南黄海中部隆起地震层序地层的识别及其地质时代探讨

作    者:杨艳秋1,2,易春燕3,李 刚1,2
单    位:(1 国土资源部海洋油气与环境地质重点实验室; 2 青岛海洋地质研究所; 3 中国石油大学(北京))
基金项目:受全国油气资源战略选区调查与评价国家专项(编号:XQ-2005-01)等共同资助
摘    要:
应用地震地层学研究方法,对南黄海盆地中部隆起近几年新采集、处理的地震剖面进行综合解释,共识别出6个地震层序。通过地震反射特征分析、地层速度分析、重磁震联合反演和区域地质对比,推测这些层序的地质时代属性分别为前震旦系、震旦系、寒武系—奥陶系、志留系—泥盆系、石炭系—下二叠统、以及新近系—第四系。研究区的沉积地层分布广泛,厚度较大,整体呈NNE向和近EW向展布。对中部隆起地层的属性分析结果,不仅能为盆地的结构和地质演化研究提供基础的地质资料,而且对中部隆起的油气勘探和资源评价都具有意义。
关键词:南黄海;中部隆起;地震层序;地质时代;地层划分

Sequence Stratigraphic Identification and Geologic Age Inference of Seismic Profiles in Central Uplift, South Yellow Sea

Author's Name: Yang Yanqiu, Yi Chunyan, Li Gang
Institution: Qingdao Institute of Marine Geology
Abstract:
It is known that there is good hydrocarbon potential in lower Paleozoic reservoirs in Central Uplift, South Yellow Sea Basin. Analysis of stratigraphic attribute is significant. Based on the analysis on the seismic profiles that have been acquired and processed in recent years, six seismic sequences are identified in this uplift. According to seismic reflection features, formation velocity, integrated gravity-magnetic-seismic inversion and regional geological correlation, it is inferred that these stratigraphic sequences are attributed to pre-Sinian, Sinian, Cambrian-Ordovician, Silurian-Devonian, Carboniferous-Lower Permian and Neogene-Quaternary. These sequences are widely distributed with huge sedimentary thickness and demonstrate NNE- and EW-trending in general.
Keywords: Seismic sequence; Geologic age; Stratigraphic division; South Yellow Sea
投稿时间: 2014-07-04  
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