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Resultats globals: 7 registres trobats en 0.02 segons.
Articles, 7 registres trobats
Articles 7 registres trobats  
1.
18 p, 19.9 MB Meso-Neoproterozoic basic-intermediate mafic granulites (metabasites) from the ∼1 Ga granulitic southwestern Oaxacan complex, Mexico, crustal evolution and phase equilibria modeling / Culí i Verdaguer, Laura (Universitat Autònoma de Barcelona. Departament de Geologia) ; Reche Estrada, Joan (Universitat Autònoma de Barcelona. Departament de Geologia) ; Solé, Jesús (Universidad Nacional Autónoma de México. Instituto de Geología) ; Ortega-Gutiérrez, Fernando (Universidad Nacional Autónoma de México. Instituto de Geología)
The basement of eastern Mexico is made up of Grenvillian granulite-facies metamorphic rocks, which constitute an inferred microcontinent named Oaxaquia. Proto-Oaxaquia oceanic arc reconstructions are related to the transition from Columbia to Rodinia supercontinents (∼1. [...]
2023 - 10.1016/j.lithos.2023.107239
Lithos, Vol. 454-455 (October 2023) , art. 107239  
Registre complet - Creative Commons
2.
18 p, 6.3 MB Volcanic sequence in Late Triassic - Jurassic siliciclastic and evaporitic rocks from Galeana, NE Mexico / Cruz-Gámez, Esther María (Universidad Autónoma de Nuevo León (Mèxic). Facultad de Ciencias de la Tierra) ; Velasco-Tapia, Fernando (Universidad Autónoma de Nuevo León (Mèxic). Facultad de Ciencias de la Tierra) ; Ramírez Fernández, Juan Alonso (Universidad Autónoma de Nuevo León (Mèxic). Facultad de Ciencias de la Tierra) ; Jenchen, Uwe (Universidad Autónoma de Nuevo León (Mèxic). Facultad de Ciencias de la Tierra) ; Rodríguez-Saavedra, Pedro (Universidad Autónoma de Nuevo León (Mèxic). Facultad de Ciencias de la Tierra) ; Rodríguez-Díaz, Augusto Antonio (Universidad Nacional Autónoma de México. Instituto de Geofísica) ; Iriondo, Alexander (Universidad Nacional Autónoma de México. Centro de Geociencias)
In northeastern Mexico, volcanic rocks interbedded with Late Triassic-Jurassic siliciclastic and evaporitic strata have been linked to magmatic arcs developed in the Pangea western margin during its initial phase of fragmentation. [...]
2017 - 10.1344/GeologicaActa2017.15.2.2
Geologica acta, Vol. 15 Núm. 2 (june 2017) , p. 89-106  
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3.
20 p, 4.4 MB Geochemistry and Geochronology of the Guajira Eclogites, northern Colombia : evidence of a metamorphosed primitive Cretaceous Caribbean Island-arc / Weber, M. (Universidad Nacional de Colombia) ; Cardona, A. (Smithsonian Tropical Research Institute) ; Valencia, V. (The University of Arizona. Department of Geosciences) ; Altenberger, U. (Potsdam Universität) ; López-Martínez, M. (Centro de Investigación Científica y de Educación Superior de Ensenada (Mèxic). Departamento de Geología) ; Tobón, M. (Universidad Nacional de Colombia) ; Zapata, S. (Universidad Nacional de Colombia) ; Zapata, G. (Universidad Nacional de Colombia) ; Concha, A. E. (Universidad Nacional de Colombia)
The chemical composition of eclogites, found as boulders in a Tertiary conglomerate from the Guajira Peninsula, Colombia suggests that these rocks are mainly metamorphosed basaltic andesites. They are depleted in LILE elements compared to MORB, have a negative Nb-anomaly and flat to enriched REE patterns, suggesting that their protoliths evolved in a subduction related tectonic setting. [...]
2011 - 10.1344/105.000001740
Geologica acta, Vol. 9, Núm. 3-4 (setembre-desembre 2011) , p. 425-443  
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4.
29 p, 1.3 MB Pre-arc basement complex and overlying early island arc strata, Southwestern Puerto Rico : overview, geologic evolution, and revised data bases / Lidiak, E. G. (University of Pittsburgh. Department of Geology and Planetary Science) ; Jolly, W. T. (Brock University. Department of Earth Sciences) ; Dickin, A. P. (McMaster University. Department of Geography and Geology)
The pre-arc basement complex in southwestern Puerto Rico consists of rocks exposed in the Bermeja complex. The oldest rocks are highly serpentinized peridotites that occur in three belts (Monte del Estado, Río Guanajibo, and Sierra Bermeja). [...]
2011 - 10.1344/105.000001715
Geologica acta, Vol. 9, Núm. 3-4 (setembre-desembre 2011) , p. 273-287  
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5.
10 p, 1.3 MB On the origin of the North Pacific arcs / Gelabert Ferrer, Bernardí (Universitat de les Illes Balears. Departament de Ciències de la Terra) ; Sàbat i Montserrat, Francesc (Universitat de Barcelona. Departament de Dinàmica de la Terra i de l'Oceà) ; Rodríguez Perea, Antonio (Universitat de les Illes Balears. Departament de Ciències de la Terra) ; Fornós, Joan J. (Universitat de les Illes Balears. Departament de Ciències de la Terra)
We present a new hypothesis that relates global plate tectonics to the formation of marginal basins, island arcs, spreading ridges and arc-shaped mountain belts around the North Pacific Ocean. According to our model, the ellipsoidal-shaped Paleogene basins of the South China Sea, Parece-Vela Basin, Shikoku Basin, Sea of Japan and the Sea of Okhotsk in addition to those of the North American Cordillera can be attributed to the change in plate convergence direction at 42 Ma between the Indoaustralian and Eurasian plates. [...]
2004 - 10.1344/105.000001427
Geologica acta, Vol. 2, Núm. 3 (2004) , p. 203-212  
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6.
19 p, 12.9 MB Primitive Cretaceous island-arc volcanic rocks in eastern Cuba : the Téneme Formation / Proenza, Joaquín A. (Universitat de Barcelona. Departament de Cristal·lografia, Mineralogia i Dipòsits Minerals) ; Díaz-Martínez, Roberto (Instituto Superior Minero Metalúrgico de Moa. Departamento de Geología) ; Iriondo, Alexander (Universidad Nacional Autónoma de México. Centro de Geociencias) ; Marchesi, Claudio (Universidad de Granada. Departamento de Mineralogía y Petrología) ; Melgarejo Draper, Joan Carles (Universitat de Barcelona. Departament de Cristal·lografia, Mineralogia i Dipòsits Minerals) ; Gervilla, Fernando (Universidad de Granada. Departamento de Mineralogía y Petrología) ; Garrido Marín, Carlos Jesus (Universidad de Granada. Departamento de Mineralogía y Petrología) ; Rodríguez Vega, Antonio (Instituto Superior Minero Metalúrgico de Moa. Departamento de Geología) ; Lozano Santacruz, Rufino (Universidad Nacional Autónoma de México. Instituto de Geología) ; Blanco-Moreno, Jesús Antonio (Instituto Superior Minero Metalúrgico de Moa. Departamento de Geología)
The Téneme Formation is located in the Mayarí-Cristal ophiolitic massif and represents one of the three Cretaceous volcanic Formations established in northeastern Cuba. Téneme volcanics are cut by small bodies of 89. [...]
2006 - 10.1344/105.000000360
Geologica acta, Vol. 4, Núm. 1-2 (2006) , p. 103-121  
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7.
27 p, 2.4 MB Cretaceous to Mid-Eocene pelagic sediment budget in Puerto Rico and the Virgin Islands (northeast Antilles Island arc) / Jolly, W. T. (Brock University. Department of Earth Sciences) ; Lidiak, E. G. (University of Pittsburgh. Department of Geology and Planetary Science) ; Dickin, A. P. (McMaster University. Department of Geology and Geography)
Island arc basalts (IAB) in the Greater Antilles, dating between Albian and mid-Eocene time (~112 to 45 Ma), consist of an early low-K, primitive island arc (PIA) basalt series and a later, predominantly intermediate calcalkaline (CA) series. [...]
2006 - 10.1344/105.000000357
Geologica acta, Vol. 4, Núm. 1-2 (2006) , p. 35-62  
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