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


Interactive discussion

Status: closed
Status: closed
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 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)
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.