A New Growth Model of Fault Attributes in a Strike-Slip Fault System in the Tarim Basin

• 作者: LI Guohui WAN Xiaoguo WANG Junfang WU Guanghui YANG Tianyi ZHANG Yintao
• 来源期刊: 地质学报（英文版）
• 年，卷（期）: 2020,（5）
• 所属期刊栏目: ORIGINAL ARTICLES
• 页码范围: 1373-1380
• 页数: 8页
• 语种: 英文

摘要

Fault attributes generally display a consistent power-law-scaling relationship.Based on new 3D seismic data,however,we found some exceptional fault attribute relationships of lengths (L)-throw (T) (vertical component of displacement),overlap zone length (Lo)-width (Wo) from a strike-slip fault system of the Ordovician carbonates in the Tarim Basin.The L-T relationship shows two linear segments with breakup at ～40 km in fault length.This presents an exceptional throw increase in the second stage,which is attributed to a localization of vertical displacement and deformation in overlapping zones other than the different fault scales in a mature fault zone.The Lo-Wo relationship in the overlapping zones shows multiply stepped-shape patterns,suggesting multiple fault differential growth and periodic increase in fault size.Therefore,we propose a new alternative growth model of fault attributes in strike-slip fault zones,in which the overlapping zones accumulated localized displacement and deformation in the intracratonic strike-slip fault zone.