By Ruth A. M. Schmidt, Warren J. Nokleberg, Robert A. Page
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Extra info for Alaskan Geological and Geophysical Transect
Coney, and G. J. L. S. Geol. Surv. Open-File Report, 84-523, p. AlA2, 1984. , Duplex structures and imbricate thrust systems: Geometry, structural position, and hydrocarbon potential, Am. Assoc. Petrol. ->Geol. 70 1087-1112, 1986. , D L. J. Silberling, Origin and tectonic evolution of the Maclaren and Wrangellia terranes, eastern Alaska Range, Alaska, Geol. Soc. Amer. , 96, 1251-1270, 1985. , G. S. J. L. L. Campbell, Accretion and subduction tectonics in the Chugach Mountains and Copper river basin, Alaska: Initial results of the TransAlaska Crustal Transect, Geology, 14,501-505, 1986.
In this area, the Peninsular terrane consists of volcanic conglomerate and sandstone, medium-bedded, fine-grained dacite and hornblende andesite tuffs or flows, and lesser chert. The volcanic conglomerate and sandstone varies from thick bedded to massive and locally contains clasts up to 10 cm long of greenstone and volcanic porphyry in a matrix of coarse sand-size greenstone, quartz, white feldspar sand that varies from angular to rounded. Local pebble imbrication occurs in some layers. Local submarine ashflow and waterlaid tuffs, locally silicified, also occur within the volcanic conglomerates and sandstones.
Flueh, E. , W. D. Mooney, G. S. Fuis, and E. L. Ambos, Crustal structure of the Chugach Mountains, southern Alaska: a study of peg-leg multiples from a low-velocity zone, Journal of Geophysical Research, 1989, in press. Fuis, G. , and G. Plafker, Evolution of deep structure along the Trans-Alaska Crustal Transect, Chugach Mountains and Copper River basin, southern Alaska, Journal of Geophysical Research, 1989, in press. Fuis, G. , E. L. Ambos, W. D. Mooney, and N. I. Christensen, Crustal structure of accreted terranes in the Chugach Mountains and Copper River basin, southern Alaska, from seismic-refraction results, Journal of Geophysical Research, 1989, in press.
Alaskan Geological and Geophysical Transect by Ruth A. M. Schmidt, Warren J. Nokleberg, Robert A. Page