Editors: Allan Ludman and David P. West, Jr.
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Forty kilometers wide and perhaps 1200 km long, the dextral Norumbega fault system is one of the major structures of the northern Appalachians. Differential erosion provides a mid- through shallow-crustal profile of the Norumbega system, offering insight into the mechanics and evolution of modern faults such as the San Andreas. This volume incorporates field, petrographic, geochemical, geochronological, and geophysical studies in a four-dimensional picture of the Norumbega. Three papers describe deformation style and mechanics from deep, intermediate, and shallow segments of the system; they are followed by two views of how it might continue as far south as Long Island Sound. Four papers address possible tectonic roles of the system, placing it in context with other northern Appalachian faults and examining geochemical evidence for the Norumbega system being a major terrane boundary. Two papers detail the system's 200-million multistage deformation history, and the final contribution examines the possibility that the Norumbega is active today.
Published: 6/09/1999
ISBN Number: 0813723310
Pages: 202
Product Category: Special Papers