Imperial College London

Dr Philippa J Mason

Faculty of EngineeringDepartment of Earth Science & Engineering

Senior Teaching Fellow
 
 
 
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Contact

 

+44 (0)20 7594 6528p.j.mason Website

 
 
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Location

 

G31Royal School of MinesSouth Kensington Campus

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Summary

 

Publications

Citation

BibTex format

@inproceedings{Ghail:2015:10.1680/ecsmge.60678,
author = {Ghail, RC and Mason, PJ and Skipper, JA},
doi = {10.1680/ecsmge.60678},
pages = {3523--3528},
title = {The geological context and evidence for incipient inversion of the London Basin},
url = {http://dx.doi.org/10.1680/ecsmge.60678},
year = {2015}
}

RIS format (EndNote, RefMan)

TY  - CPAPER
AB - A reappraisal of ground investigation data across London reveal that a range of unexpected ground conditions, encountered in engineering works since Victorian times, may result from the effects of ongoing inversion of the London Basin. Site investigation borehole data and the distribution of river terrace deposits of the Thames and its tributaries reveal a complex pattern of block movements, tilting and dextral transcurrent displacement. Significant displacements (~10 m) observed in Thames terrace gravels in borehole TQ38SE1565 at the Lower Lea Crossing, showing that movement has occurred within the last ~100 ka. Restraining bends on reactivated transcurrent faults may ex-plain the occurrence of drift filled hollows, previously identified as fluvially scoured pingos, by faulting and upward migration of water on a flower structure under periglacial conditions. Mapping the location of these features constrains the location of active transcurrent faults and so helps predict the likelihood of encountering hazardous ground conditions during tunnelling and ground engineering.
AU - Ghail,RC
AU - Mason,PJ
AU - Skipper,JA
DO - 10.1680/ecsmge.60678
EP - 3528
PY - 2015///
SP - 3523
TI - The geological context and evidence for incipient inversion of the London Basin
UR - http://dx.doi.org/10.1680/ecsmge.60678
UR - http://hdl.handle.net/10044/1/26692
ER -