Integrated Interpretation of FALCON Airborne Gravity Gradiometer, Magnetic and Seismic data acquired over the Chirete Block, Argentina

M.L. Fernandez; J.C.S.O Lyrio; L. Braga; S.V.(Rao) Yalamanchili; A. Morgan

doi:10.1081/22020586.2010.12041928

ISSN: 2202-0586
E-ISSN:

oa Integrated Interpretation of FALCON Airborne Gravity Gradiometer, Magnetic and Seismic data acquired over the Chirete Block, Argentina
Authors M.L. Fernandez^a, J.C.S.O Lyrio^b, L. Braga^c, S.V.(Rao) Yalamanchili^d and A. Morgan^e
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^a Petrobras, Argentina, [email protected] ^b Petrobras, Brazil, [email protected] ^c Fugro, USA, [email protected] ^d Fugro, USA, [email protected] ^e Fugro, USA, [email protected]
Publisher: Australian Society of Exploration Geophysicists
Source: ASEG Extended Abstracts, Volume 2010, Issue ASEG2010 - 21st Geophysical Conference, Dec 2010, p. 1 - 4
DOI: https://doi.org/10.1081/22020586.2010.12041928
- Published online: 01 Dec 2010

Abstract

Summary

Integrated interpretation of high resolution FALCON airborne gravity gradient and magnetic data with 2D seismic data from the Chirete Block, onshore northern Argentina, provided enhanced understanding of the tectonic framework, basement configuration, and sedimentary structures.

Basement related faults/lineament maps were generated using several enhancements of gravity gradient and magnetic data. These were combined with magnetic depth estimates, seismic and gravity to create an integrated 3D basement model.

Seismic depth sections, velocities, and well logs from nearby discoveries, were used as constraints for 2.5D and 3D gravity and magnetic modeling. This enabled key sedimentary features to be identified and mapped both along and between existing seismic lines.

Several igneous provinces were identified, and are probably related to the rift and post-rift periods. A strong correlation exists between faults derived independently from seismic reflection data and enhanced Airborne Gravity Gradiometer data.

A number of structural features were identified with the mapped faulting, which may provide new targets for further interpretation or drilling

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References

Cominguez, A. H. and Ramos, V. A., 1995. Geometry and Seismic Expression of the Cretaceous Salta Rift System, Northwestern Argentina. In: Tankard A. J., Suárez R. S. and Welsink, H. J. (eds.) Petroleum basins of South America, AAPG Memoir, 62, 325–340.
Del Papa, C. E. and Salfity, J. A., 1999. Non-marine Paleogene sequences, Salta Group, Northwest Argentina. Acta Geologica Hispanica, 34 (2-3), 105-121.
Hernández, R., Disalvo, A., Boll, A. y Gómez Omil, R. 1999. Estratigrafía secuencial del Grupo Salta, con énfasis en las subcuencas de Metán-Alemania, Noroeste Argentino. En: González Bonorino, Omarini y Viramonte (Eds.): Geología del Noroeste Argentino, Relatorio 14º Congreso Geológico Argentino, 1:263-283. Salta
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Ramos, V. A., 2008. The Basement of the Central Andes: The Arequipa and Related Terranes. Annual Review, Earth and Planetary Sciences, 36, 289–324.
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Article Type: Research Article

Keyword(s): airborne; gradient-seismic-magnetic.; gravity

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oa Integrated Interpretation of FALCON Airborne Gravity Gradiometer, Magnetic and Seismic data acquired over the Chirete Block, Argentina

Abstract

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