Protolith Relations of the Gravina Belt and Yukon-Tanana Terrane in Central Southeastern Alaska

Metamorphic rocks west of the Coast Mountains batholith in central southeastern Alaska are divided into the Gravina belt, Taku terrane, and newly defined Ruth assemblage. The Ruth assemblage comprises metapelite, quartzose metaclastic strata, quartzite, marble, felsic metatuff, mafic metavolcanic ro...

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Bibliographic Details
Published in:	The Journal of geology Vol. 100; no. 1; pp. 107 - 123
Main Authors:	McClelland, William C., Gehrels, George E., Samson, Scott D., Patchett, P. Jonathan
Format:	Journal Article
Language:	English
Published:	Chicago University of Chicago Press 01-01-1992 University of Chicago, acting through its Press
Subjects:	580000 - Geosciences ACTINIDE ISOTOPES AGE ESTIMATION ALASKA Batholiths CARBONIFEROUS PERIOD CHEMISTRY CORRELATIONS CRETACEOUS PERIOD DEVELOPED COUNTRIES DEVONIAN PERIOD GEOCHEMISTRY GEOLOGIC AGES GEOLOGIC FORMATIONS Geology GEOSCIENCES IGNEOUS ROCKS ISOTOPE DATING ISOTOPES JURASSIC PERIOD LEAD ISOTOPES MESOZOIC ERA METAMORPHIC ROCKS MINERALS NORTH AMERICA PALEOZOIC ERA PETROGENESIS Protoliths Quartz Quartzite ROCKS SILICATE MINERALS Stone Tectonics URANIUM ISOTOPES USA VOLCANIC REGIONS VOLCANIC ROCKS ZIRCON Alaska
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