摘要
多种能源矿产共存富集的盆地动力学问题正在成为地质学家期待解决的前缘科学问题.鄂尔多斯盆地是在古生代华北克拉通盆地基础上发育形成的中新生代多旋回沉积盆地,盆地构造与多种能源矿产时空配置关系的研究表明,油-气-煤-铀等多种沉积能源矿产虽然赋存于盆地的不同构造单元和古生界至中生界的不同地质层位,但它们在空间分布和成矿时间上却表现出相互关联,共存富集的统一性,促使它们统一成矿、共存定位的峰值时代主要发生在盆地重大变革的燕山中晚期(140～120 Ma±)和后期改造过程的早喜山期(60 Ma±),明显受控于盆地中新生代的构造演化关键时期的构造转换及其耦合成矿作用.因此,探索研究鄂尔多斯盆地不同演化阶段的古构造面貌、关键变革时期的构造应力场环境及其叠加转换关系,有助于客观认识多种能源矿产共存富集可能受控的统一构造动力学环境及其耦合成矿效应.
The basin dynamic environment of multiple energy resources coexistence is a key frontier for sedimentary basin research and resources exploration. Ordos Basin is a Mesozoic to Cenozoic multi-cyclic sedimentary basin in North-China. which developed on the Paleozoic North China craton basin. By analyzing the relationships between basin tectonics and multiple energy resources, we have studied the Ordos Basin tectonics relative to the coupling coexistence of multiple energy resources in time and space. The multiple energy resources of oil, gas, coal, and sandstone-typc uranium deposit accumulate in different tectonic elements and in various sequences of Paleozoic to Mesozoic strata, but relate to or depend on one another for coupling coexistence in the basin. Especially, the first critical period of their coupling coexistence was about 140～120 Ma in agreement with the middle to late Yanshanlan, corresponding to an intensive tectonic-thermal event and a tectonic transition of the basin. The second was mainly at about 60Ma±, corresponding to a tectonic uplifting process during the early Himalayan. The coupling coexistence of the multiple energy resources was obviously controlled by the basin tectonic evolution, tectonic transition of the critical period and later reformation during the Mesozoic to the Cenozoic. It is important to study the basin original tectonics, stress fields, and the composite characteristics in the critical periods, which can offer an integrated approach for recognizing the coupling effect of multi-resources coexistence and its controlled environment of the basin dynamics.
出处
《地学前缘》
EI
CAS
CSCD
北大核心
2005年第4期535-541,共7页
Earth Science Frontiers
基金
国家重点基础研究发展计划"973"项目(2003CB214601)
关键词
鄂尔多斯盆地
构造演化
构造事件
多种能源矿产
耦合共存
Ordos Basin
tectonic evolution
tectonic event
multiple energy resources
coupling coexistence
作者简介
陈刚（1965- ）,男,博士,教授,主要从事盆地构造与油气地质专业的科研与教学.E-mail：chengang@nwu.edu.cn
