 | | Report (issue) | | Trupe Petrology And Tectonic Significance Of Ultramafic Rocks Near The Grandfather Mountain Window In...structurally highest thrust sheet to examine ultramafic rocks, eclogite and other high grade metamorphic...road are Chilhowee Group sandstone within the Table Rock thrust sheet. 20.8 National Park Service Linville...and Schedl et al. (1992) obtained a Rb-Sr whole-rock date of 302 Ma for mylonite from this location....Parkway National Park, and taking samples or breaking rock is prohibited except by special permit. Cross the |  | | Report (issue) | | can be associated with ultramafic rocks. Areas of exposed Precambrian ultramafic rocks are labeled with...eastern part of Beaverhead County, Montana, and the western part of Madison County, Montana. The study area...Mineral deposit types that can be associated with ultramafic and mafic rocks C Metallic minerals E 15'...7 9 1 13 10 12 B 45o 45o A 8 45' 45' Ultramafic rocks are igneous rocks that are distinctly dark...host of specialized rock types named on the basis of their mineralogy. Ultramafic rocks lack quartz and |  | | Journal (article/letter/editorial) | | 27695-8208, USA Received: December 18, 1990/Accepted: November 12, 1991 Abstract. Ultramafic-hosted deposits...restricted to veins within serpentinized ultramafic rock bodies (Pantin-Herrera 1967). The structural setting...Margarita deposits are similar to those of other ultramafic-associated magnesite deposits (Pohl 1989). Globally...to near-surface meteoric weathering of the ultramafic bodies (Pohl and Siegl 1986; Pohl 1990; Abu-Jaber...all of the magnesium-rich minerals within the ultramafic host, the source of carbon is unclear. The source |  | | Book | | COLLEGE LIBRARY QE461 .W92 Wyllie, P. J., ed. 000 Ultramafic and related ro 260101 re ee Enky oeLo pa Pero...pakseairam terete als5 ULTRAMAFIC and RELATED ROCKS ULTRAMAFIC RELATED and ROCKS Edited... focused attention on the implications of ultramafic rock studies for interpretations of upper mantle...One aim of Ultramafic and Related Rocks, is to emphasize variety: the vari- ety of rock types included...wishing to study in more detail any association of ultramafic rocks. Adoption of a multiauthor approach which |  | | Journal (article/letter/editorial) | | Metamorphic Suite of northwestern North Carolina, USA Loren A. Raymond, Arthur Merschat & R. Kelly Vance...Metamorphic Suite of northwestern North Carolina, USA, International Geology Review, 58:7, 874-912, DOI:...Metamorphic Suite of northwestern North Carolina, USA Loren A. Raymonda, Arthur Merschatb and R. Kelly...State University, Boone, NC, USA; bUS Geological Survey, Reston, VA, USA; cDepartment of Geology and Geography...Geography, Georgia Southern University, Statesboro, GA, USA ABSTRACT ARTICLE HISTORY Metaultramafic rocks |  | | Book (volume) | | Colorado; colorless scheelite (19.66 ct), Kern County, California; octagonal step cut violetish pink...Vivid blue matched benitoite gems from San Benito County, California, consisting of 52 benitoites and 75...begin from one or more diamond-bearing kimberlite bodies, most likely in Canada. Systematic large-scale...conventional open-pit methods and the enclosing rock crushed and treated to release the crystals. Red...appreciate that many diamond-bearing kimberlite bodies must exist from which these stones were derived |  | | Book | | ....243 APPENDIX II: MINERAL SPECIES LISTED BY COUNTY ...............................248 ABOUT THE AUTHORS...and their metamorphic equivalents. Frequently, the rock record is incomplete and, within many areas, only...dichotomy in their distribution parallels that of the rock distribution. Occurrences of groups 1 and 3 are...are largely restricted to the Precambrian rock terrains of the western Northern Peninsula, whereas sedimentary...pyrite. SERPENTINITE A widely distributed type of rock is serpentinite, which represents hydrothermally |  | | Journal (article/letter/editorial) | | Schwaz (Tyrol, Austria) fine-grained metarodingite bodies are tectonically embedded within quartzphyllites...remnants of the protolith, a pre-Alpine magmatic, ultramafic assemblage. Although garnet grew continuously...described rodingite as a coarse grained gabbro-like rock associated with dunite. Usually rodingites are Ca-enriched...formed during metasomatic overprint of mafic and ultramafic rocks during serpentinization. Because rodingites...rodingites represent chemically-transformed ultramafic rocks, their occurrence bears some significance on |  | | Book (edition) | | Cale-Alkaline Volcanic Rock Bodies 62 Chapter 4 Cale-Alkaline Plutonic Rock Bodies /08 Chapter 5 Subalkaline...Subalkaline Basaltic and G'ftranuific Rock Bodies l4f> Chapter 6 All..aline Rock BodieJ /9/j Chapter 8 Crystal-Liquid-...DiPersification, and Ascent 299 Part III Metc11norphic Bodies c111d S1 ste111s 341 1 Chapter 10 1Vature of A1etc1111orphisn1...Petrography and Co,npo~ition qf .\lletc1111orphic Bodies 38! 1ยท111 Contents in Brief C hapter 16 Chapter...Chapter 12 Field Relations <~f ,\1etl1111orphic Bodies 409 Chapter 13 Origin |  | | Book | | used to describe various kinds of serpentinized ultramafic rocks. Serpentinization being a process that...doing so, he. elevated ophiolite from a rock term to a rock association term. Steinmann (1906, 1927)...The name ophiolite is not permissible for those rock groups that consist only of diabase-like rocks of...ophiolite and so ophiolite was to grow into a genetic rock assemblage. This led to the general concept that...adequately explain the association of mafic and ultramafic rocks within alpine orogenic zones. During this |  | Shagam, R., Hargraves, R. B., Morgan, W. J., Houten, F. B. Van, Burk, C. A., Holland, H. D., Hollister, L. C. - Eds. (1972) Studies in Earth and Space Sciences. GSA Memoir 132. Geological Society of America doi:10.1130/mem132 | Report (issue) | | Moores 195 Ultrabasic Rocks Types of Alpine Ultramafic Rocks and Their Implications for Fossil Plate...Tectonic Implications .Gabriel Dengo 303 Zoned Ultramafic Complexes of the Alaskan Type: Feeder Pipes of...Buddington Petrology of Dikes Emplaced in the Ultramafic Rocks of Southeastern Quebec and Origin of the...of the stratigraphic relations between two major rock groups, one meta-sedimentary, the other metavolcanic...the unstated but implied limitยฌ ing case that both rock groups were autochthonous. The dynamic solutions |  | | Report (issue) | | (CaBSiO4OH) vesicle filling from a basaltic Houghton County lava flow. Small specks of native copper occur.... ... .. ... ..... ........ .... .. SEDIMENTARY ROCK AND NIINERAL DEPOSITS ........................ Sedimentary...exceptionally fine, twinned analcite crystals from Houghton County ยทยทยทยทยทยทยทยทยทยทยทยทยทยทยทยทยทยทยทยทยทยทยทยท-ยทยท-ยทยทยทยทยทยท-ยทยท-ยทยทยทยทยทยทยทยท...ยทยทยทยทยท 41 2. Ankerite on siderite from Alpena County ยทยทยท-ยทยทยทยทยทยทยทยทยทยทยทยทยทยท-ยทยทยทยทยทยทยทยทยทยทยทยทยทยทยทยทยทยทยท 46 3....stalactitic limonite from Negaunee in Marquette County .............................................. |  | | Report (issue) | | paper gives some new data obtained for the same rock units by using the isotope dilution technique for...determined from uranium and thorium from the same rock can be expressed in th~ followinJZ way: T(Pb207...results of potassium analysis of 12 different silicate rock and mineral samples are reported. The analysis was...10-85 percent lower than the mica age for the same rock. The argon age of sedimentary glauconite is in good...age data on muscovite and biotite from the same rock are compiled and evaluated. Of the 11 samples involved |  | | Report (issue) | | Thermometry. Geologic Some Aspects of the Role of Water in Rock Melts. By George C. Kennedy.............. sees Role...respectively. The velocities for the underlying mantle rock are 8.15 and 4.7 km/sec respectively. The variations...km beneath the sea surface and is underlain by ultramafic rocks with compressional wave velocity of about...certainly small. The oceanic crust is a layer of mafic rock somewhat less than 5 km in thickness, with a compressional...layers with velocities 5.5-6 km/sec underlain by rock with the surprisingly high velocity of 7.0-7.2 km/sec |  | | Report (issue) | | ----_---Paleozoic diorite and gabbro ____ --------Ultramafic rocks ___________ ---_--------Triassic dikes...Appalachia_ __ __ ________ __ Rock salt of Silurian age_____________ Rock salt of Mississippian age________...soapstone____ Deposits associated with mafic and ultramafic rocks ________ .__________ Deposits associated...pinnacles beneath soil cover, Bluegrass, Highland County, Va_ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _...transverse joints cutting shale at Poverty, Highland County, V a_ _ _ __ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ |  | | Book | | Sciences Saint Louis University St. Louis, MO 63103, USA 2004 Amsterdam - Boston - Heidelberg - London -...525 B Street Suite 1900 San Diego CA 92101-4495 USA ELSEVIER Ltd The Boulevard Langford Lane Kidlington...(http://www.elsevier.com/locate/permissions). In the USA, users may clear permissions and make payments through...Center, Inc., 222 Rosewood Drive, Danvers, MA 01923, USA; phone: (+1) (978) 7508400, fax: (+1) (978) 7504744...Carnegie Institute of Washington, Washington, DC, USA P.L. CORCORAN Department of Geology, University of |  | | Book | | recognition of the, sometimes subtle, differences between rock units formed by the different Alpine overprints...accompanied by a multitude of deformations causes most rock units to appear simply to be greenschists! In addition...geochronological data, comparative studies of ultramafic rocks and are deposits, and the Late Variscan...units (e. g. the preVariscan granites; metabasic rock series of very different ages). New geochemical...(Amherst, Massachusetts), I. Rodgers (New Haven, Connecticut), W. Schubert (Wurzburg), I. Schumacher (Kiel) |  | | Book (edition) | | impact crater. A lightning strike may heat soil or rock sufficiently to melt some of it and produce a fulgurite...may generate enough heat to fuse the surrounding rock, forming scoriaceous or slaglike glasses referred...the series of volumes by Deer and others titled Rock-Forming Minerals, which provides extensive information...paint, gasoline, and solder is a good example. Our bodies are generally well equipped to deal with the routine...a streak plate is not available, a knife blade, rock hammer, or other similar implement can be used to |  | | Book | | Clearance Center, 222 Rosewood Drive, Danvers, MA 01923 USA. The fee code for users of the Transactional Reporting...rocks. FeCr2O4 occurs exclusively in mafic and ultramafic rocks as a crystal accumulated in the early stages....................46 2.2.3.1 Stratiform MaficโUltramafic Chromite Deposits.........64 2.2.3.2 Podiform-...Asphalts, and Coal ..........................65 2.2.5 Rock ..................................................diffusion, (6) temperature, (7) ultrafiltration in water-rock reactions, and (8) the preference for some biological |  | | Report (issue) | | mine Witless Bay shoreline occurrences Midnight Rock Wabana mine Foxtrap mine Manuels River occurrence...Purbeckโs Cove quarry Flat Water Pond chrome-mica rock occurrence Rambler mines Deer Cove occurrence Goldenville...Pond Cow Head occurrences Stearing Island, White Rock Islets Parsons Pond oil Newfoundland Zinc mine Port...Montagne, รle du Havre Aubert Crenulated gypsum-bearing rock, Collines de la Demoiselle Avalon shoreline near...Trans-Canada Highway Barite vein cutting volcanic rock, Trans-Canada Highway Tabular barite crystals, Trans-Canada |  | | Report (issue) | | in South America. The main characteristics of the rock suites recognized and discussed below are set out...recently. However, recently obtained Rb-Sr whole-rock systematics establish minimum Ordovician-Devonian...Series, v. 71, 156 p. Halpern, M., 1972, Rb-Sr total rock and mineral ages from the Marguerite Bay area, Kohler...isotope data on garnet-whole-rock pairs from paragneisses. Rb-Sr whole-rock data of orthogneisses have...and sills and, on the west coast, large gabbroic bodies. This period of basic magmatism, associated with |
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Ultramafic rock bodies, Haddam, Middlesex County, Connecticut, USA