ABSTRACT

Exposures of salt diapirs and flanking strata in La Popa basin, in the Mexican states of Nuevo León and Coahuila, contain world-class examples of salt–sediment interaction that provided the basis for the concept of halokinetic sequences. The basin also contains one of the first secondary salt welds described in outcrop. The two-day field trip described here provides an easily accessible overview of salt–sediment relations within a short distance of Monterrey, the capital city of Nuevo León. The first day constitutes an introduction to basin stratigraphy, a traverse through halokinetic sequences at El Papalote diapir, and visits to the Cretaceous–Paleogene boundary bed and a salt-cored detachment fold near the town of Hidalgo, north of Monterrey. The second day is a visit to La Popa salt weld, where stops at several parts of the weld permit comparison of different structural styles developed along the weld. The trip begins and ends at the Marriott Courtyard Hotel, near the Monterrey airport.

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