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Environmental and Engineering Geoscience

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Net Dextral Slip, Neogene San Gregorio-Hosgri Fault Zone, Coastal California: Geologic Evidence and Tectonic Implications

(W. R. Dickinson, M. Ducea, L. I. Rosenberg, H. G. Greene, S. A. Graham, J. C. Clark, G. E. Weber, S. Kidder, W. G. Ernst, and E. E. Brabb)

¹ 1003 LaBella Lane, Big Arm, MT 59910

The first 20% of the full text of this article appears below.

One of the world's most dangerous faults, the San Andreas, lies along the "Ring of Fire," yet is not directly influenced by modern subduction action and is in a region of California that is without the presence of active, or even intact, volcanoes. In the future, the behavior of this great fault system may jeopardize the lives of millions of people, and yet the nature of seismicity in this central section of the San Andreas has its own special character. It comes to this reviewer that the broad and segmented nature of the Santa Lucia Range likely absorbs and, perhaps, diffuses considerable transient tectonic stress with its own poorly understood potential for generating large, damaging earthquakes. Furthermore, this portion of California is one of the world's most highly complex tectonic jigsaw puzzles, and the authors have provided the first truly coherent interpretation of how the region is traversed by the San Andreas and its sister splay, the San Gregorio-Hosgri Fault Zone.

This special paper offers great, broad value to those practicing in the field of engineering seismology, which is, in my opinion, a valid discipline of engineering geology. In . . . [Full Text of this Article]