Sr-Nd-Pb isotope and trace element geochemistry of calc –alkaline andesites from Volcán Colima, Mexico
Sr-Nd-Pb isotope and trace element geochemistry of calc –alkaline andesites from Volcán Colima, Mexico
| dc.creator | Verma, Surendra P. | |
| dc.creator | Luhr, James F. | |
| dc.date | 2013-06-10 | |
| dc.date.accessioned | 2018-03-16T15:54:38Z | |
| dc.date.available | 2018-03-16T15:54:38Z | |
| dc.identifier | http://ojs.unam.mx/index.php/geofisica/article/view/39851 | |
| dc.identifier.uri | http://repositorioslatinoamericanos.uchile.cl/handle/2250/1203521 | |
| dc.description | We report Sr, Nd and Pb isotopic compositions and trace element data on calc-alkaline andesites from Volcán Colima and compare them with other volcanic centers of the Mexican Volcanic Belt. The chondrite-normalized REE patterns of Colima andesites show LREE-enrichment with negligible Eu anomalies. MORB and primitive mantre normalized multi-element plots show negative Ta and Ti anomalies in Colima andesites. The isotope ratios range from 0.70355-0.70358 for 87Sr/86Sr, 0.51295-0.51298 for 143Nd/144Nd, and 18.57-18.59, 15.56-15.58 y 38.27-38.31 for 206Pb/204Pb, 207Pb/204Pb and 208Pb/204Pb respectively. The Sr and Pb isotope ratios are considerably lower and 143Nd/144Nd higher than in most andesites from the Mexican Volcanic Belt. | en-US |
| dc.description | Se reportan los datos de elementos traza y las composiciones isotópicas de Sr, Nd y Pb en andesitas calco-alcalinas del Volcán Colima y se comparan con otros centros volcánicos del Cinturón Volcánico Mexicano. Los patrones de elementos de Tierras Raras normalizados con respecto a condritas demuestran un enriquecimiento en Tierras Raras ligeras y anomalías despreciables de Eu. Otros diagramas multi-elementos normalizados con respecto a MORB y manto ”primitivo” demuestran anomalías negativas de Ta y Ti en las andesitas de Colima. Las relaciones isotópicas varían de 0.70355-0.70358 para 87Sr/86Sr, 0.51295-0.51298 para 143Nd/144Nd, y 18.57-18.59, 15.56-15.58 y 38.27-38.31 para 206Pb/204Pb, 207Pb/204Pb y 208Pb/204Pb respectivamente. Las relaciones isotópicas de Sr y Pb son significativamente menores y 143Nd/144Nd mayor que para la mayoría de las andesitas del Cinturón Volcánico Mexicano. | es-ES |
| dc.format | application/pdf | |
| dc.language | spa | |
| dc.publisher | Instituto de Geofísica | es-ES |
| dc.relation | http://ojs.unam.mx/index.php/geofisica/article/view/39851/36267 | |
| dc.source | Geofísica Internacional; Vol 32, No 4 (1993) | es-ES |
| dc.source | 0016-7169 | |
| dc.subject | Colima, Mexican Volcanic Belt, calc-alkaline, Mexico. | en-US |
| dc.subject | Colima, Cinturón Volcánico Mexicano, calco-alcalino, México. | es-ES |
| dc.title | Sr-Nd-Pb isotope and trace element geochemistry of calc –alkaline andesites from Volcán Colima, Mexico | en-US |
| dc.title | Sr-Nd-Pb isotope and trace element geochemistry of calc –alkaline andesites from Volcán Colima, Mexico | es-ES |
| dc.type | Artículos de revistas | |
| dc.type | Artículos de revistas |