Magnetostratigraphy of the volcanic sequence of Río Grande de Santiago-Sierra de la Primavera region, Jalisco, western Mexico
New paleomagnetic results for 13 sites in volcanic units from Huaxtla, Paso de Guadalupe and Lazo sections in the Río Grande de Santiago (RGS) canyon and for 5 sites in the silicic center of Sierra de la Primavera (SP) are used to document a preliminary magnetostratigraphy for the Trans-Mexican Volc...
| Autores: | , , , , , , , , |
|---|---|
| Formato: | artículo |
| Estado: | Versión publicada |
| Fecha de publicación: | 2000 |
| País: | México |
| Recursos: | UNIVERSIDAD NACIONAL AUTÓNOMA DE MÉXICO |
| Repositorio: | Geofísica Internacional |
| Idioma: | español |
| OAI Identifier: | oai:revistagi.geofisica.unam.mx:article/699 |
| Acesso em linha: | http://revistagi.geofisica.unam.mx/index.php/RGI/article/view/699 |
| Access Level: | acceso abierto |
| Palavra-chave: | Magnetoestratigrafía Neógeno rocas volcánicas Sierra Madre Occidental Cinturón Volcánico Transmexicano oeste de México Magnetostratigraphy Neogene volcanic rocks Trans-Mexican Volcanic Belt western Mexico |
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Magnetostratigraphy of the volcanic sequence of Río Grande de Santiago-Sierra de la Primavera region, Jalisco, western Mexico Magnetostratigraphy of the volcanic sequence of Río Grande de Santiago-Sierra de la Primavera region, Jalisco, western Mexico |
| title |
Magnetostratigraphy of the volcanic sequence of Río Grande de Santiago-Sierra de la Primavera region, Jalisco, western Mexico |
| spellingShingle |
Magnetostratigraphy of the volcanic sequence of Río Grande de Santiago-Sierra de la Primavera region, Jalisco, western Mexico Urrutia Fucugauchi, J. Magnetoestratigrafía Neógeno rocas volcánicas Sierra Madre Occidental Cinturón Volcánico Transmexicano oeste de México Magnetostratigraphy Neogene volcanic rocks Sierra Madre Occidental Trans-Mexican Volcanic Belt western Mexico |
| title_short |
Magnetostratigraphy of the volcanic sequence of Río Grande de Santiago-Sierra de la Primavera region, Jalisco, western Mexico |
| title_full |
Magnetostratigraphy of the volcanic sequence of Río Grande de Santiago-Sierra de la Primavera region, Jalisco, western Mexico |
| title_fullStr |
Magnetostratigraphy of the volcanic sequence of Río Grande de Santiago-Sierra de la Primavera region, Jalisco, western Mexico |
| title_full_unstemmed |
Magnetostratigraphy of the volcanic sequence of Río Grande de Santiago-Sierra de la Primavera region, Jalisco, western Mexico |
| title_sort |
Magnetostratigraphy of the volcanic sequence of Río Grande de Santiago-Sierra de la Primavera region, Jalisco, western Mexico |
| dc.creator.none.fl_str_mv |
Urrutia Fucugauchi, J. Alva Valdivia, L. M. Rosas Elguera, J. Campos-Enríquez, O. Goguitchaichvili, A. Soler Arechalde, A. M. Caballero Miranda, C. Venegas Salgado, S. Sánchez Reyes, S. |
| author |
Urrutia Fucugauchi, J. |
| author_facet |
Urrutia Fucugauchi, J. Alva Valdivia, L. M. Rosas Elguera, J. Campos-Enríquez, O. Goguitchaichvili, A. Soler Arechalde, A. M. Caballero Miranda, C. Venegas Salgado, S. Sánchez Reyes, S. |
| author_role |
author |
| author2 |
Alva Valdivia, L. M. Rosas Elguera, J. Campos-Enríquez, O. Goguitchaichvili, A. Soler Arechalde, A. M. Caballero Miranda, C. Venegas Salgado, S. Sánchez Reyes, S. |
| author2_role |
author author author author author author author author |
| dc.subject.none.fl_str_mv |
Magnetoestratigrafía Neógeno rocas volcánicas Sierra Madre Occidental Cinturón Volcánico Transmexicano oeste de México Magnetostratigraphy Neogene volcanic rocks Sierra Madre Occidental Trans-Mexican Volcanic Belt western Mexico |
| topic |
Magnetoestratigrafía Neógeno rocas volcánicas Sierra Madre Occidental Cinturón Volcánico Transmexicano oeste de México Magnetostratigraphy Neogene volcanic rocks Sierra Madre Occidental Trans-Mexican Volcanic Belt western Mexico |
| description |
New paleomagnetic results for 13 sites in volcanic units from Huaxtla, Paso de Guadalupe and Lazo sections in the Río Grande de Santiago (RGS) canyon and for 5 sites in the silicic center of Sierra de la Primavera (SP) are used to document a preliminary magnetostratigraphy for the Trans-Mexican Volcanic Belt (TMVB) volcanic sequence. The magnetostratigraphic results are correlated with data for 7 nearby sites in the RGS and 6 sites in the SP, and with available K–Ar dates. A geothermal exploratory well drilled by the Federal Comission of Electricity in the SP allowed recovery of samples down to a depth of 1361 m, and 8 core samples were studied for paleomagnetism distributed between depths of 93 m to 1358-1361 m. Normal (N), interme- diate (I) and reverse ( R) polarities are documented in the volcanic sequence of RGS at Huaxtla, Paso de Guadalupe and Lazo sections, as well as in the domes and lava sequences of the SP. The three sections studied in the RGS are around 800 m thick, and include a basal rhyolitic ignimbrite (R), the San Cristóbal basalts (mainly R), rhyolites and ash flows of the Guadalajara group (mainly R), the San Gaspar ignimbrite (N), basaltic flows and a rhyolitic dome (N). The SP sequence rests on an andesitic sequence and includes a rhyolite, the San Cristóbal basalts (R), rhyolites and an andesitic flow of the Guadalajara group (R), ash flow tuffs, pre-caldera rhyolites, the Tala tuff (R, I), and intra-caldera lacustrine deposits. The San Cristóbal basalts represent the oldest TMVB units, with dates between 11 and 8 Ma. This interval corresponds to a normal polarity chron that contrasts with the dominant reverse polarity observed in RGS and SP. The normal polarity San Gaspar ignimbrite has been dated at 4.7–4.8 Ma, and provides a marker horizon in the Guadalajara region. This ignimbrite and the units of the Guadalajara group (with dates of 5.2–5.5 Ma) are assigned to the Gilbert R chron, with the San Gaspar ignimbrite possibly corresponding to the Thevera N subchron (4.59– 4.79 Ma). The silicic sequence of SP represents the young activity in the region and is assigned to the Brunhes chron. |
| publishDate |
2000 |
| dc.date.none.fl_str_mv |
2000-07-01 |
| dc.type.none.fl_str_mv |
info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion |
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article |
| status_str |
publishedVersion |
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http://revistagi.geofisica.unam.mx/index.php/RGI/article/view/699 10.22201/igeof.00167169p.2000.39.3.329 |
| url |
http://revistagi.geofisica.unam.mx/index.php/RGI/article/view/699 |
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10.22201/igeof.00167169p.2000.39.3.329 |
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spa |
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spa |
| dc.relation.none.fl_str_mv |
http://revistagi.geofisica.unam.mx/index.php/RGI/article/view/699/692 |
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https://creativecommons.org/licenses/by-nc-sa/4.0/ info:eu-repo/semantics/openAccess |
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https://creativecommons.org/licenses/by-nc-sa/4.0/ |
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openAccess |
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application/pdf |
| dc.publisher.none.fl_str_mv |
Universidad Nacional Autónoma de México. Instituto de Geofísica |
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Universidad Nacional Autónoma de México. Instituto de Geofísica |
| dc.source.none.fl_str_mv |
Geofisica Internacional; Vol. 39 No. 3 (2000): July 1, 2000; 247-265 Geofísica Internacional; Vol. 39 Núm. 3 (2000): Julio 1, 2000; 247-265 2954-436X 0016-7169 10.22201/igeof.00167169p.2000.39.3 reponame:Geofísica Internacional instname:UNIVERSIDAD NACIONAL AUTÓNOMA DE MÉXICO instacron:UNAM |
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UNIVERSIDAD NACIONAL AUTÓNOMA DE MÉXICO |
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UNAM |
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UNAM |
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Geofísica Internacional |
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Geofísica Internacional |
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1858175844015407104 |
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Magnetostratigraphy of the volcanic sequence of Río Grande de Santiago-Sierra de la Primavera region, Jalisco, western Mexico Magnetostratigraphy of the volcanic sequence of Río Grande de Santiago-Sierra de la Primavera region, Jalisco, western Mexico Urrutia Fucugauchi, J.Alva Valdivia, L. M.Rosas Elguera, J.Campos-Enríquez, O.Goguitchaichvili, A.Soler Arechalde, A. M.Caballero Miranda, C.Venegas Salgado, S.Sánchez Reyes, S.MagnetoestratigrafíaNeógenorocas volcánicasSierra Madre OccidentalCinturón Volcánico Transmexicanooeste de MéxicoMagnetostratigraphyNeogenevolcanic rocksSierra Madre OccidentalTrans-Mexican Volcanic Beltwestern MexicoNew paleomagnetic results for 13 sites in volcanic units from Huaxtla, Paso de Guadalupe and Lazo sections in the Río Grande de Santiago (RGS) canyon and for 5 sites in the silicic center of Sierra de la Primavera (SP) are used to document a preliminary magnetostratigraphy for the Trans-Mexican Volcanic Belt (TMVB) volcanic sequence. The magnetostratigraphic results are correlated with data for 7 nearby sites in the RGS and 6 sites in the SP, and with available K–Ar dates. A geothermal exploratory well drilled by the Federal Comission of Electricity in the SP allowed recovery of samples down to a depth of 1361 m, and 8 core samples were studied for paleomagnetism distributed between depths of 93 m to 1358-1361 m. Normal (N), interme- diate (I) and reverse ( R) polarities are documented in the volcanic sequence of RGS at Huaxtla, Paso de Guadalupe and Lazo sections, as well as in the domes and lava sequences of the SP. The three sections studied in the RGS are around 800 m thick, and include a basal rhyolitic ignimbrite (R), the San Cristóbal basalts (mainly R), rhyolites and ash flows of the Guadalajara group (mainly R), the San Gaspar ignimbrite (N), basaltic flows and a rhyolitic dome (N). The SP sequence rests on an andesitic sequence and includes a rhyolite, the San Cristóbal basalts (R), rhyolites and an andesitic flow of the Guadalajara group (R), ash flow tuffs, pre-caldera rhyolites, the Tala tuff (R, I), and intra-caldera lacustrine deposits. The San Cristóbal basalts represent the oldest TMVB units, with dates between 11 and 8 Ma. This interval corresponds to a normal polarity chron that contrasts with the dominant reverse polarity observed in RGS and SP. The normal polarity San Gaspar ignimbrite has been dated at 4.7–4.8 Ma, and provides a marker horizon in the Guadalajara region. This ignimbrite and the units of the Guadalajara group (with dates of 5.2–5.5 Ma) are assigned to the Gilbert R chron, with the San Gaspar ignimbrite possibly corresponding to the Thevera N subchron (4.59– 4.79 Ma). The silicic sequence of SP represents the young activity in the region and is assigned to the Brunhes chron.Resultados paleomagnéticos nuevos del Cañón de Río Grande de Santiago (RGS), correspondientes a 13 sitios en unidades volcánicas de las secciones de Huaxtla, Paso de Guadalupe y Lazo, así como de 5 sitios de la Sierra de la Primavera, se utilizan con el fin de documentar la magnetoestratigrafía preliminar de las secuencias volcánicas del Cinturón Volcánico Transmexicano (TMVB). Los resultados magnetoestratigráficos se correlacionan con datos de 7 sitios cercanos del RGS, con 6 sitios de la SP y con fechamientos K-Ar disponibles. Un pozo geotérmico exploratorio de la Comisión Federal de Electricidad en la SP permitió la recuperación de muestras hasta los 1361 m, así como el estudio paleomagnético de 8 muestras de núcleo distribuidas entre 93 m y 1358-1361 m. En la secuencia volcánica de RGS de las secciones de Huaxtla, Paso de Guadalupe y Lazo, así como en los domos y secuencias lávicas de la SP, se documentan polaridades normales (N), intermedias (I) y reversas (R). Las tres secuencias estudiadas en el RGS son de alrededor de 800 m de espesor, incluyen una secuencia ignimbrítica basal (R), los basaltos San Cristóbal (principalmente R), riolitas y flujos de cenizas del grupo Guadalajara (principalmente R), la ignimbrita San Gaspar (N), flujos basálticos y un domo riolítico (N). La secuencia de la SP descansa sobre una secuencia andesítica e incluye una riolita, los basaltos San Cristóbal (R), riolitas y flujo andesítico del grupo Guadalajara (R), tobas de flujo de cenizas, riolitas de precaldera, la toba Tala (R, I) y los depósitos lacustres de intra-caldera. Los basaltos San Cristóbal representan la unidad más antigua de la TMVB, con edades entre 11 y 8 Ma. Este intervalo corresponde a un crón de polaridad normal en la escala de tiempo de polaridad geomagnética, lo que contrasta con la polaridad reversa dominante observada en el RGS y la SP. La polaridad normal de la ignimbrita San Gaspar ha sido fechada en 4.7-4.8 Ma y constituye un horizonte marcador en la región de Guadalajara. Esta ignimbrita y las unidades del grupo Guadalajara (con fechas de 5.2-5.5 Ma) son asignadas al crón reverso Gilbert, con la ignimbrita San Gaspar posiblemente correspondiendo al subcrón normal Thevera (4.59-4.79 Ma). La secuencia silícea de la SP representa la reciente actividad volcánica en la región y se asigna al crón Brunhes.Universidad Nacional Autónoma de México. Instituto de Geofísica2000-07-01info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionapplication/pdfhttp://revistagi.geofisica.unam.mx/index.php/RGI/article/view/69910.22201/igeof.00167169p.2000.39.3.329Geofisica Internacional; Vol. 39 No. 3 (2000): July 1, 2000; 247-265Geofísica Internacional; Vol. 39 Núm. 3 (2000): Julio 1, 2000; 247-2652954-436X0016-716910.22201/igeof.00167169p.2000.39.3reponame:Geofísica Internacionalinstname:UNIVERSIDAD NACIONAL AUTÓNOMA DE MÉXICOinstacron:UNAMspahttp://revistagi.geofisica.unam.mx/index.php/RGI/article/view/699/692https://creativecommons.org/licenses/by-nc-sa/4.0/info:eu-repo/semantics/openAccessoai:revistagi.geofisica.unam.mx:article/6992024-08-16T17:31:57Z |
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15.812429 |