Abstract
Abstract Earthquake-induced paleoliquefaction features are exposed in eroding river banks at 24 sites in the lower and central Wabash Valley. North-south distribution of features is at least 165 km. Sites with very large dikes (60–250 cm wide) suggestive of lateral spreads are found near the center of the distribution and extend over an area about 35 km in diameter. Stratigraphy, sedimentology, pedology, and archaeological associations suggest that all liquefaction resulted from a single, large, middle Holocene earthquake with an epicenter in the vicinity of Vincennes, Indiana.
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