The Trans-Alaska Crustal Transect (TACT) program, a multidisciplinary investigation of the continental crust and its evolution along the Trans-Alaska pipeline corridor, was started by the USGS during 1984. Preliminary results of geologic, geophysical, and wide-angle reflection/refraction data obtained across the Chugach terrane (CGT) and the composite Wrangellia/Peninsular terrane (WRT/PET) suggest the following: (a) The CGT is composed of accretionary sequences that include, from south to north, Late Cretaceous schistose flysch, uppermost Jurassic to Early Cretaceous sheared melange, and Early(?) Jurassic blueschist/greenschist. (b) The CGT accretionary sequences have local broad, low-amplitude magnetic or gravity anomalies, (c) Seismic data show that the...
1984 Results of Trans-Alaska Crustal Transect in Chugach Mountains and Copper River Basin, Alaska
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W. J. Nokleberg, E.L. Ambos, G.S. Fuis, W.D. Mooney, R.A. Page, George Plafker, D.L. Campbell; 1984 Results of Trans-Alaska Crustal Transect in Chugach Mountains and Copper River Basin, Alaska. AAPG Bulletin 1985;; 69 (4): 673. doi: https://doi.org/10.1306/AD4626F5-16F7-11D7-8645000102C1865D
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