Imperial College London

Prof Jenny Collier

Faculty of EngineeringDepartment of Earth Science & Engineering

Professor of Marine Geophysics
 
 
 
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Contact

 

+44 (0)20 7594 6443jenny.collier CV

 
 
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Location

 

4.46Royal School of MinesSouth Kensington Campus

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Summary

 

Publications

Citation

BibTex format

@article{Westhead:2018:10.1016/j.pgeola.2017.08.005,
author = {Westhead, RK and McCarthy, DJ and Collier, JS and Sanderson, DJ},
doi = {10.1016/j.pgeola.2017.08.005},
journal = {Proceedings of the Geologists' Association},
pages = {436--451},
title = {Spatial variability of the Purbeck-Wight Fault Zone-a long-lived tectonic element in the southern UK},
url = {http://dx.doi.org/10.1016/j.pgeola.2017.08.005},
volume = {129},
year = {2018}
}

RIS format (EndNote, RefMan)

TY  - JOUR
AB - New seamless onshore to offshore bedrock (1:10. k scale) mapping for the Lyme Bay area is used to resolve the westward termination of the Purbeck-Wight Fault Zone (PWFZ) structure, comprising one of the most prominent, long-lived (Variscan-Cimmerian-Alpine) structural lineaments in the southern UK. The study area lies south of the Variscan Frontal Thrust and overlays the basement Variscide Rhenohercynian Zone, in a region of dominant E-W tectonic fabric and a secondary conjugate NW-SE/NE-SW fabric. The PWFZ comprises one of the E-W major structures, with a typical history including Permian to early Cretaceous growth movement (relating to basement Variscan Thrust reactivation) followed by significant Alpine (Helvetic) inversion. Previous interpretations of the PWFZ have been limited by the low resolution (1:250. k scale) of the available offshore BGS mapping, and our study fills this gap. We describe a significant change in structural style of the fault zone from east to west. In the Weymouth Bay area, previous studies demonstrate the development of focussed strain associated with the PWFZ, accompanied by distributed strain, N-S fault development, and potential basement uplift in its hangingwall. In the Lyme Bay area to the west, faulting is dominantly E-W, with N-S faulting absent. Comparison of the newly mapped faulting networks to gravity data suggests a spatial relationship between this faulting variation and basement variability and uplift.
AU - Westhead,RK
AU - McCarthy,DJ
AU - Collier,JS
AU - Sanderson,DJ
DO - 10.1016/j.pgeola.2017.08.005
EP - 451
PY - 2018///
SN - 0016-7878
SP - 436
TI - Spatial variability of the Purbeck-Wight Fault Zone-a long-lived tectonic element in the southern UK
T2 - Proceedings of the Geologists' Association
UR - http://dx.doi.org/10.1016/j.pgeola.2017.08.005
UR - http://hdl.handle.net/10044/1/58550
VL - 129
ER -