摘要
渭北西部地区加里东构造带由一系列走向近东西、南倾北倒的紧闭倒转褶皱和叠瓦状逆冲断层组成。该带大致沿泾川-富平北西西一线以南呈近东西向延伸,推测向东可延入渭河地堑基底,其形成与北秦岭构造带形成发展密切相关。
This article presents the existence of Caledonian fold and fault zone in the area northwest of the Weihe River. It consists of the closed overturned recumbent folds and imbricat fault, which strike east and west, tilted to the south and overturned to the north.It is devoloped in the lower palaeozoic and upper precambrican structuer and separated from the upper palaeozic strata by an obvious angular unconformity. Based on the contact relation of the area strata and the distribution of the structure deformation, this tectonic zone can extend on the whole along Jingchuan-Fuping by westeastern direction. It probably entered as far as into the Weihe Graben. It should be a Caledonian tectonic zone of having its paticular area geologic backdrop between southern margin of Ordos massif and tectonic zone of the northern Qinling. Its existence has an important significance for discussing the tectonic evolution of the southern margin of Ordos massif and tectonic formation of the northern Qinling.
出处
《西北大学学报（自然科学版）》
CAS
CSCD
1989年第4期93-100,共8页
Journal of Northwest University（Natural Science Edition）
关键词
加里东
构造带
逆冲叠瓦
断层
The area northwest of the Weihe River
Thrust and imbricat fault
Caledonian tectonic zone
