| 胡正国,钱壮志.小秦岭西段拆离－变质杂岩核构造[J].地质找矿论丛,1994,(2):58-66 |
| 小秦岭西段拆离－变质杂岩核构造 |
| DETACHMENT-METAMORPHIC COMPLEX CORE STRUCTURE CONFIGURATION |
| |
| DOI：10.6053/j.issn.1001-1412.1994.2. 007 |
| 中文关键词: 小秦岭 拆离－变质杂岩核构造 |
| 英文关键词: |
| 基金项目: |
|
| 摘要点击次数: 1242 |
| 全文下载次数: 1864 |
| 中文摘要: |
| 小秦岭属华北古陆核南缘,由两个次级构造单元(太华台拱、金堆台凹)组成。太华台拱为变质杂岩出露区,无盖层,呈热穹窿-短轴复背形,南北两侧均有古老区域级糜棱岩带产出,后期脆性正断层将其与邻区分隔开。北侧紧邻渭河断凹,堆积巨厚新生代沉积物;南侧的金堆台凹按构造组合特征划分为三带,形成以伸展滑覆为特征的拆离构造组合区。展示出“拆离-变质杂岩核”①构造的基本势态。该构造模型及其动力学背景的研究提供了对小秦岭整体构造型式,区域地质及金矿成矿特征研究的新思路。 |
| 英文摘要: |
| Xiaoginling Mt is located at the south margin of the North China Palaeo-continent consisting of 2 sub-tectonec units, ie. ,Taihua Anteklise and Jinduitai Synklise. The Taihua Anteklise is the metamorphic complex-outcroped area (without coverrock)as thermal domed short axis anticlinorium neighbouring acient regional mylonite on the north and south and border weihe fault depression (with Cenozoic sedimends) in the north and Jinduitai synklise in the south by normal faults. The synklise is subdivided into 3 structural association belts chaiacterized by detatchment association areas with extension sliping overlap. The distribution shows a detatchmen-tmetamorphic complex core structural configuration. Study of the structural model and the dynamic background will shed a new light to the integral tectonic style of Xiaoqinling Mt regional geology as well as Au-metallogeny in the area. |
| 查看全文 查看/发表评论 下载PDF阅读器 |
| 关闭 |
|
|
|
