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On 4 April, 2010, the El Mayor-Cucapah earthquake occurred in NW Baja California, Mexico. It was magnitude 7.2 strike-slip event, and the (surface) ruptures were distributed over a set of faults in the area, among them the Laguna Salada Fault. The epicentral area was under surveillance by a technique similar to DInSAR –  Uninhabited Aerial
Vehicle Synthetic Aperture Radar (UAVSAR). Comparison of images from before and after the M7.2 earthquake revealed that slip occurred not only in the epicentral area and at the Laguna Salada Fault, but also on faults to the north. These findings were recently published by Donnellan et al. (2014). more

The Friends of the Pleistocene went on a fieldtrip few days ago to study the 4D Architecture of an Oblique Rift Margin in Baja California, NW Mexico. The tour focussed on the paleoseismology of the Borrega and Laguna Salada Faults, especially on the 1982 and 2010 surface ruptures, and took place fom 27 February to 2 March, 2014. You can download the detailed field guide and the road log here. more