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Lithological control on fracture cementation in the Keuper Marl (Triassic), north Somerset, UK

Abstract:

The spatial arrangement of gypsum veins as preserved natural hydraulic fractures have been characterized in the Triassic Keuper Marl Formation (UK), a caprock for hydrocarbon reservoirs and CO 2 sequestration. The marls cropping out are subdivided into five discrete fracture units based on the presence and abundance of gypsum veins. The nodular gypsum in evaporite horizons provides excess gypsum for nodule-rooted horizontal gypsum veins. Our petrographic observations demonstrate that the deve...

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Publication status:
Published
Peer review status:
Peer reviewed

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Publisher copy:
10.1017/S001675681700070X

Authors


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Institution:
University of Oxford
Division:
MPLS
Department:
Earth Sciences
Role:
Author
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Name:
Shell International Exploration and Production B.V
Publisher:
Cambridge University Press
Journal:
Geological Magazine More from this journal
Volume:
155
Issue:
8
Pages:
1761-1775
Publication date:
2017-09-14
Acceptance date:
2017-07-25
DOI:
EISSN:
1469-5081
ISSN:
0016-7568
Keywords:
Pubs id:
pubs:738076
UUID:
uuid:f5d00a45-9846-47da-a309-5610dda62240
Local pid:
pubs:738076
Source identifiers:
738076
Deposit date:
2017-11-16

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