6 well area during the deposition of the 4th member of the Quantou Formation in the Central depression,Songliao Basin

作　　者：王朋岩[1] 李耀华[1] 

机构地区：[1]东北石油大学地球科学学院,黑龙江大庆163318

出　　处：《沉积与特提斯地质》2016年第1期90-97,共8页Sedimentary Geology and Tethyan Geology

基　　金：国家科技重大专项(编号2011ZX05028002);黑龙江省普通高等学校青年学术骨干支持计划项目(编号1155G03)资助

摘　　要：松辽盆地朝84-6井区在白垩系泉头组四段沉积时期位于盆地西南通榆-保康水系和南部长春-怀德水系的交汇处,交汇水系内沉积物来源、古水流走向等仍属未知。通过对岩心、分析化验资料和区域砂体厚度预测结果的综合研究,根据重矿物组合特征、ZTR指数变化特征和地层砂体展布规律,发现研究区的沉积特征具明显物源分带性,将其划分为保康物源体系主控I区、怀德物源体系主控III区和双物源体系混合控制II区。结合研究区沉积相模式研究成果,对比分析各分区的碎屑岩组分、砂岩厚度、岩石粒度和泥岩颜色等沉积特征的相似性和差异性,验证了物源体系主控区域划分的合理性。The Chao 84-6 well area was located in the intersection of the Tongyu-Baokang drainage system in the southwest and Changchun-Huaide drainage system in the south of the Songliao Basin during the deposition of the 4th member of the Cretaceous Quantou Formation in the Central depression, Songliao Basin. Due to complex convergence of multiple sources of the drainage systems,the sediment sources and palaeocurrent directions remain uncertain up to now. In the light of heavy mineral assemblages,ZTR indices and sandstone distribution,the authors in this paper contend that the sediment sources may be composed of the provenance I controlled by the Baokang drainage system in the southwest,provenance III controlled by the Huaide drainage system in the south,and provenance II controlled by the double drainage systems.

关 键 词：松辽盆地 朝84-6井区 泉四段 双物源 

分 类 号：P512[天文地球—地质学]