Paleomagnetism and Aeromagnetic Survey From Tancitaro Volcano (Central Mexico) - Paleo-Secular Variation at Low Latitudes During the Past 1 Ma
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| Format: | Artículo científico |
| Language: | en |
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Universidad Nacional Autónoma de México
2017
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| author | Rafael García-Ruiz |
| author_facet | Rafael García-Ruiz |
| contents | Paleomagnetism and Aeromagnetic Survey From Tancitaro Volcano (Central Mexico) - Paleo-Secular Variation at Low Latitudes During the Past 1 Ma Rafael García-Ruiz Avto Goguitchaichvili Hector López-Loera Miguel Cervantes-Solano Jaime Urrutia-Fucugauchi Juan Morales-Contreras Rafael Maciel-Peña José Rosas-Elguera Ciencias de la Tierra Aeromagnetics Tancitaro volcano Jaramillo excursions Paleosecular variation Geomagnetic Axial Dipole The Tancitaro volcano (TV) is part of the Michoacan-Guanajuato monogenetic volcanic field (MGVF) in the central-western sector of the Trans-Mexican Volcanic Belt (TMVB). Results of a paleomagnetic study of radiometrically dated lava flows from Tancitaro volcano were used to investigate the paleosecular variation (PSV) and time averaged field (TAF) at low latitudes. Ar-Ar dates range from ~70 to 960 kyr spanning the Brunhes and Matuyama polarity chrons. All samples yielded well defined normal polarity magnetization. Two flows are correlated to the Jaramillo polarity event, which provide a useful marker for the volcanic activity in the MGVF. For the PSV and TAF analysis, paleodirections were combined with previously reported high standard results. The aeromagnetic survey around the Tancitaro volcano was characterized by a trend of regional anomalies over the volcanic structures. The residual field showed several positive and negative anomalies. The Tancitaro volcano is marked by a broad positive anomaly suggesting the presence of a large underground source. Spectral analysis of this anomaly field gives an average estimate to the top of the source bodies between 2-3km. 2017 artículo científico 0016-7169 https://www.redalyc.org/articulo.oa?id=56851629005 en http://www.redalyc.org/revista.oa?id=568 Geofísica Internacional application/pdf Universidad Nacional Autónoma de México Geofísica Internacional (México) Num.3 Vol.56 |
| format | Artículo científico |
| id | redalyc_56851629005 |
| institution | Redalyc |
| language | en |
| publishDate | 2017 |
| publisher | Universidad Nacional Autónoma de México |
| spellingShingle | Paleomagnetism and Aeromagnetic Survey From Tancitaro Volcano (Central Mexico) - Paleo-Secular Variation at Low Latitudes During the Past 1 Ma Rafael García-Ruiz Ciencias de la Tierra Aeromagnetics Tancitaro volcano Jaramillo excursions Paleosecular variation Geomagnetic Axial Dipole Paleomagnetism and Aeromagnetic Survey From Tancitaro Volcano (Central Mexico) - Paleo-Secular Variation at Low Latitudes During the Past 1 Ma Rafael García-Ruiz Avto Goguitchaichvili Hector López-Loera Miguel Cervantes-Solano Jaime Urrutia-Fucugauchi Juan Morales-Contreras Rafael Maciel-Peña José Rosas-Elguera Ciencias de la Tierra Aeromagnetics Tancitaro volcano Jaramillo excursions Paleosecular variation Geomagnetic Axial Dipole The Tancitaro volcano (TV) is part of the Michoacan-Guanajuato monogenetic volcanic field (MGVF) in the central-western sector of the Trans-Mexican Volcanic Belt (TMVB). Results of a paleomagnetic study of radiometrically dated lava flows from Tancitaro volcano were used to investigate the paleosecular variation (PSV) and time averaged field (TAF) at low latitudes. Ar-Ar dates range from ~70 to 960 kyr spanning the Brunhes and Matuyama polarity chrons. All samples yielded well defined normal polarity magnetization. Two flows are correlated to the Jaramillo polarity event, which provide a useful marker for the volcanic activity in the MGVF. For the PSV and TAF analysis, paleodirections were combined with previously reported high standard results. The aeromagnetic survey around the Tancitaro volcano was characterized by a trend of regional anomalies over the volcanic structures. The residual field showed several positive and negative anomalies. The Tancitaro volcano is marked by a broad positive anomaly suggesting the presence of a large underground source. Spectral analysis of this anomaly field gives an average estimate to the top of the source bodies between 2-3km. 2017 artículo científico 0016-7169 https://www.redalyc.org/articulo.oa?id=56851629005 en http://www.redalyc.org/revista.oa?id=568 Geofísica Internacional application/pdf Universidad Nacional Autónoma de México Geofísica Internacional (México) Num.3 Vol.56 |
| title | Paleomagnetism and Aeromagnetic Survey From Tancitaro Volcano (Central Mexico) - Paleo-Secular Variation at Low Latitudes During the Past 1 Ma |
| topic | Ciencias de la Tierra Aeromagnetics Tancitaro volcano Jaramillo excursions Paleosecular variation Geomagnetic Axial Dipole |
| url | https://www.redalyc.org/articulo.oa?id=56851629005 |