Imperial College London
Portrait Picture

DrRebeccaBell

Faculty of Engineering, Department of Earth Science & Engineering

Reader in Tectonics
 
 
 
//

Contact

 

+44 (0)20 7594 0903rebecca.bell

 
 
//

Location

 

2.37aRoyal School of MinesSouth Kensington Campus

//

Summary

 

Publications

Citation

BibTex format

@article{Hughes:2020:10.1029/2020jb019539,
author = {Hughes, A and Bell, RE and Mildon, ZK and Rood, DH and Whittaker, AC and Rockwell, TK and Levy, Y and DeVecchio, DE and Marshall, ST and Nicholson, C},
doi = {10.1029/2020jb019539},
journal = {Journal of Geophysical Research: Solid Earth},
title = {Threedimensional structure, ground rupture hazards, and static stress models for complex nonplanar thrust faults in the Ventura basin, southern California},
url = {http://dx.doi.org/10.1029/2020jb019539},
volume = {125},
year = {2020}
}
Download

RIS format (EndNote, RefMan)

TY  - JOUR
AB  - To investigate the subsurface geometry of a recently discovered, seismicallyactive fault in the Ventura basin, southern California, USA, we present a series of cross sections and a new threedimensional fault model across the Southern San Cayetano fault (SSCF) based on integration of surface data with petroleum industry welllog data. Additionally, the fault model for the SSCF, along with models of other regional faults extracted from the Southern California Earthquake Center threedimensional Community Fault Model, are incorporated in static Coulomb stress modeling to investigate static Coulomb stress transfer between thrust faults with complex geometry and to further our understanding of stress transfer in the Ventura basin. The results of the subsurface well investigation provide evidence for a lowangle SSCF that dips ~15° north and connects with the western section of the San Cayetano fault around 1.5–3.5 km depth. We interpret the results of static Coulomb stress models to partly explain contrasting geomorphic expression between different sections of the San Cayetano fault and a potential mismatch in timings between largemagnitude uplift events suggested by paleoseismic studies on the Pitas Point, Ventura, and San Cayetano faults. In addition to new insights into the structure and potential rupture hazard of a recently discovered active reverse fault in a highly populated area of southern California, this study provides a simple method to model static Coulomb stress transfer on complex geometry faults in fold and thrust belts.
AU  - Hughes,A
AU  - Bell,RE
AU  - Mildon,ZK
AU  - Rood,DH
AU  - Whittaker,AC
AU  - Rockwell,TK
AU  - Levy,Y
AU  - DeVecchio,DE
AU  - Marshall,ST
AU  - Nicholson,C
DO  - 10.1029/2020jb019539
PY  - 2020///
SN  - 2169-9313
TI  - Threedimensional structure, ground rupture hazards, and static stress models for complex nonplanar thrust faults in the Ventura basin, southern California
T2  - Journal of Geophysical Research: Solid Earth
UR  - http://dx.doi.org/10.1029/2020jb019539
UR  - https://agupubs.onlinelibrary.wiley.com/doi/abs/10.1029/2020JB019539
UR  - http://hdl.handle.net/10044/1/79969
VL  - 125
ER  -
Download