3D modeling for gravimetric inversion of offshore basins of Argentina
This paper reflects the first results of a crustal study in the South Atlantic Ocean, in the region of the shelf, slope and Argentine continental rise. In the region from 50° to 66° west longitude and 36° to 50° south latitude. A gravity model of upper continental and oceanic crust, where the geomet...
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| Lenguaje: | Español |
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Argentine Association of Geophysicists and Geodesists
2016
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| LEADER | 12051caa a22008417a 4500 | ||
|---|---|---|---|
| 001 | PAPER-16394 | ||
| 003 | AR-BaUEN | ||
| 005 | 20230518204724.0 | ||
| 008 | 170725s2016 xx ||||fo|||| 00| 0 spa|d | ||
| 024 | 7 | |2 scopus |a 2-s2.0-84978141332 | |
| 040 | |a Scopus |b spa |c AR-BaUEN |d AR-BaUEN | ||
| 100 | 1 | |a Pizarro, G. | |
| 245 | 1 | 0 | |a 3D modeling for gravimetric inversion of offshore basins of Argentina |
| 246 | 3 | 1 | |a Modelado 3D por inversión gravimetrica de cuencas off shore de Argentina |
| 260 | |b Argentine Association of Geophysicists and Geodesists |c 2016 | ||
| 506 | |2 openaire |e Política editorial | ||
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| 504 | |a Arecco, M.A., Ruiz, F., Pizarro, G., Giménez, M., Martinez, P., Ramos, V.A., Gravimetric determination of the continental-oceanic boundary of the Argentine continental margin (from 36° S to 50° S) (2015) Geophysical Journal International, 204 (1), pp. 366-385 | ||
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| 504 | |a Brocher, T.M., Empirical relations between elastic wave speeds and density in the Earth's crust (2005) Bulletin of the Seismological Society of America, 95 (6), pp. 2081-2092 | ||
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| 504 | |a Figueroa, D., Marshall, P., Prayitno, W., Cuencas Atlánticas de Aguas Profundas: Principales plays (2005) VI Congreso de Exploración y Desarrollo de Hidrocarburos, pp. 325-335. , IAPG (Mar del Plata), Actas | ||
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| 504 | |a Hinz, K., Neben, S., Schreckenberger, B., Roeser, H.A., Block, M., Goncalves De Souza, K., Meyer, H., The Argentine continental margin north of 48° S: Sedimentary successions, volcanic activity during breakup (1999) Marine and Petroleum Geology, 16, pp. 1-25 | ||
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| 504 | |a Lafehr, T.R., Standardization in gravity reduction (1991) Geophysics, Society of Exploration Geophysicists, (Ed.), 56 (8), pp. 1170-1178 | ||
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| 504 | |a Ludwig, W.J., Carpenter, G., Houtz, R.E., Lonardi, A.G., Ríos, F.F., (1978) Sediment Isopach Map of the Argentine Continental Margin, Argentine Shelf, Argentine Basin and Falkland Plateau, , American Association of Petroleum Geologists, Tulsa, Oklahoma 74101 | ||
| 504 | |a Ludwig, W.J., Nafe, J.E., Drake, C.L., Seismic refraction (1970) The Sea. Ideas and Observationns on Progress in the Study of the Seas, 4, pp. 53-84. , A.E.Maxwell (Ed.), New Concepts of Sea Floor Evolution, Part II. Regional Observation Concepts. Wiley Interscience, New York | ||
| 504 | |a Ludwig, W.J., Ewing, J.I., Ewing, M., Structure of Argentine continental margin (1968) American Association of Petroleum Geologists Bulletin, 52 (12), pp. 2337-2368 | ||
| 504 | |a Neben, A., Franke, D., Hinz, K., Schreckenberger, B., Meyer, H., Roeser, H.A., Early opening of the south atlantic: Pre-rift extension and episodicity of seaward dipping reflector sequence (SDRS) emplacement on the conjugate Argentine and Namibia continental margins (2002) AAPG Hedberg Conference: Hydrocarbon Habitat of Volcanic Rifted Passive Margins, , Stavanger, Noruega. Actas | ||
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| 504 | |a Pizarro, G., Ruiz, F., Arecco, M.A., Martínez, M.P., Giménez, M.E., Modelo de moho gravimétrico para las cortezas continental y oceánica argentinas calculado desde datos gravimétricos satelitales (2012) COMTEC, Conferencia Microsoft, , Fortaleza, Brasil, Julio 14 | ||
| 520 | 3 | |a This paper reflects the first results of a crustal study in the South Atlantic Ocean, in the region of the shelf, slope and Argentine continental rise. In the region from 50° to 66° west longitude and 36° to 50° south latitude. A gravity model of upper continental and oceanic crust, where the geometry and boundaries of the Argentina basin is emphasized, is presentedIn order to obtain the gravitational effect of the basins offshore, a sequence of filters applied to the gravimetric anomalies. To do this: A) Bouguer anomalies with topographic correction (ABCT) were calculated. B) The upper crust was normalized by deduct the gravitational effect of the basins to the ABCT, from global models isobaths, obtaining Bouguer anomalies with geological correction (ABCG). C) A regional was obtained by upward extension to the height of 20 km (RegUp20), optimal height separation effects according to the power spectrum of ABCG. D) The gravitational effect of the crust (ResCS) was obtained by the difference between ABCT and RegUp20, this has the effect of residual basins and intrusive bodies in middle and upper crust (SDRs), these bodies are outlined as conspicuous anomalies of 50-100 km wavelength. E) In order to obtain the gravitational effect of the sediments that fill the basin the positive effects of SDRs (seaward-dipping reflectors) were removed, applying an isostatic decompensated correction (DA) under the concept of local compensation. Thus the residual anomaly of continental margin basins (ResCC) or residual anomaly of corrected crust, which allows evaluating in its entirety the boundaries and depth of the basin was obtained. A 3D model, three-layer, calculated by inverting the residual gravimetric ResCC prepared. In this variable density values for sediment and constant for the upper crust, lower and upper mantle are considered. These results allowed us to obtain the boundaries of the Argentina Basin. Revealing gravimetric aspects related to the morphology and constitution of the upper crust in the continental margin. © 2015 Asociación Argentina de Geofísicos y Geodestas. |l eng | |
| 593 | |a Instituto Geofísico-Sismológico Volponi (IGSV), Facultad de Ciencias Exactas, Físicas y Naturales, Universidad Nacional de San Juan, Argentina | ||
| 593 | |a Departamento de Biología, Facultad de Ciencias Exactas Físicas y Naturales, Universidad Nacional de San Juan, Argentina | ||
| 593 | |a Instituto de Geodesia y Geofísica Aplicadas, Facultad de Ingeniería, Universidad de Buenos Aires, Argentina | ||
| 593 | |a Escuela de Ciencias Del Mar, Instituto Universitario Naval, Armada Argentina, Argentina | ||
| 593 | |a Instituto Antártico Argentino, Buenos Aires, Argentina | ||
| 690 | 1 | 0 | |a 3D MODEL |
| 690 | 1 | 0 | |a DEPTH OF BASEMENT |
| 690 | 1 | 0 | |a GRAVITY INVERSION |
| 690 | 1 | 0 | |a OFFSHORE BASINS |
| 651 | 4 | |a BASIN ARGENTINA | |
| 700 | 1 | |a Arecco, M.A. | |
| 700 | 1 | |a Ruiz, F. | |
| 700 | 1 | |a Ghidella, M. | |
| 773 | 0 | |d Argentine Association of Geophysicists and Geodesists, 2016 |g v. 40 |h pp. 11-27 |k n. 2 |x 03267237 |w (AR-BaUEN)CENRE-1725 |t Geoacta | |
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| 856 | 4 | 0 | |u https://hdl.handle.net/20.500.12110/paper_03267237_v40_n2_p11_Pizarro |y Handle |
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