 | | Report (volume) | | in the Western Part of the Morrison Quadrangle Jefferson County, Colorado GEOLOGICAL SURVEY BULLETIN...in the Western Part of the Morrison Quadrangle Jefferson County, Colorado By D. J. GABLE CONTRIBUTIONS...rocks along the mountain front due west of Denver, Colorado UNITED STATES GOVERNMENT PRINTING OFFICE, WASHINGTON... Geologic map of the Precambrian rocks in the Morrison quadrangle_______-______-_-_--_----_____-_____...pocket 1. Index map showing location of Morrison quadrangle.__. E3 2. Triangular diagram showing composition |  | | Report (volume) | | Region of High-Grade Metamorphism, Front Range, Colorado 8y DOLORES J. GABLE and VERTIE C. SMITH GEOLOGICAL...region of high-grade metamorphism, Front Range, Colorado. (Geological Survey Bulletin 1392) Bibliography:...part of the Front Range, Boulder, Gilpin, and Jefferson Counties, Colo _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _...hornblende- bearing rocks, central Front Range, Colorado _ _ _ _ _ _ _ _ _ 8 3. Modes of hornblende-bearing...REGION OF HIGH-GRADE METAMORPHISM, FRONT RANGE, COLORADO By DOLORES J. GABLE and VERTIE C. SMITH ABSTRACT |  | | Report (issue) | | Geologic Map of the Dillon Quadrangle, Summit and Grand Counties, Colorado By Kari S. Kellogg1 Open-File... Geologic Map of the Dillon Quadrangle, Summit and Grand Counties, Colorado By Karl S. Kellogg This database...prior to completion of Dillon Dam, just south of quadrangle boundary, in 1962. Three terrace levels mapped...north of Straight Creek, and in triangle-shaped area along west boundary of map. Not studied in detail...exposed at several localities in south part of quadrangle. Genesis uncertain; may be older landslide deposit |  | | Report (issue) | | Peninsula, Mich. 10. Porphyry molybdenum ore, Colorado 11. Zinc ore, Edwards, N.Y. 12. Manganese nodules...Precambrian Sillimanite-Quartz Gneiss and Related Rocks, East-Central Front Range, Colorado By SHERMAN...and geochemical study of rutile-bearing rocks in Colorado and a description of their occurrence elsewhere...precambrian sillimanite-quartz gneiss and related rocks, east-central Front Range, Colorado. Includes bibliographies...Yuma County, Arizona. . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15 Santa Cruz County, Arizona |  | | Report (issue) | | METAMORPHIC ROCKS OF THE CENTRAL FRONT RANGE. COLORADO By Dolores J. Gable ' Edited bv William. D............................................ 11 Sillimanite-Free Biotite Gneiss ................................................................... 13 Sillimanite-biotite gneiss.................................................................. 13 Garnet-sillimanite-biotite gneiss.............................................................. 14 Cordierite-sillimanite-biotite gneiss ............................. |  | | Report (volume) | | of the Eldorado Springs Quadrangle Boulder and Jefferson , Counties, Colorado C_-J / By JOHN D. WELLS...Ralston Creek Formation.. __________________________ Morrison Formation____________________________ ____ Dakota...PLATE 1. Geologic map of the Eldorado Springs quadrangle..___.__In pocket FIGURE 1. Index map showing...showing location of the Eldorado Springs quadrangle. _ D3 2. Triangular diagrams showing mineralogical composition...OF THE ELDORADO SPRINGS QUADRANGLE BOULDER AND JEFFERSON COUNTIES, COLORADO By JOHN D. WELLS ABSTRACT |  | | Report (issue) | | r~~~J Geology of the Golden Quadrangle, Colorado GEOLOGICAL SURVEY PROFESSIONAL ~i''(': u (,, PAPER...THE GOLDEN QUADRANGLE, COLORADO FRONTISPIECE.-Physiographic setting of the Golden quadrangle as viewed...and south edges of the quadrangle. Geology of the Golden Quadrangle, Colorado By RICHARD VAN HORN GEOLOGICAL...PAPER 872 Geology of part of the Denver urban area, Colorado, with emphasis on deposits of Pleistocene age...Horn, Richard, 1920Geology of the Golden quadrangle, Colorado. (Geological Survey Professional Paper 872) |  | Collins, Donley S., Cobban, Robert R., Foord, Eugene E., Murphy, Jack A. (1989) Bibliography for update and revision of U.S.G.S. Bulletin 1114, Minerals of Colorado -- a 100 year record, by Edwin B. Eckel, Part A - Paper copy --Bibliography data file disks. Open-File Report Vol. 1989 (89-206) US Geological Survey doi:10.3133/ofr89206a | Report (issue) | | Survey Denver, Colorado Department of Geology, Denver Museum of Natural History Denver, Colorado NOTE FOR...revision of U.S.G.S. Bulletin 1114, Minerals of Colorado A 100 year record, by Edwin B. Eckel By Donley...Prepared in cooperation with Friends of Mineralogy - Colorado Chaptar, and the Denver Museum of Natural History...references dealing with the mineralogy of the state of Colorado. It is part of a more than 10 year effort to update...and revise U.S.G.S. Bulletin 1114, Minerals of Colorado: A 100 year record, by Edwin B. Eckel (1961). |  | | Report (issue) | | Basement in Colorado GEOLOGIC A I, Rock Units of the Precambrian Basement in Colorado By OGDEN TWETO...TWETO GEOLOGY OF THE PRECAMBRIAN BASEMENT IN COLORADO U.S. GEOLOGICAL SURVEY PROFESSIONAL PAPER 1321-A...igneous rocks in outcrop and the buried basement in Colorado UNITED STATES GOVERNMENT PRINTING OFFICE...1912-1983 Rock units of the Precambrian basement in Colorado. (Geological Survey Professional Paper ; 1321-A)...Geology, Stratigraphic Pre-Cambrian. 2. Geology Colorado. QE653.T9 1986 551.7'1'09788 I. Title. For sale |  | | Report (issue) | | INVESTIGATIONS RELATING TO EARTHQUAKES IN THE DENVER AREA, COLORADO by J. H. Hea~ and others U. S. Geological...investigations relating to earthquakes in the Denver areA, Colorndo Introduction By J, II, ile aly and others...Commerce City (Derby) ;1rea, just north of Denver, Colorado, started in the Spring of 1962. The earthquakes...of Hines, Regis College, and the University of Colorado, has undertaken a series of studies of the distribution...scientists of the U. s. Geological Survey and the Colorado School of Mines, The report is in five parts. |  | | Report (issue) | | selectively eroded away. Gneiss terranes such as the sillimanite "plateau" of New Hampshire may form beneath...in the overlying volcanic rocks through a broad area (Ruppel, 1963, p. 37). Contacts between variant...suggested by tion of the southern part of the Colorado Plateaus the geometry along the north margin of...then filled by the magma which and Upper Jurassic Morrison Formation of the Coloformed the quartz monzonite...contact of the batholith. taceous shales of the Colorado Plateaus and Great A crust of volcanic rocks perhaps |  | | Report (issue) | | geological quadrangle maps (scale 1:62,500) that cover more than half of the the parks area. Therefore...assessment of the regional geology of the parks area, as a resource for planning further geologic research...and Kern Peak (Moore and Sisson, 1985). A 12th quadrangle, Olancha, (duBray and Moore, 1985) is available...field investigations. The Patterson Mountain quadrangle includes older geologic mapping by Krauskopf...and others, 1983). Geology of the Tehipite Dome quadrangle was first outlined by Krauskopf (1953), and more |  | | Report (issue) | | body of several hundred square miles in outcrop area. The Pat Keyes pluton, in contrast to the other...composite Sierra Nevada batholith. Indeed ah1 the area shown on the index map (pi. 1) is part of the batholith...extends some distance east of the range and covers the area shown on plate 1. It is not restricted to the Sierra...pluton, that crops out along the northern part of the area (pi. 1) will not be described here. It was described...descriptions have already been published for part of this area. The short paper on the correlation of the Santa |  | | Journal (article/letter/editorial) | | r „ , . ,„ ^ ^ , > Geological Survey, Denver, Colorado 8022S Nature of the Boulder Batholith of Montana...dipping granitic sheets just to the west of the area of Figure 2 (Smedes, 1967). H2a00' B a t * from...x shows location of figure 6. Relief in pictured area is 4 5 0 n . Units and contacts labeled from very...topographic behavior in various places within the area shown in Figure 3. The contact is broadly parallel...Mountains Volcanics in the southeastern corner of the area of Figure 3 is the granodiorite of Wilson Park (R |  | | Journal (article/letter/editorial) | | and its irregular habit. This type of Mnz from the area in south-central Maine must be detrital because...andalusite + potassium feldspar (And-Kfs), and sillimanite (Sil). TABLE 1. Selected common trace minerals...metamorphism, the ages of Mnz from the And and sillimanite (Sil) zones of contact aureoles test the prediction...aureoles (the Onawa aureole, Maine, and the Mt. Morrison pendant, California) measured Mnz ages from And-...radiometric dates Location Onawa aureole, Maine Mt. Morrison pendant, California Buchan terrain, south-central |  | | Report (volume) | | January 1, 1961, and December 31, 1967. The geographic area covered includes the United States, its possessions...by the United States. This is the same geographic area covered in the literature review for the Keroher...74, Ph miles east of Dutchtown, Cape Girardeau County, Mo. Type section cut by northtrending fault with...Centerville till; underlies Richmond till. Type area: Wildman Farm section, which is a composite of three...stream in NEIA sec. 33, T. 16 N., R. 14 E, Wayne County. Named after village of Abington, about 3 miles |  | | Report (issue) | | Rocks Northeast of Steamboat Springs, Park Range, Colorado GEOLOGICAL SURVEY PROFESSIONAL PAPER 1041...Rocks Northeast of Steamboat Springs, Park Range, Colorado By GEORGE L. SNYDER with a section on GEOGHRONOLOGY...previously unstudied area of Colorado and comparison with related rocks elsewhere in Colorado and Wyoming UNITED...rocks northeast of Steamboat Springs, Park Range, Colorado. (Geological Survey Professional Paper 1041) Bibliography:...Docs, no.: I 19.16:1041 1. Intrusions (Geology) Colorado Steamboat Springs region. 2. Geology, Stratigraphic |  | | Report (volume) | | Geology of the Mount Pinchot Quadrangle Southern Sierra Nevada California By JAMES G. MOORE GEOLOGICAL...James Gregory, 1930Geology of the Mount Pinchot quadrangle, southern Sierra Nevada, California. Washington...James Gregory, 1930Geology of the Mount Pinchot quadrangle, southern Sierra Nevada, California. 1962. (Card...(Card 2) 1. Geology-California-Mount Pinchot quadrangle. 2. Geology-California-Sierra Nevada Mountains... Division of Mines. II. Title: Mount Pinchot quadrangle, southern Sierra Nevada, California. (Series) |  | | Report (issue) | | Philipsburg, Montana.______________________ Studies in Colorado. ____________________ East Tintic silver-lead...Wheeler area, White Pine County, Nevada-__________ Beryllium in the Lake George district, Colorado-.-. _...CarolinaFluorspar in the Browns Canyon district, Salida, Colorado._____________________ Phosphate deposits in the...District and regional studies.-______________ Colorado Plateau.______________________ Shirley basin,...plain, Texas. ___________________ Front Range, Colorado,__-_-----____---_ Powderhorn district, Colorado____---_-___ |  | | Report (issue) | | listed on pages A259-A264. Numerous Federal, State, county, and municipal agencies listed on pages A211-A215...resources. ______________________________ Atlantic coast area.. _ _______________________ Interstate studies....Continued Water resources Continued Midcontinent area Continued Ohio-_____________________________ Indiana...____________--------_---_--_Utah......--_---------------.--------Colorado.. ------------------------Kansas.______--_---...as.---______-____-___--__-_-_-_-. Pacific coast area._________-_.-_-__. Interstate studies._____---_-_ |  | | Report (issue) | | Professional Paper 525. Numerous Federal, State, county, and municipal agencies listed on pages A221-A225...________________________________ _ Atlantic coast area _________________________ _ New England _________________________...Islands _________________________ _ Midcontinent area _________________________ _ Minnesota ____________________________...resources-Continued Water resources-Continued Page Midcontinent area-Continued Wisconsin _____________________________...investigations ________________ _ 34 Rocky Mountain area ______________________ _ 35 Montana _____________________________ |  | | Report (issue) | | 1965. 1966. 1967. 1968. Numerous Federal, State, county, and local agencies and other organizations and...-___ California. _ __________________________ Colorado ______________________________ Montana. _____...Mountains_--_-------------- A41 Precambrian rocks of Colorado.__________ 41 41 Mesozoic stratigraphy.__________________...Dakota___________--------------75 Utah-..-.__-. -77 Colorado-____ ___________-.----77 Kansas.--.__.______-_-_...cooperators________-____________________ State, county, and local cooperators_____________ Other cooperators |  | | Report (volume) | | Martha S. Toulmin, and Druid Wilson. The geographic area covered includes the United States, its possessions...administered by the United States. This geographic area is much smaller than that for the Wiln1arth Lexicon...3 and Central America. This smaller ge_ographic area was selected primarily because the International...Genevieve Limestone in Blue River Group" in another area. Finally, the name in boldface indicates that the...Bull. 1060-D, p. 193, 252-253, pl. 7. In Nemaha County, Kans., member is basal unit of Howard limestone |  | | Report (issue) | | Schwartzwalder uranium deposit, Front Range, Colorado by W* Alan R., Wallace 1 U.S. Geological Survey...uranium deposit, in the Front Range west of Denver, Colorado, is the largest vein-type uranium deposit in the...flow related to igneous activity in the nearby Colorado mineral belt. Temperatures decreased from 225°C...of the Schwarzwalder mine in the Front Range, Colorado. 2 2. Cross-section of the Schwartzwalder mine...Range. 10 4. Generalized geologic map of the area surrounding the Schwartzwalder mine. 13 5. Schematic |  | | Report (volume) | | Notes. Colorado School Mines Mineral Industries Bull. Industries Bulletin. Golden, Colo. Colorado School...University. Colorado School of Mines Mineral Professional Contributions of the Colorado Colorado School...Mines Quart.- Quarterly of the Colorado School of Mines. Golden, Colo. Colorado Univ. Studies Ser. Earth Sci...Sci.- University of Colorado Studies, Series in Earth Science. Boulder, Colo. Colorado Water Conserv. Board...Board Ground-Water Ser. Circ. Colorado Conservation Board, Ground-Water Series Circular. Denver, Colo |
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