3D Seismic Characterisation of an Array of Blind
Baudon, Catherine1,
Joe Cartwright1 (1)
High resolution 3D seismic data from the
Numerous previous studies publishing displacement
distribution on normal faults from outcrop or 2D seismic data predict
triangular or C-type throw profiles. These provide insight into the mechanics
of the initiation and growth of faults and have been used, along with
displacement-length scaling, to promote several different fault growth models.
Results from this study show that blind
faults do not exhibit striking triangular or C type throw profiles but
predominantly display M-type or hybrid throw distribution. The simplest
individual unrestricted blind faults are compared to those interacting with
other faults or a major lithological boundary.
Results show that the propagation and establishment of the dimensions of the
faults precedes the accumulation of displacement.
A further aim of this comprehensive
description of blind faults from 3D seismic data is to analyse
the transition from a post-sedimentary stage to a syn-sedimentary
stage on extensional faults. The understanding of nucleation, propagation and
early development of growth faults is essential in accurately dating fault
activity and can greatly impact reservoir characterisation
through time.
AAPG Search and Discover Article #90063©2007 AAPG Annual Convention, Long Beach, California