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Evidence of a collision between the Yucatán Block and Mexico in the Miocene

Kim, YoungHee and Clayton, Robert W. and Keppie, Fraser (2011) Evidence of a collision between the Yucatán Block and Mexico in the Miocene. Geophysical Journal International, 187 (2). pp. 989-1000. ISSN 0956-540X. doi:10.1111/j.1365-246X.2011.05191.x.

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We present the evidence for an anomalous southwest-dipping slab in southern Mexico. The main evidence comes from a clear receiver function image along a seismic line across the Isthmus of Tehuantepec and is also supported by a previous global tomographic model. The slab dips at 35°, is approximately 250 km in length and appears to truncate the Cocos slab at about 120 km depth. We hypothesize that the slab was created by subduction of oceanic lithosphere prior to the collision of the Yucatán Block with Mexico at approximately 12 Ma. This scenario would explain the Chiapas Fold and Thrust Belt as the product of this collision, and its age constrains the date of the event to be in the Miocene.

Item Type:Article
Related URLs:
URLURL TypeDescription DOIArticle
Kim, YoungHee0000-0002-1111-632X
Clayton, Robert W.0000-0003-3323-3508
Additional Information:© 2011 The Authors. Geophysical Journal International © 2011 RAS. Accepted 2011 August 10. Received 2011 July 29; in original form 2011 June 1. Article first published online: 15 Sep. 2011. This study was supported by the Gordon and Betty Moore Foundation through the Tectonics Observatory at California Institute of Technology (Contribution number 131) and NSF award EAR 0609707. We thank Xyoli Pérez-Campos, Arturo Iglesias and others at the Universidad Nacional Autónoma de México for deploying and maintaining the VEOX line. We also thank Servicio Sismológico Nacional (SSN) of Mexico for data and Oscar Alberto Castro Artola for the relocated seismicity from the VEOX line. We also thank Joann Stock from California Institute of Technology for discussions. Finally, we thank Editor Christine Thomas and two anonymous reviewers for helpful comments which improved the manuscript.
Group:Caltech Tectonics Observatory, Seismological Laboratory
Funding AgencyGrant Number
Gordon and Betty Moore FoundationUNSPECIFIED
Subject Keywords:Seismicity and tectonics; Body waves; Seismic tomography; Subduction zone processes; Dynamics of lithosphere and mantle; Dynamics: seismotectonics
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Other Numbering System NameOther Numbering System ID
Caltech Tectonics Observatory131
Issue or Number:2
Record Number:CaltechAUTHORS:20111219-095119813
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Official Citation:Kim, Y., Clayton, R. W. and Keppie, F. (2011), Evidence of a collision between the Yucatán Block and Mexico in the Miocene. Geophysical Journal International, 187: 989–1000. doi: 10.1111/j.1365-246X.2011.05191.x
Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:28512
Deposited By: Tony Diaz
Deposited On:20 Dec 2011 22:56
Last Modified:09 Nov 2021 16:58

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