HR: 1330h
AN: T43B-08    [Abstracts]
TI: Processes in Environmental Depositional Systems and Deformation in Sedimentary Basins: Goals for Exoloration in Mexico
AU: * SANDOVAL-OCHOA, J
EM: jhsandovalochoa@cancun.fi-a.unam.mx
AB: Among the recent needs to establish new goals in the mexican energy industry to increase the petroleum reserves, has been necessary to recapitulate on some academic an operative concepts and definitions applied to the Petroliferous Basins Exploration; first of all, in order to understand the Petroleum System in given tectonophysical framework. The tectonophysical environment experienced by the petroliferous basin in the southwestern Gulf of Mexico, merely in the Campeche Sound and adjacent terrestrial regions (Figure 1); has been the result of interaction among the tectonic plates, the Coco's Plate with impingement and subduction beneath the Northamerican Plate and the Yucat n Microplate and even in very deep connection with the oceanic crust of southwesternmost portion of the Gulf of Mexico and the one of the Caribbean sea beneath the gulf of Belize-Honduras. The tectonosedimentary effects in the Campeche Bay starting with the skeleton formed for the Cenozoic Era, kept simultaneous conditions in depositions and deformations because of strain, stress and collapse fields, acted through this Era up to the present day, as observed in the surface Aguayo et al, 1999 and Sandoval, 2000. The involved portions of the crust and its boundaries have also been performing the relative sinking of the mere southwestern centre of the Gulf of Mexico, and the rising of the southeastern lands of Mexico. In the middle contiguity are found the productive Tertiary basins of: Comalcalco, Macuspana, Salina del Itsmo, Campeche-Champoton and other in deep waters; all of them, in an arrangement of basins among distensive faulted blocks in echelon, falling down to the deep centre of the Gulf Sandoval, op cit. With this scenario and that ones of other basins, a recapitulation on concepts and definitions, has been made on the regional natural processes of the environmental depositional systems and on the basins analysis in the tectonophysical framework, in order to reflect on the depositional and formational rather than deformational natural processes, and under a new paradigm; that include: "gas", "Tertiary", "sands", "shallow" and "structural formation"; once that the hydrocarbon reservoir systems is known. The paradigm also results in benefit for the hydrocarbon exploration of any basin, even, when it is previously known. In this review the concepts and the identification of the nature of the regional processes have been reconsidered as can be seen in the disciplines of the Enviromental Depositional Systems and the Basin Analysis for hydrocarbons in the framework of the Tectonophysics. It has been the marine-terrestrial scenario in southwestern Gulf of M‚xico after a regional integrated study with the Advanced Geomorphometry and Geophysics. Likewise in this review, the deformational phenomena has been included, such as salt or mud solifluxion associated in some way with the basamental or tectonostructural movements. All of those which are apparently chaotic in the local aspect, have shown, at least since the Tertiary, an order in the regional aspect. In this terms all depositional and deformational-formational phenomena in a regional scale, obey to more than one of the four natural depositional-formational processes Sandoval, 2002 which are ubicuitus and permanent in relative terms.
UR: http://www.agu.org
DE: 0930 Oceanic structures
DE: 1206 Crustal movements--interplate (8155)
DE: 3022 Marine sediments--processes and transport
DE: 8015 Local crustal structure
DE: 8105 Continental margins and sedimentary basins
SC: Tectonophysics [T]
MN: 2005 Joint Assembly