Lithosphere tearing along STEP faults and synkinematic formation of lherzolite and wehrlite in the shallow subcontinental mantle

Hidas, Károly; Garrido, Carlos J.; Booth-Rea, Guillermo; Marchesi, Claudio; Bodinier, Jean-Louis; Dautria, Jean-Marie; Louni-Hacini, Amina; Azzouni-Sekkal, Abla

doi:https://doi.org/10.5194/se-10-1099-2019

Articles | Volume 10, issue 4

https://doi.org/10.5194/se-10-1099-2019

© Author(s) 2019. This work is distributed under
the Creative Commons Attribution 4.0 License.

https://doi.org/10.5194/se-10-1099-2019

© Author(s) 2019. This work is distributed under
the Creative Commons Attribution 4.0 License.

Articles | Volume 10, issue 4

Research article

|

10 Jul 2019

Research article |

| 10 Jul 2019

Lithosphere tearing along STEP faults and synkinematic formation of lherzolite and wehrlite in the shallow subcontinental mantle

Károly Hidas, Carlos J. Garrido, Guillermo Booth-Rea, Claudio Marchesi, Jean-Louis Bodinier, Jean-Marie Dautria, Amina Louni-Hacini, and Abla Azzouni-Sekkal

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Final revised paper (published on 10 Jul 2019)
Supplement to the final revised paper
Preprint (discussion started on 27 Feb 2019)
Supplement to the preprint

Interactive discussion

Status: closed

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

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- Supplement

RC1: 'Review', Theodoros Ntaflos, 27 Mar 2019
- AC1: 'Reply to Reviewer-1 (Theodoros Ntaflos)', Károly Hidas, 31 May 2019
RC2: 'Review', Rachel E. Bernard, 30 Mar 2019
- AC2: 'Reply to Reviewer-2 (Rachel E. Bernard)', Károly Hidas, 31 May 2019
RC3: 'Review_se-2019-32', Vasileios Chatzaras, 12 Apr 2019
- AC3: 'Reply to Reviewer-3 (Vasileios Chatzaras)', Károly Hidas, 31 May 2019

Peer-review completion

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

AR by Károly Hidas on behalf of the Authors (31 May 2019) Author's response Manuscript

ED: Publish as is (11 Jun 2019) by Florian Fusseis

ED: Publish as is (12 Jun 2019) by Federico Rossetti (Executive editor)

AR by Károly Hidas on behalf of the Authors (13 Jun 2019) Author's response Manuscript

Short summary

Subduction-transform edge propagator (STEP) faults are the locus of continual lithospheric tearing at the edges of subducted slabs, resulting in sharp changes in the lithospheric thickness and triggering lateral and/or near-vertical mantle flow. Here, we study upper mantle rocks recovered from a STEP fault context by < 4 Ma alkali volcanism. We reconstruct how the microstructure developed during deformation and coupled melt–rock interaction, which are promoted by lithospheric tearing at depth.