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.
https://resolver.caltech.edu/CaltechAUTHORS:20111219-095119813
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Abstract
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 |
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| 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. |
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| Group: | Caltech Tectonics Observatory, Seismological Laboratory |
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| Funders: | | Funding Agency | Grant Number |
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| Gordon and Betty Moore Foundation | UNSPECIFIED | | NSF | EAR-0609707 |
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| 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: | | Other Numbering System Name | Other Numbering System ID |
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| Caltech Tectonics Observatory | 131 |
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| Issue or Number: | 2 |
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| DOI: | 10.1111/j.1365-246X.2011.05191.x |
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| Record Number: | CaltechAUTHORS:20111219-095119813 |
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| Persistent URL: | https://resolver.caltech.edu/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
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| Usage Policy: | No commercial reproduction, distribution, display or performance rights in this work are provided. |
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| ID Code: | 28512 |
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| Collection: | CaltechAUTHORS |
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| Deposited By: |
Tony Diaz
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| Deposited On: | 20 Dec 2011 22:56 |
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| Last Modified: | 09 Nov 2021 16:58 |
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