Scientists have discovered strike-slip faults on the icy moons of our solar system, similar to those seen at the San Andreas fault in California. These faults occur when fault walls slide sideways past each other. New research from the University of Hawai‘i at Mānoa, led by earth and space scientist
The southern Cascadia forearc undergoes a three-stage tectonic evolution, each stage involving different combinations of tectonic drivers, that produce differences in the upper-plate deformation style. These drivers include subduction, the northward migration of the Mendocino triple junction (MTJ) and associated thickening and thinning related to the Mendocino Crustal Conveyor (MCC) effect, and the NNW translation of the Sierra Nevada-Great Valley (SNGV) block. We combine geodetic data, plate reconstructions, seismic tomography and topographic observations to determine how the southern Cascadia upper plate is deforming in response to the combined effects of subduction and NNW-directed (MCC- and SNGV-related) tectonic processes. The location of the terrane boundaries between the relatively weak Franciscan complex and the stronger KMP and SNGV block has been a key control on the style of upper-plate deformation in the southern Cascadia forearc since the mid-Miocene. At ~15 Ma, present-da
then you go well above that. so maybe 7.5. okay. so a 9 would, as it was troublesome for japan would be troublesome for us? yes, except a 9 does not come from the type of faults around that reactor site. that is the other thing you have to consider. the very large earthquakes that japan saw are what are known as subduction zone earthquakes where one piece of ground goes under another. and the other flaults, slip faults like that, you simply don t get 9s in those. secretary stephen chu, appreciate your time. thank you. up next, we will go to cnn s arwa damon who just saw some of the effects of the air strikes near benghazi. firsthand. hoice. push your onstar button and you could be one of them. even if you re not an onstar customer. just push your blue button and tell the advisor