 | | Journal (article/letter/editorial) | | REGIONAL METAMORPHISM IN THE NORTHERN FRONT RANGE, COLORADO Abstract: Rubidium-strontium dating of wholerock...A large part of the Precambrian terrane of the Colorado Front Range consists of schists and gneisses which...the oldest known rocks of the area (Fig. 1). West of Golden, Colorado, these were named the Idaho Springs...facies are recognized locally. In the Big Thompson Canyon area, the rocks show progressive metamorphism...garnet, staurolite, andalusite, sillimanite-muscovite, and sillimanite-microcline zones have been recognized |  | | Report (issue) | | Geochemistry of Shear Zones in the Big Narrows Area, northern Front Range, Colorado 3y Jeffrey T. Abbott Open-file...Geochemistry of Shear Zones in the Big Narrows Area, northern Front Range, Colorado E&r Jeffrey T. Abbott U.S...within the Big Narrows and Foudre Park quadrangles located in the northern Front Range of Colorado are Precambrian...boundary of the Log Cabin batholith lies within the area studied. A detailed chronology of polyphase deformation...a major period of plastic deformation (Fp)> sillimanite-microcline grade regional metamorphism, migmatization |  | | Report (issue) | | WATER-RELATED STUDIES, SOUTH PLATTE RIVER BASIN-COLORADO, NEBRASKA, AND WYOMING by Kevin F. Dennehy and...GEOLOGICAL SURVEY Open-File Report 93-106 Denver, Colorado 1993 I JUL t 5 1993 U.S. DEPARTMENT Of THE...Introduction Purpose and scope Description of study area Sources of related information Approach Arrangement...WATER-RELATED STUDIES, SOUTH PLATTE RIVER BASIN-COLORADO, NEBRASKA, AND WYOMING BY KEVIN F. DENNEHY AND...Description of tudv Area The South Platte River basin includes parts of th ee State 3~Colorado (79 percent) |  | | Report (volume) | | Crossroads: Lyons, P. L., 4. Gilbert H., 10. Colorado, South Silverton area: Expanding horizons: Lay, R. L.,L Geophysicist..., 11. D. J. Rocky Mtn. geosyncline in Canada: Colorado Plateau: Wengerd, Warren; P. S., 4. S. A., 6....Reading: Military Service Pub. Co. Texas, Tordilla Hill area, color: Shale nomenclature: Clark, T. H. ,6. South...Div. Mines, 1; Jenkins, O. P., Choctaw County, Highway 17 area: 3. Toulmin, L. D., Jr., 3. Minor: Wright...Indian Mtn. area: Crawford, Potash: Calif. Dept. Nat. Res. T. J., 1. Div. Mines, 33. Piedmont area: Baker |  | | Report (volume) | | AMERLCAN GEOLOGY, 1959 Heading Entries Subject, area, or individual Individual names Listed by name of...sec- Area listing of all formation tables and sections tions, tables Geologic history Area Area ; some...geoHistory logical investigations Subject or area Industrial minerals Area ; also includes articles discussing...or ores Mineral name listing Mineral descriptions Area; includes more than one mineral; not Mineral resources...correlation by spores : Kosanke, R. M. Cook Mills area, Mississippian-Pennsylvanian: Whiting, L. L. INDEXES |
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