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Abstract
3-4 Reynolds, S. J., Keith, S. B., and Coney, P. J., 1980, Stacked overthrusts of Precambrian crystalline basement and inverted Paleozoic sections emplaced over Mesozoic strata, west-central Arizona, in Jenney, J. P., and Stone, C., editors, Studies in western Arizona: Arizona Geological Society Digest, v. 12, p. 45-50.
Abstract
3-4 Reynolds, S. J., Keith, S. B., and Coney, P. J., 1980, Stacked overthrusts of Precambrian crystalline basement and inverted Paleozoic sections emplaced over Mesozoic strata, west-central Arizona, in Jenney, J. P., and Stone, C., editors, Studies in western Arizona: Arizona Geological Society Digest, v. 12, p. 45-50.
ABS
Geologic mapping in the western Harquahala Mountains and Little Harquahala Mountains of west-central Arizona has documented an extensive sequence of subhorizontal thrust sheets. The thrust sheets contain Precambrian crystalline basement and locally inverted Paleozoic strata and have been emplaced over Mesozoic rocks. Structural relationships suggest that large southeast-vergent folds in the Paleozoic rocks have been discordantly severed by a later episode of thrusting that is interpreted to have northerly or north-northeast transport. Preliminary geochronologic data indicate that the thrusts are Late Cretaceous or early Tertiary and represent a crucial link in a belt of crystalline (basement-involved) thrusts that extends from the Papago country of southern Arizona into southeastern California.
Key words
Arizona. basement. Basin and Range Province. displacements. faults. Mesozoic. North America. overthrust faults. Precambrian. structural geology. United States. west-central Arizona.
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Abstract
3-4 Reynolds, S. J., Keith, S. B., and Coney, P. J., 1980, Stacked overthrusts of Precambrian crystalline basement and inverted Paleozoic sections emplaced over Mesozoic strata, west-central Arizona, in Jenney, J. P., and Stone, C., editors, Studies in western Arizona: Arizona Geological Society Digest, v. 12, p. 45-50.
ABS
Geologic mapping in the western Harquahala Mountains and Little Harquahala Mountains of west-central Arizona has documented an extensive sequence of subhorizontal thrust sheets. The thrust sheets contain Precambrian crystalline basement and locally inverted Paleozoic strata and have been emplaced over Mesozoic rocks. Structural relationships suggest that large southeast-vergent folds in the Paleozoic rocks have been discordantly severed by a later episode of thrusting that is interpreted to have northerly or north-northeast transport. Preliminary geochronologic data indicate that the thrusts are Late Cretaceous or early Tertiary and represent a crucial link in a belt of crystalline (basement-involved) thrusts that extends from the Papago country of southern Arizona into southeastern California.
Key words
Arizona. basement. Basin and Range Province. displacements. faults. Mesozoic. North America. overthrust faults. Precambrian. structural geology. United States. west-central Arizona.
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