We found a match
Your institution may have rights to this item. Sign in to continue.
- Title
Laboratory evidence of strength recovery of a healed fault: implications for a mechanism responsible for creating wide fault zones.
- Authors
Masuda, Koji
- Abstract
Fault zones consist of a high-strain fault core and a surrounding damage zone of highly fractured rock. The close, reciprocal relationship between fault zones and earthquake rupture evolution demands better understanding of the processes that create and modify damage zones. This study modeled the evolution of a damage zone in the laboratory by monitoring seismic signals (acoustic emissions) in a specimen of ultramylonite stressed to failure. The result provided evidence supporting the strength recovery of parts of the healed surface. A new fault initiated in an area of heterogeneous structure a short distance from the preexisting fault plane. Repeated cycles of fracture and healing may be one mechanism responsible for wide fault zones with multiple fault cores and damage zones.
- Publication
Earth, Planets & Space, 2015, Vol 67, Issue 1, p1
- ISSN
1343-8832
- Publication type
Letter
- DOI
10.1186/s40623-015-0377-x