Throw variations and strain partitioning associated with fault-bend folding along normal faults

Delogkos, Efstratios; Saqab, Muhammad Mudasar; Walsh, John J.; Roche, Vincent; Childs, Conrad

doi:https://doi.org/10.5194/se-11-935-2020

Articles | Volume 11, issue 3

https://doi.org/10.5194/se-11-935-2020

© Author(s) 2020. This work is distributed under
the Creative Commons Attribution 4.0 License.

https://doi.org/10.5194/se-11-935-2020

© Author(s) 2020. This work is distributed under
the Creative Commons Attribution 4.0 License.

Articles | Volume 11, issue 3

Research article

|

28 May 2020

Research article |

| 28 May 2020

Throw variations and strain partitioning associated with fault-bend folding along normal faults

Efstratios Delogkos, Muhammad Mudasar Saqab, John J. Walsh, Vincent Roche, and Conrad Childs

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Final revised paper (published on 28 May 2020)
Preprint (discussion started on 02 Dec 2019)

Interactive discussion

Status: closed

AC: Author comment | RC: Referee comment | SC: Short comment | EC: Editor comment

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- Supplement

RC1: 'Delogkos et al review', Oliver B. Duffy, 05 Feb 2020
- AC1: 'Reply to comments', Efstratios Delogkos, 16 Apr 2020
RC2: 'Review for "Throw variations and strain partitioning associated with fault-bend folding along normal faults"', Zoe Mildon, 28 Feb 2020
- AC2: 'Reply to comments', Efstratios Delogkos, 16 Apr 2020

Peer-review completion

AR: Author's response | RR: Referee report | ED: Editor decision

AR by Efstratios Delogkos on behalf of the Authors (17 Apr 2020) Author's response Manuscript

ED: Publish as is (27 Apr 2020) by Mark Allen

ED: Publish as is (27 Apr 2020) by Federico Rossetti (Executive editor)

AR by Efstratios Delogkos on behalf of the Authors (29 Apr 2020)

Short summary

Normal faults have irregular geometries on a range of scales. A quantitative model has been presented which illustrates the range of deformation arising from movement on fault surface irregularities, with fault-bend folding generating geometries reminiscent of normal drag and reverse drag. We show that fault throw can be subject to errors of up to ca. 50 % for realistic fault bend geometries (up to ca. 40°), even on otherwise sub-planar faults with constant displacement.