| 郯庐断裂中段石场-中楼拉分盆地的确定 |
| |
| 引用本文： | 周建波,宫田隆夫.郯庐断裂中段石场-中楼拉分盆地的确定[J].地质科学,1999,34(1):18-28. |
| |
| 作者姓名： | 周建波 宫田隆夫 |
| |
| 作者单位： | 1. 长春科技大学地球科学系, 长春 130061;2. 国立神户大学 日本 |
| |
| 摘 要： | 郯庐断裂中段石场-中楼一带,产出一长宽比近于2:1的菱型构造盆地。盆地内早白垩世莱阳群的沉积厚度大于6263.71m,沉积速率大于0.392mm/a,主体以火山岩及火山碎屑浊积岩为主,同沉积构造发育、沉积相变剧烈、沉积中心沿边界断层的走滑运动方向迁移,具形成拉分盆地的典型构造背景、构造格架及沉积特征。初步确定石场-中楼盆地为郯庐断裂早白垩世左旋走滑运动过程中形成的拉分盆地。
|
| 关 键 词： | 郯庐断裂 拉分盆地 早白垩世 石场－中楼 |
| 收稿时间： | 1997-07-29 |
| 修稿时间： | 1997-07-29; |
DETERMINATION OF SHICHANG ZHONGLOU PULL APART BASIN IN NIDDLE SECTION OF TANCHENG LUJIANG FAULT |
| |
| Zhou Jianbo\ Hu Ke\ Shen Ninghua\ Zhao Da.DETERMINATION OF SHICHANG ZHONGLOU PULL APART BASIN IN NIDDLE SECTION OF TANCHENG LUJIANG FAULT[J].Chinese Journal of Geology,1999,34(1):18-28. |
| |
| Authors: | Zhou Jianbo\ Hu Ke\ Shen Ninghua\ Zhao Da |
| |
| Institution: | 1. Changchun University of Science and Technology, Changchun 130061;2. Kobe University, Japan |
| |
| Abstract: | The Yihe-Shuhe Fault is the main part of the Tancheng-Lujiang Fault. It shows a very clear trackway of strike-slip structures in early Cretaceous. The Shichang-Zhonglou Basin sited in the middle part of the Yihe-Shuhe Fault. Laiyang group(135-119 Ma)formed at the same time of the regional strike-slip movement in this basin. The length of the basin is 60 km and the width is 30 km. The length to width ratio is nearly 2:1 and it was a rhombochasm basin. It had the pull-apart basin characters with typical structure frame. The thickness of the Laiyang group was bigger than 6263.71 m and the sedimentation rate was more than 0.392 mm/a. The main sedimental facies includes turbid flow sediment of river and lake facies, lake facies and ocean facies. It shows that the basin was deep and nerrow. The sedimentary speed was fast and the sedimentary facies changed rapidly. Along the boundary faults distributed a lot of synchronous structures of slip collapses piles and convolute beddings. The wide spreaded turbid sediment shows that boundary movement was very strong. Volcanic rocks formed on the background of strike-slip structures in the basin and the sedimentary center of the basin moved towared north direction. It indicates that the boundary faults were left lateral strike-slip. The sediment synchronously formed with strike-slip. All of these show that Shichang-Zhonglou Basin was a pull-apart basin formed in sinistral strike-slip process of the Tancheng-Lujiang fault. |
| |
| Keywords: | Tancheng Lujiang Fault Pull apart Basin Early Cretaceous Shichang Zhonglou |
| 本文献已被 CNKI 维普 等数据库收录！ |
| 点击此处可从《地质科学》浏览原始摘要信息 |
| 点击此处可从《地质科学》下载免费的PDF全文 |
