甘肃北山勒巴泉变质核杂岩

收稿日期: 2001-11-29

修回日期: 2002-03-21

刊出日期: 2003-06-15

On metamorphic core complex of Lebaquan in Beishan area, Gansu

Received Date: 29 November 2001

Revised Date: 21 March 2002

Publish Date: 15 June 2003

摘要: 在多期伸展体制下形成的勒巴泉变质核杂岩构造,具有3层结构的特征,即结晶基底、中间韧性盖层、上部脆性盖层,其间分别被基底剥离断层和盖层剥离断层分割。本文重点论述了变质核杂岩的组成、空间展布、结构构造和典型的构造样式,并分析了变质核杂岩构造的形成时代和大地构造背景。
- 甘肃北山 /
- 变质核杂岩 /
- 剥离断层 /
- 伸展构造
Abstract: The metamorphic core complex of Lebaquan is formed at multiple stage extensional structure system, and is characterized by a three-layer texture: crystalline basement, middle shear cover-layer and upper brittle cover-layer.And the three layers are divided by basement denudational fault and cover-layer denudational fault.The paper mainly deals with material formation, texture and typical tectonic style, and analyses the formation age and tectoncs background.
- Beishan /
- Gansu /
- metamorphic core complex /
- denudational fault