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Abstract

Roman Ramos, J. R., M. A. Cruz Mercado, L. E. Salomon Mora, C. Rosas Lara, F. Sanchez Ferrer, E. Biegert, and E. Bartsch, 2009, Continental-oceanic boundary deep structure in a shear margin: Western main transform, offshore Veracruz, Southern Gulf of Mexico, in C. Bartolini and J. R. Roman Ramos, eds., Petroleum systems in the southern Gulf of Mexico: AAPG Memoir 90, p. 409–420.

DOI:10.1306/13191094M903416

Copyright copy2009 by The American Association of Petroleum Geologists.

Continental-Oceanic Boundary Deep Structure in a Shear Margin: Western Main Transform, Offshore Veracruz, Southern Gulf of Mexico

Juan R. Roman Ramos,1 Miguel A. Cruz Mercado,2 Luis E. Salomon Mora,3 Carlos Rosas Lara4 Fernando Sanchez Ferrer,5 Ed Biegert,6 Erik Bartsch,7

1Petroleos Mexicanos (PEMEX), Exploracion y Produccion, Mexico
2Petroleos Mexicanos (PEMEX), Exploracion y Produccion, Mexico
3Petroleos Mexicanos (PEMEX), Exploracion y Produccion, Mexico
4Petroleos Mexicanos (PEMEX), Exploracion y Produccion, Mexico
5Shell International EampP, Houston, U.S.A.
6Shell International EampP, Houston, U.S.A.
7Shell International EampP, Houston, U.S.A.

ABSTRACT

Gravity, magnetic, and heat-flow data suggest that the western main transform shear margin is associated with a transform deformation zone having considerable lateral extent. Inboard of this zone lays a continental crust, whereas outboard to the east of the large gravity anomaly associated with this structure lays an oceanic crust. The basement complex in the deformation zone is likely to be a heavily modified continental crust intruded with magnetic and higher density crustal material.

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