Migration of reflector orientation attributes in deep seismic profiles: evidence for decoupling of the Yilgarn Craton lower crust

Calvert, Andrew J.; Doublier, Michael P.

doi:https://doi.org/10.5194/se-10-637-2019

Articles | Volume 10, issue 3

https://doi.org/10.5194/se-10-637-2019

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

Special issue:

Advances in seismic imaging across the scales

https://doi.org/10.5194/se-10-637-2019

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

Articles | Volume 10, issue 3

Research article

|

14 May 2019

Research article |

| 14 May 2019

Migration of reflector orientation attributes in deep seismic profiles: evidence for decoupling of the Yilgarn Craton lower crust

Andrew J. Calvert and Michael P. Doublier

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Final revised paper (published on 14 May 2019)
Preprint (discussion started on 20 Feb 2019)

Interactive discussion

Status: closed

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

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- Supplement

RC1: 'Comments from Don White, Geological Survey of Canada', Don White, 22 Mar 2019
- AC1: 'Responses to Reviewer 1: Don White', Andrew Calvert, 18 Apr 2019
RC2: 'Comment by C. Juhlin', Christopher Juhlin, 24 Mar 2019
- AC2: 'Response to Reviewer 2: Chris Juhlin', Andrew Calvert, 18 Apr 2019

Peer-review completion

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

AR by Andrew Calvert on behalf of the Authors (18 Apr 2019) Author's response Manuscript

ED: Publish as is (24 Apr 2019) by Michal Malinowski

ED: Publish as is (24 Apr 2019) by CharLotte Krawczyk (Executive editor)

AR by Andrew Calvert on behalf of the Authors (24 Apr 2019)

Short summary

Deep (> 40 km) seismic reflection surveys are acquired on land along crooked roads. Using the varying azimuth between source and receiver, the true 3-D orientation of crustal structures can be determined. Applying this method to a survey over the ancient Australian Yilgarn Craton reveals that most reflectors in the lower crust exhibit a systematic dip perpendicular to those in the overlying crust, consistent with lateral flow of a weak lower crust in the hotter early Earth 2.7 billion years ago.