Emplacement of Cuban Ophiolites
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| Format: | Artículo científico |
| Langue: | en |
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Universitat de Barcelona
2005
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| _version_ | 1876440462098694144 |
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| author | J. L. Cobiella-Reguera |
| author_facet | J. L. Cobiella-Reguera |
| contents | Emplacement of Cuban Ophiolites J. L. Cobiella-Reguera Ciencias de la Tierra Cuba Proto Caribbean Ophiolites Oceanic lithosphere According to their lithological and structural characteristics, three ophiolite bearing structural units arerecognized in Cuba: 1) The Northern Ophiolitic Belt, a complex mélange that stretches more than 1000km along the island; 2) The metamorphic basement of the Cretaceous Volcanic Arc Terrane; and 3) Thetectonic slices in the high pressure metamorphic Escambray (Guamuhaya) Massif of south central Cuba.The available age constrains indicate that relics of oceanic lithosphere in Cuba are Late Mesozoic in ageand probably originated in two different tectonic environments; 1) in a Late Jurassic- Neocomian smalloceanic basin resulting from drifting between North America and a southern continent; and 2) in asuprasubduction marginal basin developed between the North American passive margin and an Aptian-Albian volcanic arc. Serpentinite slices and the high pressure amphibolites in the Mesozoic metasedimentaryrocks of the Escambray (Guamuhaya) Massif originated during closure of a small oceanicbasin, possibly during the Albian. The basement metamorphic rocks of the Volcanic Arc Terrane werederived from Upper Jurassic- Neocomian oceanic crust, metamorphosed during the development on thiscrust of a Middle Cretaceous volcanic arc. Ophiolites of the northern belt were probably derived fromboth the formerly mentioned small oceanic basin and suprasubduction marginal basin, and wereemplaced in several episodes from the Campanian to the Middle Eocene. The different ophiolite types inCuba represent relics of the oceanic lithosphere (the Proto-Caribbean oceanic basin) that developedbetween North and South America after the Pangea breakup. An alternative plate tectonic model is proposedand discussed. 2005 artículo científico 1695-6133 https://www.redalyc.org/articulo.oa?id=50530305 en http://www.redalyc.org/revista.oa?id=505 Geologica Acta: an international earth science journal application/pdf Universitat de Barcelona Geologica Acta: an international earth science journal (España) Num.3 Vol.3 |
| format | Artículo científico |
| id | redalyc_50530305 |
| institution | Redalyc |
| language | en |
| publishDate | 2005 |
| publisher | Universitat de Barcelona |
| spellingShingle | Emplacement of Cuban Ophiolites J. L. Cobiella-Reguera Ciencias de la Tierra Cuba Proto Caribbean Ophiolites Oceanic lithosphere Emplacement of Cuban Ophiolites J. L. Cobiella-Reguera Ciencias de la Tierra Cuba Proto Caribbean Ophiolites Oceanic lithosphere According to their lithological and structural characteristics, three ophiolite bearing structural units arerecognized in Cuba: 1) The Northern Ophiolitic Belt, a complex mélange that stretches more than 1000km along the island; 2) The metamorphic basement of the Cretaceous Volcanic Arc Terrane; and 3) Thetectonic slices in the high pressure metamorphic Escambray (Guamuhaya) Massif of south central Cuba.The available age constrains indicate that relics of oceanic lithosphere in Cuba are Late Mesozoic in ageand probably originated in two different tectonic environments; 1) in a Late Jurassic- Neocomian smalloceanic basin resulting from drifting between North America and a southern continent; and 2) in asuprasubduction marginal basin developed between the North American passive margin and an Aptian-Albian volcanic arc. Serpentinite slices and the high pressure amphibolites in the Mesozoic metasedimentaryrocks of the Escambray (Guamuhaya) Massif originated during closure of a small oceanicbasin, possibly during the Albian. The basement metamorphic rocks of the Volcanic Arc Terrane werederived from Upper Jurassic- Neocomian oceanic crust, metamorphosed during the development on thiscrust of a Middle Cretaceous volcanic arc. Ophiolites of the northern belt were probably derived fromboth the formerly mentioned small oceanic basin and suprasubduction marginal basin, and wereemplaced in several episodes from the Campanian to the Middle Eocene. The different ophiolite types inCuba represent relics of the oceanic lithosphere (the Proto-Caribbean oceanic basin) that developedbetween North and South America after the Pangea breakup. An alternative plate tectonic model is proposedand discussed. 2005 artículo científico 1695-6133 https://www.redalyc.org/articulo.oa?id=50530305 en http://www.redalyc.org/revista.oa?id=505 Geologica Acta: an international earth science journal application/pdf Universitat de Barcelona Geologica Acta: an international earth science journal (España) Num.3 Vol.3 |
| title | Emplacement of Cuban Ophiolites |
| topic | Ciencias de la Tierra Cuba Proto Caribbean Ophiolites Oceanic lithosphere |
| url | https://www.redalyc.org/articulo.oa?id=50530305 |