盆地原型序列研究的思路与方法:以东秦岭—大别及其两侧盆地为例  

Research ideas and methods for basin prototype sequence:A case study on basins of both sides of the East Qinling-Dabie orogenic belt

作　　者：方成名[1,2] 黄泽光[2] 徐旭辉[2] 高长林[2] 陆永德[2] 

机构地区：[1]中国地质大学(武汉)资源学院,湖北武汉430074 [2]中国石化勘探开发研究院无锡石油地质研究所,江苏无锡214126

出　　处：《地学前缘》2015年第3期137-145,共9页Earth Science Frontiers

基　　金：国家科技重大专项(2011ZX05002-006-001);全国油气资源战略选区调查与评价项目(XQ-2007-02)

摘　　要：现今盆地的复杂结构是不同历史阶段原型并列与叠加的组合。恢复盆地的原型演化序列是推测成烃成藏过程和油气藏分布的有效途径。在论述TSM盆地原型序列研究思路与方法的基础上,厘定了造山带古海洋恢复、陆内构造变形分析、盆地原型系列编图、盆地动态模拟4项配套关键技术;并以东秦岭—大别及邻区新元古代—早古生代盆地为例,明确了古中国洋的扩张以及向北的俯冲消亡和碰撞决定华北与扬子早古生代陆缘两侧经历了不同原型演化的过程。华北陆块南侧会聚陆缘的叠加转化造成两侧前泥盆系油气成藏物质的迥异分布,中、新生代以来原型更迭表现为多期构造改造与盆地叠加导致烃源热演化地区分异与多种油气成藏富集类型共存。由此表明,改造型盆地的油气地质评价立足盆地原型序列分析是可行和必要的,可从整体把握原型控制下烃源岩分布和叠加过程的油气成藏响应。The present complex texture of petroliferous basin is the results of superimposition and juxtaposition of basin prototype at the different geohistory stage. It is an effective way to speculate the distribution of the ancient sedimentary depression, the process of hydrocarbon generation and accumulation, the distribution of oil and gas pools, that reverting and reconstructing the basin prototype evolution sequence of reformed basin. It is proposed that the research ideas and methods for basin prototype sequence and 4 supporting key technology, based on analyzing the ideas and methods of prototype analysis. The key supporting techniques including orogenic ancient ocean recovery, intercontinental deformation analysis, prototype basin sequence mapping and dynamic simulation of basin. Taking the Neoproterozoic- Early Paleozoic basin of the East Qinling-Dabie orogenic belt and adjacent areas as an example, reconstructed the evolution process of the ancient China ocean and its corresponding basin prototype sequence. The expansion of ancient China ocean and the northward subduetion event determined the different basin evolution process of its both sides of the Early Paleozoic basin. The basin evolution since the Mesozoic and Cenozoic, represents multi period tectonic transformation and basin superposition resulting the large difference of hydrocarbon source thermal evolution and multiple oil and gas accumulation types. The results shows that the application of prototype basin sequence analysis method is feasible and necessary for assessment of geological in reformed petroliferous basin, and which can make a whole knowledge of the hydrocarbon source rock distribution under the control of basin prototype and the petroleum response under the superposition of basin prototype.

关 键 词：盆地原型 TSM思路与方法 环境、组成、体制 地质作用 油气响应 东秦岭—大别 

分 类 号：P618.13[天文地球—矿床学]