摘要
反转构造是指在地史发展过程中,不同时期各种构造作用在一个地质体上的联合、迭加的构造面貌。反转构造有正反转构造和负反转构造两种基本类型。正反转构造是早正晚逆的构造运动序列,负反转构造是早逆晚正的构造运动序列。重力滑动构造是在基底拉张、翘倾运动中所开辟的空间中沉积的碎屑岩内发生和发展的,它依附于基底的构造运动,是非构造运动的产物,这是与反转构造的根本区别。即基底在拉张、翘倾过程中产生重力不稳,在重力作用下沉积碎屑岩顺断面和斜坡向沉降中心滑动形成的构造样式称重力滑动构造。研究认为以上几种地质营力形成的构造样式,只要具备成油的生储盖地质环境,都可形成油气藏,而以正反转构造最为有利。
Inversion structure is a kind of geological structure which was caused by various combination and superposition of tectonic forces in different geological epochs. The inversion structures can be classified as positive inversion structure and negative inversion structure. The positive one is formed by an early normal faulting and a later reverse faulting, and the negative one by an early reverse faulting and a later normal faulting. Gravity slide structure exists and develops in the clastic sedimentary formations in the space which was created by a tensile—tilting movement of the basement. Gravity slide structure (a nontectonic product) is attached to basement tectonic movement and is different from inversion structure essentially. In other words, the geological structure which was formed because the clastic sedimentary rock slid toward subsidence center slong faulting surface or slope due to gravity sliding in a basement tensile—tilting envi- ronment is called gravity slide structure. The geological structures created by these geological agents all have hydrocarbon resources provided that source rock, reservoir and sealing conditions are good. Particularly, the positive inversion structure is most favourable for hydrocarbon accumulation.
出处
《石油勘探与开发》
SCIE
EI
CAS
CSCD
北大核心
1993年第1期1-9,共9页
Petroleum Exploration and Development
