Basement configuration of the northwestern south america -caribbean margin from recent geophysical data Report as inadecuate




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James N. Kellogg ; Germán Y. Ojeda ;CT&F Ciencia, Tecnología y Futuro 2007, 3 (3)

Author: John F. Cerón

Source: http://www.redalyc.org/


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CT&F Ciencia, Tecnología y Futuro ISSN: 0122-5383 ctyf@ecopetrol.com.co ECOPETROL S.A. Colombia Cerón, John F.; Kellogg, James N.; Ojeda, Germán Y. Basement configuration of the northwestern south America -Caribbean margin from recent geophysical data CT&F Ciencia, Tecnología y Futuro, vol.
3, núm.
3, diciembre, 2007, pp.
25-49 ECOPETROL S.A. Bucaramanga, Colombia Available in: http:--www.redalyc.org-articulo.oa?id=46530302 How to cite Complete issue More information about this article Journals homepage in redalyc.org Scientific Information System Network of Scientific Journals from Latin America, the Caribbean, Spain and Portugal Non-profit academic project, developed under the open access initiative BASEMENT CONFIGURATION OF THE NORTHWESTERN SOUTH AMERICA CARIBBEAN MARGIN FROM RECENT GEOPHYSICAL DATA John F.
Cerón1*, James N.
Kellogg2, and Germán Y.
Ojeda3 1Ecopetrol S.A.
– Calle 37 No 8-43, Bogotá, Colombia of Geological Sciences, University of South Carolina, Columbia, S.C., USA 3Ecopetrol S.A.- Instituto Colombiano del Petróleo, A.A.
4185 Bucaramanga, Santander, Colombia 2Department e-mail: jceron@ecopetrol.com.co (Received Sept.
25, 2007; Accepted Oct.
29, 2007) he oceanic nature of the crust in northern Colombia (underlying the Lower Magdalena Basins) has been postulated by different authors as a northern extension of the Cretaceous, mafic and ultramafic rocks accreted to the western margin of northwest Colombia (in the Western Cordillera and Baudo range).
Localized, small outcrops of oceanic affinity rocks seem to support this hypothesis.
However, geophysical data do not support this northern extension, but clearly mark the boundary between the collisional Panamá terrane with northern South America and the over thrusting of the latter on top of the obliquely convergent Caribbean plate. T We produced maps to basement and Moho topography by integrated modeling of gravity, magnetics, seismic reflection surveys and well data from northwes...





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