Fault Zone along Northern Boundary of Western Snake River Plain, Idaho

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Science  31 Jul 1959:
Vol. 130, Issue 3370, pp. 272
DOI: 10.1126/science.130.3370.272


Gravity, seismic, and geologic studies indicate that at least 9000 ft of aggregate throw along a zone of northwest-trending, high-angle faults has displaced the western Snake River Plain downward relative to highlands on the north. At least 5000 ft of movement occurred between the early and middle Pliocene. Progressively diminishing movement since then amounts to 4000 ft.