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A New Growth Model of Fault Attributes in a Strike‐Slip Fault System in the Tarim Basin
Author(s) -
ZHANG Yintao,
WU Guanghui,
WANG Junfang,
LI Guohui,
WAN Xiaoguo,
YANG Tianyi
Publication year - 2020
Publication title -
acta geologica sinica ‐ english edition
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.444
H-Index - 61
eISSN - 1755-6724
pISSN - 1000-9515
DOI - 10.1111/1755-6724.14581
Subject(s) - strike slip tectonics , geology , fault (geology) , slip (aerodynamics) , tarim basin , seismology , structural basin , engineering , geomorphology , paleontology , aerospace engineering
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.