 | | Report (issue) | | in the Wet Mountains Area, Custer and Fremont Counties, Colorado GEOLOGICAL SURVEY PROFESSIONAL PAPER...in the Wet Mountains Area, Custer and Fremont Counties, Colorado By THEODORE J. ARMBRUSTMACHER GEOLOGICAL...petrology of rocks of the McClure Mountain Complex, Gem Park Complex, and complex at Democrat Creek and associated...in the Wet Mountains area, Custer and Fremont Counties, Colorado. (Geological Survey Professional Paper...16:1269 1. Alkalic igneous rocks. 2. Petrology Colorado Wet Mountains. I. Title. II. Series. QE462.A4A76 |  | | Report (volume) | | Mafic-Ultramafic Layered Intrusion at Iron Mountain Fremont County Colorado GEOLOGICAL SURVEY BULLETIN 1251-A... Mafic-Ultramafic Layered Intrusion at Iron Mountain Fremont County Colorado By DANIEL R. SHAWE and RAYMOND L...funnel-shaped intrusive complex associated with younger alkalic rocks of the McClure Mountain Complex UNITED STATES...mafic-ultramafic layered intrusion at Iron Mountain, Fremont County, Colo____- ________ In pocket 1. Geologic...the McClure Mountain Complex showing location and geologic setting of the mafic-ultramafic complex at |  | | Report (issue) | | Carbonatites of the Gem Park Complex, Custer and Fremont Counties, Colorado GEOLOGICAL SURVEY PROFESSIONAL...CARBONATITES OF THE GEM PARK COMPLEX, CUSTER AND FREMONT COUNTIES, COLORADO S a n g re d a C r i s... GEM MOUNTAIN Sawatch Range ark -Cbtrfplex ving pyroxenite and gabbro of the Gem Park Complex. -«...Carbonatites of the Gem Park Complex, Custer and Fremont Counties, Colorado By RAYMOND L. PARKER and WILLIAM...GEOLOGICAL SURVEY PROFESSIONAL PAPER 649 The Gem Park Complex its geology and mineralogy, and its niobium distribution |  | | Journal (article/letter/editorial) | | 14627, USA z Branch of Isotope Geology, U.S. GeologicalSurvey, MS 963, Denver, Colorado 80225, USA Abstract...carbonatites selected for this study are from McClure Mountain, Colorado, and from Magnet Cove, Arkansas. They...alkalic syenitic igneous complexes. The McClure Mountain complex has been dated at 520 m. Y. old by K -...r methods (Olson et al. 1977). The Magnet Cove complex is found to be 95 m. y. old by the K - A r method...Murthy (1977b) showed that the hydrous mineral kaersutite, which is often associated with mantle-derived |  | Szopa, Krzysztof, Skreczko, Sylwia, Chew, David, Krzykawski, Tomasz, Szymczyk, Artur (2019) Multi-Tool (LA-ICPMS, EMPA and XRD) Investigation on Heavy Minerals from Selected Holocene Peat-Bog Deposits from the Upper Vistula River Valley, Poland. Minerals, 10 (1) 9 doi:10.3390/min10010009 | Journal (article/letter/editorial) | | apatite, monazite, chromite, ilmenite, chlorite, iron oxides, rutile and siderite. This mineral suite...in the Upper Vistula River Valley [17] (Pszczyna County, Poland). The studied area belongs to the Fore-Carpathian...microscope (Thermo Fisher Scientific, MA, using USA; 15 kV and 1 FET nA) equipped an EDS (EDAX) detector...Faculty of 15 Earth Poland). Scientific, Waltham, MA, USA; kVSciences and 1 (Sosnowiec, nA) equipped with an...apatite reference material in this study. McClure Mountain apatite from syenite (the rock from which |  | | Book | | Lengai natrocarbonatite volcano and the Ilimaussaq complex, but comparative studies on alkaline rocks have...other hand many occurrences are so extensive and complex that the descriptions will only be adequate to...2·1 Cariboo-Bell 22 Horsefly Creek 23 Takomkane Mountain area 2 4 B l u e River area 25 Verity 26 Rayfield...29 Perry R i ver 30 Mount Copeland 31 Trident Mountain 32 K i n basket Lake 33 Mount Laussedat 34 Mount...64 65 66 67 68 69 70 71 72 73 74 75 76 Kruger Mountain Rossland dyke Crowsnest volca nics Sweet G rass |  | | Book (edition) | | Carbonatites are now the major sources of RE elements (Mountain Pass, California) and of Nb (Oka, Quebec and Araxa...detailed geological survey of the Alné Island complex and announced his results in a series of papers...most of the field work on the Iron Hill complex of Gunnison County, Colorado, in 1912-1913. Although his...never accepted the idea of an igneous origin for the Iron Hill carbonatite. In 1924 Bowen, who had visited...fairly pure calcite (Garson and Smith, 1958). The complex was first studied by F. Dixey, and it was he who |  | | Report (issue) | | metamorphosed hydrothermal system at Pine Canyon. Piute County, Utah. U.S.A. [abs.]: Mineralogical Society (London)...mineralogy of the Cerrillos copper deposit, Santa Fe County, New Mexico: New Mexico Geological Society Guidebook...1988. Ag-Au-Te mineralization in the Ratagain complex, northwest Scotland: Transactions Institution of...a satellite intrusion of the Palabora igneous complex, South Africa: Economic Geology, v. 81, p. 143-155...for the tectonic development of the southeastern Colorado Plateau boundary: Journal of Geophysical Research |  | | Report (issue) | | listed on pages A263-A268. Numerous Federal, State, county, and municipal agencies and other organizations..._-_ Louisiana. ___--__--__-----------------Rocky Mountain region. ____-_______-------Montana __ __________________________...Southern Rocky Mountains and plains___________ Colorado..._ _______________________________ New Mexic...Mexico______________________________ Colorado Plateau _______________________________ Colorado.. _________________________________...77 77 78 78 79 80 81 81 81 83 84 84 Continued Colorado Plateau Continued Utah_-__ _____________-_ Ariz |  | | Report (issue) | | 1966 1967 1968 1969 1970 Numerous Federal, State, county, and local agencies and other organizations and...•.•. Copper and molybdenum ......•...•.•.•.•••.. Iron •..•....••..•.•.....••.•....•........ Platinum •...studies •.•••••••..••.••.••••• Precambrian rocks in Colorado .•.••.•••.••••..• SanJuan Mountains, Colo. • •••••••...Rocky Mountain region .•.•••••••••.•.••.•••.•.• Arizona .•••.••••••.••.•.•.•.•..••••.•...• Colorado ••••••••••...Investigations-Continued Page Water resources-Continued Rocky Mountain region-Continued Texas ...................... |  | Humbert, Fabien, Agangi, Andrea, Massuyeau, Malcolm, Elburg, Marlina A., Belyanin, George, Smith, Albertus J.B., Iaccheri, Linda M., Coetzee, Louis L., Wabo, Hervé (2020) Rifting of the Kaapvaal Craton during the early Paleoproterozoic: Evidence from magmatism in the western Transvaal subbasin (South Africa) Precambrian Research, 342. 105687 doi:10.1016/j.precamres.2020.105687 | Journal (article/letter/editorial) | | transition. About 150 million years later, the Bushveld Complex possibly exploited the same rifting structures...provided pathways for the magmas of the Bushveld Complex and its satellites intrusions, which erased most...Formation there, e.g., the ~2.055 Ga Bushveld 11 Complex-related intrusions (e.g., Barnes et al., 2010;...standard used for the J value calculation was the McClure Mountain 13 amphibole (523.00 ± 1.00Ma) (Schoene...the Rustenburg Layered Suite from the Bushveld Complex in its trace element characteristics (Fig. 8d) |  | | Report (volume) | | George G. The Metaline district, Pend Oreille County, Washington, [Chap.] 6 in Lead-zinc deposits in...fill of Red Light Bolson, southeastern Hudspeth County, Texas, in Geology of the southern Quitman Mountains...terraces along Maple River in northeastern Clinton County, Michigan, U.S.A. (their morphologic, genetic and...northwest quarter of Lemoine Township, AbitibiEast County [also French edition]: Quebec Dept. Nat. Resources...Iraq and of Antigo silt loam catena in 'Menominee County, Wisconsin [ abs.]: Dissert. Abs. Internat., Sec |  | | Book | | long (Marty, 2004 ). AFRICA widely in Litchfield County, where good crystals were taken from quartz veins...region (Brunet, I 977b ). NEW YORK Amity, Orange County. At many isolated collected sites between the towns...CANADA BRITISH COLUMBIA Ice River complex. The Ice River complex is an intrusive body of alkaline igneous...Litchfield County. Ilmenite masses and crystals from somewhere near Washington, Litchfield County, were described...Lake Road occurrence, Faraday Township, Hastings County. In fall 1994, Dan and Shelley Lambert extracted |  | | Report (issue) | | HELD AUGUST 20-25, 1978 IN SNOWMASS-AT-ASPEN, COLORADO UNITED STATES OF AMERICA 291075 PREFACE The...International Conference in Snowmass-at-Aspen, Colorado, U.S.A., are Carnegie Institution of Washington...zircons and monazites from a mafic to ultramafic complex and its country rocks (Sauviat-Sur-Vige, French...intrusions and inclusions of the Ascutney Mountain complex, Vermont, by K. A. Foland and R. P. Lesser...geochronology of Precambrian rocks of the Ovruch buried mountain range, northwest Ukraine, by Igor M. Gorokhov |  | | Report (issue) | | ------Arkansas -------------------------------Colorado -----------------------------~--Kansas ·-----...al cooperators _------------------------State, county, and local cooperators -----------Other cooperators...sample and jts leachate, Pando area, Eagle County, Colorado -----------------------------------------...of oceanic lithosphere (Great Basin and Rocky Mountain deposits of the general Laramide type). Chemical...spee>trographic analysis show that a large area low in iron coincides with the southeast-trending contact between |  | | Report (issue) | | Alaska--4230 University Dr., Rm. 101 • LAKEWOOD, Colorado-Federal Center, Bldg. 810 • MENLO PARK, California-Bldg...Paris, France, August 26-31, 1974 Snowmass, Colorado, USA, August 20-25, 1978 Nikko, Japan, June 27-July...and Electric Company Western Mining Corporation (USA) VMI, Inc. iv ICOG-8 Organizing Committee Gamiss...PROVENANCES OF HOLOCENE SAND DUNES, NORTHEASTERN COLORADO AND THE NEBRASKA SAND HILLS ALEINIKOFF John N...Survey, Box 25046, DFC, MS 963, Denver, CO, 80225, USA P. Agrinier, M. Javoy (Lab. G&>chimie Isotopes Stables |  | | Book | | Emplaced in the Upper Jurassic Qorveh Granitoid Complex (Majidaba and Kangareh), Kurdistan Province, Iran”)...Emplaced in the Upper Jurassic Qorveh Granitoid Complex (Majidabad and Kangareh), Kurdistan Province, Iran...deformed, late Archean Blake River Group megacaldera complex of North America with an original diameter of 80–90...prominent 932–929 Ma (Schärer et al. 1996) Rogaland complex. More recently, precise U-Pb dating has confirmed...dykes (Hellström et al. 2004) and the Rogaland complex (Schärer et al. 1996) are in black lettering the |
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