Articles | Volume 9, issue 6
Solid Earth, 9, 1437–1468, 2018
https://doi.org/10.5194/se-9-1437-2018
Solid Earth, 9, 1437–1468, 2018
https://doi.org/10.5194/se-9-1437-2018

Research article 12 Dec 2018

Research article | 12 Dec 2018

Formation of linear planform chimneys controlled by preferential hydrocarbon leakage and anisotropic stresses in faulted fine-grained sediments, offshore Angola

Sutieng Ho et al.

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Status: closed
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AC: Author comment | RC: Referee comment | SC: Short comment | EC: Editor comment
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Peer-review completion

AR: Author's response | RR: Referee report | ED: Editor decision
AR by Sutieng Ho on behalf of the Authors (30 Sep 2018)  Author's response    Manuscript
ED: Referee Nomination & Report Request started (02 Oct 2018) by Elias Samankassou
RR by Andreia Plaza-Faverola (02 Nov 2018)
RR by Anonymous Referee #2 (03 Nov 2018)
RR by Anonymous Referee #3 (05 Nov 2018)
ED: Publish subject to minor revisions (review by editor) (12 Nov 2018) by Elias Samankassou
AR by Sutieng Ho on behalf of the Authors (18 Nov 2018)  Author's response    Manuscript
ED: Publish as is (23 Nov 2018) by Elias Samankassou
ED: Publish as is (23 Nov 2018) by Elias Samankassou(Executive Editor)
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Short summary
A newly discovered type of hydrocarbon leakage structure is investigated following the preliminary works of Ho (2013; et al. 2012, 2013, 2016): blade-shaped gas chimneys instead of classical cylindrical ones. These so-called Linear Chimneys are hydraulic fractures caused by overpressured hydrocarbon fluids breaching cover sediments along preferential directions. These directions are dictated by anisotropic stresses induced by faulting in sediments and pre-existing salt-diapiric structures.