摘要
伸展盆地控凹断层早期多条正断层分段和晚期联接生长发育过程往往导致盆地内构造沉降、沉积特征及构造格局的分段性差异。通过分析苏北盆地溱潼凹陷东部三维精细构造解释成果,发现该区构造线具有沿NE向不连续分带特征;自NE往SW分为Ⅰ、Ⅱ两个构造单元,其中Ⅱ单元可细分为Ⅱ1和Ⅱ2两个次级单元。控凹断层(泰州断裂)早期分段及后期联接的复杂发育过程为构造线不连续特征形成的主要原因。此外,溱潼凹陷北西走向弱化带亦为影响因素之一。
The major boundary faults always experienced a complicated growth history and caused regional segmentation of extended zone in the Cenozoic extensional basin of eastern China. Based on the analysis and summarization of the results of 3-D structural interpretation in eastern Qintong Depression, the discontinuity property along NE strike was discovered. 2 structural units I, II are divided from NE to SW, the unit II could be subdivided into Ⅱ1 and Ⅱ2, The early subsection growth and later linkage of major boundary faults result in non-equilibrium of strain along strike. The weak NW strike is one of the influential factors.
出处
《石油天然气学报》
CAS
CSCD
北大核心
2010年第1期197-199,204,共4页
Journal of Oil and Gas Technology
关键词
构造线
构造变换带
软联接
硬联接
溱潼凹陷东部
structural discontinuity property
Transfer zone
soft linkage
hard-linkage
Qintong Depression.
