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abundant Agiapuk andesite Anna Creek appears argillites augite augite microlites basalts bed rock belt canyon Cascade Range chloritic claim claim.—This Coast Range color cone contain copper pyrite country rock Crater Lake crest crystalline limestone crystals dacite deposits developed dikes Ear Mountain east eruption exposed extinction angles feet feldspar flow fragments geology glacial Glacier gold grains granite gravel greenstone greenstone-schist groundmass hornblende hypersthene inclosures Inlet intrusive iron pyrite Kasaan Ketchikan Kugruk River Kuzitrin Kuzitrin River laths lava limestone Llao Rock lowland magnetite mass miles mineralized zone Mount Mazama occur olivine parallel Peak Peninsula phenocrysts plagioclase plain plateau Port Clarence Port Clarence limestone portion Prince of Wales probably pumice quartz quartz veins region schist schistose seen slope southeastern Alaska southern specimens spherulites surface thickness thin section tributaries tunnel valley volcanic width writer
Seite 70 - 'bounded north by the parallel forty-three degrees four minutes north latitude, south by forty-two degrees forty-eight minutes north latitude, east by the meridian one hundred and twenty-two degrees west longitude, and west by the meridian one hundred and twenty-two degrees sixteen minutes west longitude, having an area of two hundred and forty-nine square miles.
Seite 34 - A certain proportion of the ice, however, during the maximum phase of this great glacier flowed through passes in the Coast Ranges, and uniting there with ice derived from the western slopes of these ranges, filled the great valley between Vancouver Island and the mainland, impinged upon the shores of the Queen Charlotte Islands, and still
Seite 121 - no addition; over the third write that subject under which you would place the hook in your library ] United States.
Seite 70 - a good opportunity to observe some of the most important features of this great pile of lavas. The Cascade Range in southern Oregon is a broad irregular platform, terminating rather abruptly in places,
Seite 70 - ranging from over 500 to nearly 2,000 feet in height, encircling a deep, blue sheet of placid water in which the mirrored walls vie with the
Seite 120 - DC LIBRARY CATALOGUE SLIPS. [Take this leaf out and paste the separated titles upon three of your
Seite 14 - the region under discussion and will not be further considered. The so-called Coast Range extends from near the boundary of Washington northward through British Columbia into southeastern Alaska. In British Columbia it has a width of about 100 miles, which decreases to the northward. Its peaks vary in altitude from 7,000 to 8,000 feet. Following the
Seite 20 - the same region consists essentially of quartz and orthoclase phenocrysts in a groundmass of quartz and feldspar, with muscovite, largely secondary, and a secondary growth of feldspar surrounding the larger orthoclase phenocrysts.
Seite 70 - detritus filling the valleys. Across these plains Anna Creek and Rogue River have carved deep, narrow canyons with finely sculptured walls, which the roads follow for some distance.