A constrained 2D gravity model of the Sebastián Vizcaíno Basin, Baja California Sur, Mexico

Autor: Jose M. Romo, C. F. Flores-Luna, Juan García-Abdeslem, Enrique Gómez-Treviño, F.J. Esparza-Hernández, Jorge Ramírez-Hernández
Rok vydání: 2005
Předmět:
Zdroj: Geophysical Prospecting. 53:755-765
ISSN: 1365-2478
0016-8025
Popis: The subsurface geometry of the Sebastian Vizcaino Basin is obtained from the 2D inversion of gravity data, constrained by a density-versus-depth relationship derived from an oil exploration deep hole. The basin accumulated a thick pile of marine sediments that evolved in the fore-arc region of the compressive margin prevalent along western North America during Mesozoic and Tertiary times. Our interpretation indicates that the sedimentary infill in the Sebastian Vizcaino Basin reaches a maximum thickness of about 4 km at the centre of a relatively symmetric basin. At the location of the Suaro-1 hole, the depth to the basement derived from this work agrees with the drilled interface between calcareous and volcaniclastic members of the Alisitos Formation. A sensitivity analysis strongly suggests that the assumed density function leads to a nearly unique solution of the inverse problem.
Databáze: OpenAIRE
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