WebThe age of the Birch Creek Schist in the Mount Fairplay area and the Yukon-Tanana … Webwhich have been traditionally mapped as Precambrian Birch Creek Schist. .Birch Creek Schist terrane, however, contains at least two sequences of metamorphic rocks which appear to be in thrust contact in the district. The older sequence Is exposed as a possible window in a belt that extends southwest from Cleary Creek on the north side of Pedro ...
Geolex — Fortymile publications - USGS
WebLittle Moose Creek mostly flows through Birch Creek Schist (Bundtzen, 1981). In the headwaters of Little Moose Creek, across the divide from an unnamed north fork tributary of the North Fork of Canyon Creek, a half-mile- wide band of siliceous and graphitic schist of the Keevy Peak Formation is downfaulted into the Birch Creek Schist (Hawley and … WebThe lode deposits are mainly in the Birch Creek Schist of Precambrian or early Paleozoic age and are closely associated with porphyritic granite, quartz monzonite, quartz diorite, and granodiorite of probable Mesozoic age. Semiquantitative spectrographic analyses for 30 elements and gold analyses were made on 130 samples representative of the ... shania bittner
Schists of the Central Alaska Range - USGS
WebEagle Creek soils are derived from loess and from Birch Creek schist, a weakly meta-morphosed marine sedimentary deposit. The soils have been disturbed by frost action, solifluction and mass movement. Although the site was unglaciated during the Pleistocene (Pewe, Burbank & Mayo 1967), it received considerable loess deposition from the nearby WebLimestone is highly altered, finely crystalline, schistose, and often micaceous some layers becoming more and more foliated grade into mica schist. Is about 4000 ft thick. Seems to unconformably underlie Totsen series [now known to overlie abandoned Totsen series which is same as Birch Creek schist also abandoned]. WebBirch Creek (Bourbeuse River tributary), a stream in Missouri. Birch Creek (Chouteau … shania blonde