吉南板石沟地区前寒武纪构造韧变序列及地壳演化

详细信息

收稿日期: 1998-03-05

刊出日期: 1999-11-15

The Precambrian ductile deformation sequence and crustal evolution in Banshigou,South Jilin

Received Date: 05 March 1998

Publish Date: 15 November 1999

摘要: 1∶5 万吉南板石沟幅地质填图,查明前寒武纪变质岩系内发育一套韧变序列:前阜平旋回中构相;阜平旋回第一幕浅—中构相;阜平旋回第二幕中—浅构相;吕梁旋回早期浅构相;吕梁旋回晚期表—浅构相。各期面状构造特征性韧变标志,反映出近东西向龙岗古陆核是由韧性—脆性、由活动向稳定演化的一套构造堆积体组成的。
- 前寒武纪构造 /
- 韧变序列 /
- 地壳演化 /
- 吉林
Abstract: The 1∶50 000 mapping revealed a set of ductile deformation belts in the metamorphic rocks in Banshigou area. Five deformation episodes could be identified in the area:Pre Fuping episode at intermediate depth,episode 1 of Fuping cycle at shallow to intermediate depth,episode 2 of Fuping cycle at intermediate to shallow depth,early Lüliang cycle at shallow depth,late Lüliang cycle at surficial to shallow depth.The foliations are characteristic of ductile deformation,suggesting that the nearly E W striking Longgang massif consists of tectonic accumulation corresponding transfer from ductile to brittle deformation and from mobile to stable setting.
- Precambrian structure /
- ductile deformation sequence /
- crustal evolution /
- Jilin

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