| 鄂尔多斯盆地中央古隆起板块构造成因初步研究 |
| |
| 引用本文： | 任文军,张庆龙,张进,郭令智.鄂尔多斯盆地中央古隆起板块构造成因初步研究[J].大地构造与成矿学,1999,23(2):191-196. |
| |
| 作者姓名： | 任文军 张庆龙 张进 郭令智 |
| |
| 作者单位： | 南京大学地球科学系,南京,210093 |
| |
| 摘 要： | 运用板块构造理论，对鄂尔多斯盆地西缘和南缘的地质背景和构造变形特征进行分析，认为鄂尔多斯盆地中央古隆起在早古生代由祁连海槽与鄂尔多斯盆地碰撞拼贴产生的近东西方向的侧向挤压应力作用而形成。盆地西缘近南北向的青铜峡－固原断裂是碰撞拼贴带，断裂带与中央古隆起延伸方向平行，同时，秦岭海槽由南向北推挤以及渭北构造带北界的近东西走向的草碧－老龙山－圣人桥断裂的左行走滑使中央古隆起的南端向东转折，导致中央古隆起在平面上呈现“Ｌ”形展布。
|
| 关 键 词： | 鄂尔多斯盆地 中央古隆起 板块构造 断裂 挤压应力 |
THE PLATE TECTONIC FORMATION OF THE CENTRAL PALEOUPLIFT IN THE ORDOS BASIN |
| |
| REN Wenjun,ZHANG Qinglong,ZHANG Jin,GUO Lingzhi.THE PLATE TECTONIC FORMATION OF THE CENTRAL PALEOUPLIFT IN THE ORDOS BASIN[J].Geotectonica et Metallogenia,1999,23(2):191-196. |
| |
| Authors: | REN Wenjun ZHANG Qinglong ZHANG Jin GUO Lingzhi |
| |
| Abstract: | On the basis of the plate tectonics, the authours analyse the geological setting and deformational structural aspects of the western and southern boundaries of the Ordos basin. The authors think that the central paleouplift in the Ordos basin was formed under the nearly E W lateral compressive stress produced by the collision and amalgamation of the Qilian trough and the Ordos basin in early Palaeozoic time. Along the western boundary of the Ordos basin, the nearly N S Qintongxia Guyuan fault was the zone of collision and amalgamation, and the fault zone was in parallel with the extending orientation of the central paleouplift. Meanwhile, the compression of the Qinling trough from south to north and the left lateral movement of the nearly E W Caobi-Laolongshan-Shengrenqiao fault, which is the northern boundary of the Weibei structural belt, made the southern tip bend toward east. This made the central paleouplift into “L shape”in the plane. |
| |
| Keywords: | Ordos basin central paleouplift plate tectonics fault compressive stress |
| 本文献已被 维普 万方数据 等数据库收录！ |
|
