Southwest migration of the instantaneous Rivera-Pacific Euler pole since 0.78 Ma
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| Formato: | Artículo científico |
| Lenguaje: | en |
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Universidad Nacional Autónoma de México
1998
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| _version_ | 1876434909214539776 |
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| author | V. Kostoglodov |
| author_facet | V. Kostoglodov |
| contents | Southwest migration of the instantaneous Rivera-Pacific Euler pole since 0.78 Ma V. Kostoglodov C. A. Mortera Gutiérrez W. L. Bandy Ciencias de la Tierra Mexico Rivera plate Colima Graben recent plate motions Establishing an Euler pole/vector which accurately describes the present-day motion between the Rivera and Pacificplates has proved difficult. This is likely due to systematic errors in the plate motion data; errors arising from a SW migration ofthe Rivera-Pacific Euler pole during the past several million years. A new estimate of the present-day instantaneous Rivera-Pacific Euler pole is derived herein using only the most recently formed bathymetric features along the Rivera-Pacific boundaries.This Euler pole (24.62°N, 105.89°W) lies significantly SW of all the previous pole determinations, indicating a continued (2° ormore) SW migration of the Rivera-Pacific Euler pole during the last 0.78 Ma. Although many uncertainties remain to be resolved,this migration provides a simple explanation for the discrepancies between predicted plate motions and (1) the observed azimuthsof the eastern end of the Rivera transform, (2) the extensional morphology of the Rivera-Cocos boundary, and (3) the rates ofRIV-NA and Cocos-North America motion across the Rivera-Cocos boundary as indicated from seismotectonic relationships. 1998 artículo científico 0016-7169 https://www.redalyc.org/articulo.oa?id=56837302 en http://www.redalyc.org/revista.oa?id=568 Geofísica Internacional application/pdf Universidad Nacional Autónoma de México Geofísica Internacional (México) Num.3 Vol.37 |
| format | Artículo científico |
| id | redalyc_56837302 |
| institution | Redalyc |
| language | en |
| publishDate | 1998 |
| publisher | Universidad Nacional Autónoma de México |
| spellingShingle | Southwest migration of the instantaneous Rivera-Pacific Euler pole since 0.78 Ma V. Kostoglodov Ciencias de la Tierra Mexico Rivera plate Colima Graben recent plate motions Southwest migration of the instantaneous Rivera-Pacific Euler pole since 0.78 Ma V. Kostoglodov C. A. Mortera Gutiérrez W. L. Bandy Ciencias de la Tierra Mexico Rivera plate Colima Graben recent plate motions Establishing an Euler pole/vector which accurately describes the present-day motion between the Rivera and Pacificplates has proved difficult. This is likely due to systematic errors in the plate motion data; errors arising from a SW migration ofthe Rivera-Pacific Euler pole during the past several million years. A new estimate of the present-day instantaneous Rivera-Pacific Euler pole is derived herein using only the most recently formed bathymetric features along the Rivera-Pacific boundaries.This Euler pole (24.62°N, 105.89°W) lies significantly SW of all the previous pole determinations, indicating a continued (2° ormore) SW migration of the Rivera-Pacific Euler pole during the last 0.78 Ma. Although many uncertainties remain to be resolved,this migration provides a simple explanation for the discrepancies between predicted plate motions and (1) the observed azimuthsof the eastern end of the Rivera transform, (2) the extensional morphology of the Rivera-Cocos boundary, and (3) the rates ofRIV-NA and Cocos-North America motion across the Rivera-Cocos boundary as indicated from seismotectonic relationships. 1998 artículo científico 0016-7169 https://www.redalyc.org/articulo.oa?id=56837302 en http://www.redalyc.org/revista.oa?id=568 Geofísica Internacional application/pdf Universidad Nacional Autónoma de México Geofísica Internacional (México) Num.3 Vol.37 |
| title | Southwest migration of the instantaneous Rivera-Pacific Euler pole since 0.78 Ma |
| topic | Ciencias de la Tierra Mexico Rivera plate Colima Graben recent plate motions |
| url | https://www.redalyc.org/articulo.oa?id=56837302 |