Resultados gravimétricos sobre la cuenca del Golfo de San Jorge (Rep. Arg.)
Main Article Content
Abstract
In the present work, gravity measurements along NS and EW sections through the basin of San Jorge Gulf are analyzed. Towards the center of the Gulf, a gravimetric maximum on a thick sedimentary cover is found. The value of which is considerably increased when the effect of the basin is taken into account. The characteristic of such gravity anomaly suggests an excess of mass sitting in the upper crust, perhaps connected to the initial subsidence. The thick sedimentary cover developed at later times may have induced isostatic reactions.
Article Details
This work is licensed under a Creative Commons Attribution-NonCommercial-ShareAlike 4.0 International License.
References
BACAGLIO, M. C., 1979. Cálculo gravimétrico de correcciones geológicas. Fac. de Cs. Ex. e Ing. (U. N. R.). Inedito.
BAGLIETTO, E. y A. CERRATO, 1971. Contributions to applied Geodesy. Univ. Nac. de Buenos Aires.
CRIADO, R., C. DE FERRARIS, A. MINGRAMM, E. ROLLERI e I. SIMONATO, 1959. Cuencas sedimentarias de la Argentina. Boletín de Informaciones Petroleras. No. 320. pp. 816-834.
DRAGUICEVIC, M. 1970. Carta gravimetrica de los Andes meridionales. Univ. de Chile. Publicación No. 93.
GARDLAND, G. D., 1965. The Earth's shape and Gravity, Pergamon Press, 183 p.
HARRISON, J. C., 1956. An interpretation of gravity anomalies in the eastern Mediterranean. Phil. Roy. Soc. Lond. Vol. 248, pp. 283-325. DOI: https://doi.org/10.1098/rsta.1955.0017
HAXBY, W. P., D. L. TURCOTTE y J. M. BIRD, 1976. Thermal and mechanical evolution of the Michigan Basin. Tectonophysics, V. 36, pp. 57-75. DOI: https://doi.org/10.1016/B978-0-444-41549-3.50008-6
HINZE, W., R. KELLOGS y N. O'HARA, 1975. Geophysical Studies of Basement Geology of Southern Peninsula of Michigan. The Am. Assos. of Petroleum Bull. V. 59, No. 9, pp. 1562-1583. DOI: https://doi.org/10.1306/83D92005-16C7-11D7-8645000102C1865D
INTROCASO, A., 1980. A New Gravimetric Interpretation of the Salado Basin (Arg.). En prensa, en Bolletino di Geofisica Teorica ed Applicata.
INTROCASO, A., 1980. Modelos para el estudio de cuencas sedimentarias que exhiben respuestas gravimetricas positivas. Public. Observatorio Astronómico de Rosario (Rosario, Santa Fé, Argentina).
INTROCASO, A. y E. HUERTA, 1980. An automatic method of calculating vertical gravimetrical effects of cilinders with vertical axis and circular section at points external to their axis. (en prensa, Geoacta).
INSTITUTO GEOGRAFICO MILITAR ARGENTINO (I. G. M.), 1964. Base Argentina para calibración de gravímetros. Sec. Geof. Publ. 2 -1. Bs. As.
INSTITUTO GEOGRAFICO MILITAR ARGENTINO (I. G. M.), 1970. Actividades gravimétricas (Sept. 1965, sept. 1970). Buenos Aires.
LESTA, P. y R. FERRELLO, 1972. Región extra andina de Chubut y norte de Santa Cruz. Geolog. Rep. Argentina. Ac. Nac. de Ciencias, pp. 601-653. Cordoba.
LESTA, P. y M. CESANELLI, 1973. Perfiles geofísicos prospectivos regionales en la Patagonia. Geoacta, Vol 6, No. 2, pp. 77-82. Buenos Aires.
LESTA, P. 1974. Exploración de la plataforma continental Argentina. Rev. Tec. Com Y. P. F., No. 8.
LUDWING, W. J., J. EWING y M. EWING, 1968. Structure of Argentine Continental Margin. Am. Assos. Petr. Geol. Bull. Vol. 52, (12), pp. 2337-2368.
MARTIN, R., 1954. Gravity Maxima corresponding with sedimentary basin. Geophysics, Vol XIX, pp. 89-94. DOI: https://doi.org/10.1190/1.1437976
MATTAUER, M. 1976. Las deformaciones de los materiales de la corteza terrestre. Ed. Omega. 524 p.
McGINNIS, L. O., 1970. Tectonics and the gravity field in the continental interior. Jour. Geophys. Res. Vol. 75, No. 2, pp. 317-331. DOI: https://doi.org/10.1029/JB075i002p00317
SKEELS, D. C., 1963. An approximate solution of the problem of maximum depth in gravity interpretation. Geophysics, Vol 28, No. 5, pp. 724-735. DOI: https://doi.org/10.1190/1.1439262
URIEN, C. y J. J. ZAMBRANO, 1970. Estructura de la terraza continental del sur del Brasil y la Argentina (hasta los 49° S). Conf. sobre Probl. de la Tierra Sólida, Vol. II. pp. 489-500.
WOOLLARD, G. P., 1959. Crustal structure from Gravity and Seismic Measurements. Jour. Geoph. Res., Vol. 54, No. 10, pp. 1521-1541. DOI: https://doi.org/10.1029/JZ064i010p01521
WOOLLARD, G. P., 1966. Regional Isostatic Relations in the United States. Geophys. Monograph. 10. Ed. Steinhart-Smith (Am. Geoph. Union). pp. 557-594. DOI: https://doi.org/10.1029/GM010p0557
WOOLLARD, G. P., 1968. The interrelationship of the crust, the upper mantle and isostatic gravity anomalies in the United States. Am. Geoph. Union. Mon. 12, pp. 312-341. DOI: https://doi.org/10.1029/GM012p0312
ZAMBRANO, J. J., 1971. Las cuencas sedimentarias en la plataforma continental Argentina. Petrotecnia (Rev. Inst. Arg. Petr.) XXI, 4. Buenos Aires, pp. 26-37.