Kees A. De Jong, J. Armando Escarcega-Escarcega, Paul E. Damon; Eastward thrusting, southwestward folding, and westward backsliding in the Sierra La Vibora, Sonora, Mexico. Geology ; 16 (10): 904–907. doi: https://doi.org/10.1130/0091-7613(1988)016<0904:ETSFAW>2.3.CO;2
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In the Sierra La Vibora near Caborca, Mexico, three structures occur: a thrust sheet of crystalline basement overlain by Proterozoic and Cambrian sedimentary formations thrust eastward upon Mesozoic clastics; asymmetric and overturned folds, northwest-southeast oriented, with southwest vergence; and low-angle extensional faults with top-to-the-west transport. The Pitiquito granodiorite, dated at 80 Ma by K-Ar techniques, was intruded after the thrusting, and the youngest rocks affected by thrusting are Albian to Cenomanian(?), indicating that thrusting occurred between about 95 and 80 Ma.