南黄海盆地崂山隆起构造特征与油气勘探方向  

Structural characteristics and hydrocarbon exploration prospect of the Laoshan uplift in the South Yellow Sea Basin

作　　者：雷宝华 张银国[1,2,3] 王明健 陈建文 梁杰[1,2] 王文娟 LEI Baohua;ZHANG Yinguo;WANG Mingjian;CHEN Jianwen;LIANG Jie;WANG Wenjuan(Qingdao Institute of Marine Geology,CGS,Qingdao 266237,China;Laboratory for Marine Mineral Resources,Pilot National Laboratory for Marine Science and Technology(Qingdao),Qingdao 266237,China;School of Geosciences,China University of Petroleum,Qingdao 266580,China)

机构地区：[1]中国地质调查局青岛海洋地质研究所,青岛266237 [2]青岛海洋科学与技术试点国家实验室海洋矿产资源评价与探测技术功能实验室,青岛266237 [3]中国石油大学(华东)地球科学与技术学院,青岛266580

出　　处：《海洋地质与第四纪地质》2022年第2期131-143,共13页Marine Geology & Quaternary Geology

基　　金：青岛海洋科学与技术试点国家实验室山东省专项经费“中国海域重点盆地发育时空差异及其深部过程”(2021QNLM020001-1);中国地质调查局地质调查项目“崂山隆起构造沉积条件地质调查”(DD20190818);青岛市市南区科学计划项目“印支期以来崂山隆起构造变形与隆升过程”(2020-2-021-QT);国家自然科学基金“南黄海崂山隆起二叠系储层油气成藏破坏与流体演化过程还原研究”(42076220),“南黄海盆地中部隆起形成演化的低温热年代学制约”(41606079)。

摘　　要：崂山隆起海相地层作为南黄海盆地海相中—古生界油气勘探的新领域、新层系,将是下一步油气战略发现和勘探认识突破的方向。综合近年来详查勘探的地震解释成果,划分该隆起北部为青峰变形带,南部为高石稳定带。指出青峰变形带整体为逆冲和逆掩推覆体系,发育NE向逆断层;高石稳定带为弱变形稳定带,发育规模较小的NW向斜列断层。崂山隆起断裂走向有NE、NW和近EW向3组,边界断裂为近EW走向反转断裂。海相构造层变形具有北强南弱、西强东弱、上强下弱的特征。印支—早燕山期挤压推隆和晚燕山—喜马拉雅早期弱拉张/张扭作用下差异升降错断,形成了崂山断隆区,具有挤压、拉张、走滑和反转等4大构造样式。通过形成过程分析,揭示崂山隆起加里东期为古隆起;海西期为稳定地台;印支期可能为北部前陆盆地的前隆挠曲带,形成幅度增大的背斜;燕山早期为改造型断背斜;燕山中期崂山隆起基本定型;晚燕山—早喜马拉雅期隆升剥蚀,并发育局部小残凹;喜马拉雅晚期开始整体沉降。结合油气地质条件分析,认为崂山隆起南部的高石稳定带是海相油气勘探有利区带,海相下构造层(震旦系—志留系)变形改造较弱,是有利的油气勘探层系。Meso-Paleozoic marine deposits widely occur on the Laoshan uplift of the South Yellow Sea Basin.As a new field and layer for oil and gas exploration,it shall be the future targets for strategic discovery of oil and gas and the breakthrough point of exploration understandings.Based on the detailed seismic interpretation results and exploration progress made in recent years,the uplift is divided into two parts,the Qingfeng deformation zone in the north and the Gaoshi stable zone in the south.The Qingfeng deformation zone is a cover-detachment overthrust nappe system characterized by NE trending thrust faults,while the Gaoshi stability zone a weak deformation and stable zone.NW trending synclinal faults are developed in small scale.The fault system of the Laoshan uplift can be subdivided into three groups,NE,NW and nearly EW in trending,and the boundary fault is a reverse fault nearly in EW direction.The deformation of marine structural layer is strong in the north and west and weak in the south and the east,strong in the upper and weak in the lower.The Laoshan fault-uplift area was formed by Indosinian-Early Yanshanian compressional thrust and late Yanshanian-Early Himalayan weak tension/tension torsion,and four structural styles of compressional,tensional,strike-slip and inversional are recognized.Through the analysis of their forming process,it is revealed that the Laoshan uplift is an old uplift formed in Caledonian period.It was a stable platform in Hercynian.In the Indosinian period,the northern foreland basin was probably a foreuplift flexural belt,formed on an anticline with increasing amplitude.The early Yanshanian fault anticline was a reformed fault anticline.The uplifting was basically stopped in middle Yanshanian stage.The uplifting and denudation happened in late Yanshanian-early Himalayan period,and local residual depressions developed.The overall subsidence began in late Himalayan.Combined with the analysis of oil and gas geological conditions,it is considered that the Gaoshi stable zone in the south

关 键 词：海相地层 形成过程 构造特征 油气勘探 崂山隆起 南黄海盆地 

分 类 号：P736[天文地球—海洋地质]