dor_id: 4133264

506.#.#.a: Público

590.#.#.d: Los artículos enviados a la revista "Geofísica Internacional", se juzgan por medio de un proceso de revisión por pares

510.0.#.a: Consejo Nacional de Ciencia y Tecnología (CONACyT); Scientific Electronic Library Online (SciELO); SCOPUS, Dialnet, Directory of Open Access Journals (DOAJ); Geobase

561.#.#.u: https://www.geofisica.unam.mx/

650.#.4.x: Físico Matemáticas y Ciencias de la Tierra

336.#.#.b: article

336.#.#.3: Artículo de Investigación

336.#.#.a: Artículo

351.#.#.6: http://revistagi.geofisica.unam.mx/index.php/RGI

351.#.#.b: Geofísica Internacional

351.#.#.a: Artículos

harvesting_group: RevistasUNAM

270.1.#.p: Revistas UNAM. Dirección General de Publicaciones y Fomento Editorial, UNAM en revistas@unam.mx

590.#.#.c: Open Journal Systems (OJS)

270.#.#.d: MX

270.1.#.d: México

590.#.#.b: Concentrador

883.#.#.u: https://revistas.unam.mx/catalogo/

883.#.#.a: Revistas UNAM

590.#.#.a: Coordinación de Difusión Cultural

883.#.#.1: https://www.publicaciones.unam.mx/

883.#.#.q: Dirección General de Publicaciones y Fomento Editorial

850.#.#.a: Universidad Nacional Autónoma de México

856.4.0.u: http://revistagi.geofisica.unam.mx/index.php/RGI/article/view/1079/1010

100.1.#.a: Cameron, M.; Spaulding, K.; Cameron, K. L.

524.#.#.a: Cameron, M., et al. (1987). A synthesis and comparison of the geochemistry of volcanic rocks of the Sierra Madre Occidental and Mexican Volcanic Belt. Geofísica Internacional; Vol. 26 Núm. 1: Enero 1, 1987; 29-84. Recuperado de https://repositorio.unam.mx/contenidos/4133264

245.1.0.a: A synthesis and comparison of the geochemistry of volcanic rocks of the Sierra Madre Occidental and Mexican Volcanic Belt

502.#.#.c: Universidad Nacional Autónoma de México

561.1.#.a: Instituto de Geofísica, UNAM

264.#.0.c: 1987

264.#.1.c: 1987-01-01

653.#.#.a: Geoquímica; rocas volcánicas; Geochemistry; volcanic rocks; sierra madre occidental; faja volcánica mexicana

506.1.#.a: La titularidad de los derechos patrimoniales de esta obra pertenece a las instituciones editoras. Su uso se rige por una licencia Creative Commons BY-NC-SA 4.0 Internacional, https://creativecommons.org/licenses/by-nc-sa/4.0/legalcode.es, para un uso diferente consultar al responsable jurídico del repositorio por medio del correo electrónico revistagi@igeofisica.unam.mx

884.#.#.k: http://revistagi.geofisica.unam.mx/index.php/RGI/article/view/1079

001.#.#.#: 063.oai:revistagi.geofisica.unam.mx:article/1079

041.#.7.h: spa

520.3.#.a: The Cenozoic-Recent volcanic rocks of mainland Mexico are largely confined to three provinces: the Sierra Madre Occidental (SMO), the Trans-Mexican Volcanic Belt (MVB), and the Eastern Alkalic province. The first two provinces are dominated by calc-alkalic rock series, but minor amounts of contemporaneous alkaline rocks are also present. The third province is comprised largely of alkaline volcanics. Comparison of the two calc-alkalic provinces reveals that each has distinct characteristics. The mid-Tertiary SMO volcanics are comprised largely of rhyolitic ignimbrites whereas the MVB is characterized by prominent neovolcanic centers that are primarily andesitic in composition. Calc-alkalic andesites from the western MVB (e.g., Ceboruco) have chemical characteristics that are distinct from andesites of the central MVB (e.g., Colima, Paricutfn, Orizaba, Jorullo, Popocatepetl, Toluca). The andesites of Ceboruco have higher Na20+ K20, K20, Na20, Ti02, P20s, Ba, La, and (Ce/Yb)N and lower CaO, MgO, Cr, and Ba/La than andesites of the central MVB. Calc-alkalic andesites from the northern SMO (Batopilas area) and from the central MVB have similar total alkalies, K20, Na20, CaO, Sr, Zr and (Ce/Yb)N. The SMO andesites also have lower MgO and K/Rb and higher FeO*, Ti02, Rb, Th, La, andY than calc-alkalic rocks of the central MVB. Initial Sr isotopic ratios of compositionallyintermediate MVB volcanics are restricted to the range 0.7035-0.7047 whereas the intermediate-felsic volcanics of the SMO have Sri ranging between 0. 7033 and 0. 7614. Such ratios indicate significant interaction of parental magmas with old radiogenic crust for the SMO volcanics, but relatively minor, if any, interaction with magmas parental to the MVB volcanics. Limited Nd isotopic data for MVB calc-alkalic volcanics (Colima, Los Humeros, Paricutfn, and La Primavera) generally have ENd greater than Bulk Earth (up to +5 to +6). Volcanics of the northern SMO (Batopilas area) and southeastern Chihuahua have ENd within ±2.5 units of Bulk Earth. Evolution of the rock suites at individual eruptive centers appears to have been controlled largely by cristal fractionation. Other processes operative at the same time may include magma mixing and crustal assimilation (the latter especially in the SMO). The nature of the source regions for parental magmas of volcanics in both the MVB and SMO-SEC areas has yet to be addressed in a comprehensive manner.doi: https://doi.org/10.22201/igeof.00167169p.1987.26.1.1189

773.1.#.t: Geofísica Internacional; Vol. 26 Núm. 1: Enero 1, 1987; 29-84

773.1.#.o: http://revistagi.geofisica.unam.mx/index.php/RGI

022.#.#.a: ISSN-L: 2954-436X; ISSN impreso: 0016-7169

310.#.#.a: Trimestral

300.#.#.a: Páginas: 29-84

264.#.1.b: Instituto de Geofísica, UNAM

doi: https://doi.org/10.22201/igeof.00167169p.1987.26.1.1189

handle: 609dca1e6c3c5082

harvesting_date: 2023-06-20 16:00:00.0

856.#.0.q: application/pdf

file_creation_date: 2008-06-25 22:09:49.0

file_modification_date: 2022-07-14 04:08:22.0

file_creator: M. Cameron

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245.1.0.b: A synthesis and comparison of the geochemistry of volcanic rocks of the Sierra Madre Occidental and Mexican Volcanic Belt

last_modified: 2023-06-20 16:00:00

license_url: https://creativecommons.org/licenses/by-nc-sa/4.0/legalcode.es

license_type: by-nc-sa

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