半地堑(half graben)是指断层其围限而成的低地(谷地),特点是仅一侧存在有断层。
Groshong( 2001) ① 认为斜向简 单剪切或垂直简单剪切机理适合于半地堑( half graben) 的复原,纯剪切机理则适合于完整地堑(f ull graben) ,而刚体旋转机理在自然界中很少发生,除 非存在厚的韧性滑脱带.
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半地堑构造 half-graben structure
Huadian Basin is a small-scale half-graben basin,and F1 fault in the southern margin of the basin controls the Palaogene lake evolution.
桦甸盆地为小型半地堑盆地,盆地南缘F1断裂控制了古近系湖泊演化特征。
参考来源 - 古湖泊学研究——以桦甸断陷盆地为例·2,447,543篇论文数据,部分数据来源于NoteExpress
松辽盆地存在裂谷期前火山岩,之后上地壳脆性伸展发育半地堑裂谷盆地。
In the Songliao basin there occurred pre-rift volcanic rocks. Then brittle extension of the upper crust gave rise to a semi-graben rift basin.
中白垩世孙宗湾组的沉陷进一步向东侧移,形成了以F1断层为盆缘断层的半地堑;
The subsidence of Sunjiawan episode in Middle Cretaceous are further transferred eastward, and the half-graben defined by the fault F1 was formed.
此文证明了半地堑理论的实用性与优越性,是盆地分析工作中的一种新思路、新方法。
This paper proves the practicality and advantages of the half-graben theory which is a new thinking and a new method in basin analyses.
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