 | | Journal (article/letter/editorial) | | KIMBERLITE AND RELATED ROCKS IN THE MOSES ROCK DIKE, SAN JUAN COUNTY, UTAHI Tnorr.qs R. McGrrcyrN, Department...asadena,Cal'iJornia9 1109 7'echnolo Alsrnacr The Moses Rock dike, a u'ell-exposed,kimberlite-bearing breccia...Permian Cutler Formation, in eastern Monument Valley, Utah. Petrographic, bulk chemical, and electron microprobe...grains in kimberlite are unlike associated dense rock fragments, except rare therzolite: (2) kimberlite...site for volatiles in the upper mantle: (6) dense rock fragments (except lherzolite) are unrelated to the |  | | Journal (article/letter/editorial) | | garnet-pyroxenite xenolith from the diatreme at Moses Rock, Utah, document storage and transport of water and...chlorite + enstatite + diopside + ilmenite + titanian chondrodite is separated by diopside + "talc" from an...an assemblage of chlorite + diopside + ilmenite + pyrite. Euhedral grains of enstatite (0.02% A1203, 0...0.05% C a O ) + diopside record low temperatures, and high Mn/Fe in these pyroxenes was caused by growth...growth in chlorite-dominated rock. Derivation from garnet lherzolite is established by relict pyrope (Py |  | | Journal (article/letter/editorial) | | Geological Sciences, University of Texas, Austm, Texas USA Received September 25, 1975 Peridotite inclusions...or their partly hydrated equivalents, in the Cr-diopside group. Orthopyroxcnc-rich websterites and olivine...hydrated peridotites contain aluminous, calcic diopside (5 7% A1203), aluminous orthopyroxene (3 6% A1203)...crystals of garnet, olivine (near Fa8), and Cr-diopside represent garnet peridotite. Eclogites were not...flows of minette, a biotite-pyroxene-alkali feldspar rock, are c o m m o n near the pair o f diatremes and |  | | Journal (article/letter/editorial) | | I98l A pyrope-spinel(alkremite) xenolith from Moses Rock Dike: first known North American occurrence EreNe...alkremitexenolith from MosesRock Dike, San Juan County, Utah, a kimberlite pipe. Primary garnet and spinel...secondaryminslals that account for lessthan 5 percent of the rock. The presenceof ironbearing kornerupine in the secondaryminslnl...xenolith from Moses Rock Dike. a kimfsdils pipe on the southeasternedge of Monument Valley, Utah (McGsfshin...garnet-spinel"alkremite" (a mnemonicname of Russian origin for a rock enriched in Al, Si, and Mg (Pooomslsnko, 1975)) |  | | Journal (article/letter/editorial) | | Sciences, University of Texas, Austin, Texas 78712, USA Abstract. Crystal fragments of pyrope from diatremes...northeastern Arizona and 37~ 109~ in southeastern Utah, respectively. The Garnet Ridge cluster, a group...microbreccias, which are mixes of comminuted crustal rock and mineral fragments, anhedral fragments of largely...The microbreccias, like those described at the Moses Rock, Buell Park, and Green Knobs diatremes of the...Colorado 81224, USA 0010-7999/81/0076/0312/$01.80 313 of ultramafic microbreccias from Moses Rock (McGetchin |  | | Journal (article/letter/editorial) | | 2 and more H2O and F than the kimberlites in the USA and Yakutia in which this mineral was found previously...kimberlite bodies in the USA— the Buell Park pipe, Arizona [1] and the Moses Rock dike, Utah [9], and in three...show the pyrope content to be 3.6 kg per ton of rock. The pyrope grain size is 0.5-6 mm, the color varies...bulges on dikes, and very small stringers [7]. The rock at a depth of 83 m, where the titanoclinohumite...the first generation constitutes about 40% of the rock volume. Its partially serpentinized grains (up to |  | | Journal (article/letter/editorial) | | in K,O; these minettes contain phenocrysts of diopside and phlogopite in a groundmass rich in sanidine...and minette, because only in this area do the two rock types occur in direct association. Buell Park, the... 9 and 10, Fig. 1) I&ted Rock (at 8, Fig. 1) FR3: western end Black Rock (at 11, Fig. 1) BR4: central...the localities with a suspect age was resampled (rock TB7); based on the data in Table 1, we conclude...argon by phlogopite phenocrysts in the glass-rich rock. 3.2. Other age determinations on the Navajo rocks |  | | Journal (article/letter/editorial) | | Upper Mantle in the Buell Park Kimberlite, Arizona, USA Ken-ichiro Aoki 1, Kiyoshi Fujino 2 and Masaki...Ruslovaya pipe in Yakutia, Siberia [7, 8] and Moses Rock dike, Utah [9, 10], titanochondrodite in kimberlite...Plateau in northeastern Arizona and in areas adjoining Utah and New Mexico. The geology and petrography of these...rare amounts of forsterite, enstatite, pyrope, diopside, ilmenite, chromite, apatite and Na-rich tremolite...titanoclinohumite from kimberlite at the Moses Rock dike, Utah, 140 km NNW of the Buell Park occurrence |  | | Journal (article/letter/editorial) | | mantle which was warm but still below sillicate-rock melting temperatures. 2. Pyropes and inclusions...co-existing clinopyroxene is a slightly subcalcic chrome-diopside with significant jadeitic (NaRSi206) and tschermak...Estimates of temperature and pressure are based on the diopside-enstatite solvus [ 11] and the solubility of pyrope...with equilibration at about 850°C (taken from the diopside-enstatite solvus) and 16 kb or about 48 km. This...emplacement of a kimberlite-bearing breccia dike, San Juan County,Utah, Ph.D. Thesis, Calif. Inst. Tech. (1968) |  | | Journal (article/letter/editorial) | | AJ-20, University of Washington, Seattle, WA 98195, USA Abstract. Petrographic cvidence is prcsentcd for...the field with the isograd reaction: antigorite +diopside =olivine +tremolite + H 2 0 . It is therefore...known for m a n y decades as a vein and accessory rock-forming mineral in antigorite serpentinites of the...as a fragment in the kimberlitic diatreme of Moses Rock on the Colorado Plateau. This mode of occurrence...Park (Allen and Balk 1954; Aoki et al. 1976), Moses Rock (McGetchin and Silver 1970), and Green Knobs |  | | Journal (article/letter/editorial) | | 1329 Arizona Economic geology Aluminum, Maricopa county, Wickenberg (Sheridan, Michael F , et al.) tt-t2...(Mclean, W. John, er a/.) 7-E 1103 Hemihedrite,Pinal county, Florencemine, Maricopacounty, Wickenburg,Rat Tail...a/.) 7-8 1088 Kinoite, SantaRita mountains,Pima county (Anthony, John W., er a/.) 5-6 7O9 Phoenicochroite...and steam in Sl-units 9'10 1822 (Schmidt, Ernst.) Rock and mineral analysis 7-E 1453 (Maxwell, J. A.) ...Barros, er a/.) 1.2 224 Breccia Intrusive Utah, San Juan county, MosesRock dike, kimberlite (McGetchin, |  | | Report (chapter) | | crust and upper mantle xenoliths from Moses Rock Diatreme, Utah, has led to the discovery of evidence...fragment of the Farollan plate. Introduction Moses Rock Diatreme (Fig. 1) is a 6 km long fissure eruption...There are two contemporaneous Tertiary volcanic rock types occurring on the Colorado Plateau; a) Diatreme...microbreccia (SUM); a complex breccia of comminuted wall-rock and ultramafic material, held together by a fine...containing larger grains of olivine, garnet, chrome-diopside, enstatite, titanoclinohumite, chlorite and apatite |  | | Journal (article/letter/editorial) | | Petrogenesis of Eclogite Inclusions in the Moses Rock Dyke, Utah, U.S.A. S. L. Harley and D. H. Green With...mineralogy of fifteen eclogites from the Moses Rock kimberlitic dyke, Utah, has demonstrated complexity in compositional...grossular content of garnet and acmite, jadeite and diopside-hedenbergite content of pyroxene produce large...Petrogenese yon Eklogit-Einschliissen im Moses Rock Dyke, Utah, U. S. A. Eine detaillierte Studie der...Mineralogie von ftinfzehn Eklogiten vom Moses Rock Kimberlit-Dyke (Utah) mittels Mikrosonde zeigte komplexe |  | | Journal (article/letter/editorial) | | "Four Corners" region where New Mexico, Arizona, Utah, and Colorado abut, the boundaries of the Navajo...mineralogy of this series is alkali feldspar, diopside, and phlogopite [1]. Plagioclase is absent, and..."trachybasalts", "sanidine basalts" or "olivine-diopside vogesites" [1], and "shonkinites" [13,14]. These...electron microprobe, as described in 70 / // -":', UTAH / 112° lfl" 110o pO~9~ "~/ ': I / THE , THUMB...minettes (Agathla, The Thumb, Buell Park, and Black Rock) most comparable to the Mujeres mafic minettes. |  | | Journal (article/letter/editorial) | | Copyright 0 1997Elsevier Science Ltd Printed in the USA. All rights reserved 0016-7037/97$17.00 + .OO Pergamon...xenoliths from the Navajo Volcanic Field, southwestern USA PATRICK D. MAITIE,*.’ KENT C. CONDIE,“* JANE SELVERSTONE...Science, New Mexico Tech, Socorro, New Mexico 87801, USA *Department of Earth and Planetary Sciences, University...University of New Mexico, Albuquerque, New Mexico 87131, USA (Received November 19, 1996; accepted in revised...represented by xenolith Group IV and by xenoliths from the San Francisco Volcanic Field, occurs only northwest of |  | | Report (issue) | | CALITI ES OF UTAH by Kenneth C. Bullock UTAH GEOLOGICAL AND MINERAL SURVEY a division of the UTAH DEPARTMENT...JANUARY 1981 MINERALS AND MINERAL LOCALITIES OF UTAH by Kenneth C. Bullock Nature displays her most...State of Utah. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1 County Listings.... . . . . . . 1 Chapter II. Mining Districts of Utah . . . . . . . . . . . . . . . . . . . . . . . ..... . . . . . . . 4 Mineral Localities Listed by County . . . . . . . . . . . . . . . . . . . . . . . |  | | Journal (article/letter/editorial) | | DIATREME, A KIMBERLITE PIPE IN NORTHERN LARIMER COUNTY, COLORADO M. E. McCerwwr, ColoradoState Unittersity...magnesian ilmenite, perovskite, pyrope, chrome diopside, phiogopite, biotite, chromite, picotite, and...sourceof building materials, soil additives, and rock collectors' curios. The pipe penetrates granite...vertical joints. v i. ETROGRAPIIY Serpentirrized rock in the Sloan diatreme is very similar to ultramafic...1954; Shoemaker el ol., tr962; Watson, K. D., 1967), Utah (McGetchin and Silver, 1970), Kansas (Byrne el a1 |  | | Journal (article/letter/editorial) | | Sciences, Universityof Texas Austin, Texas 78712, USA Abstract. Eclogite inclusions from kimberlitic diatremes...Jdss (rim). Pyroxene cores are Cr-rich in another rock. Sharp compositional discontinuities and zoning...Geology,StanfordUniversity, Stanford, CA 94305, USA * Introduction The eclogite inclusions in the...other types of rock fragments in a serpentine-rich matrix in the Garnet Ridge, Moses Rock, and Mule Ear...northern group of Plateau diatremes near the Arizona-Utah border at about 37 ~ N, 109 ~ 45"W (Watson, 1967) |  | | Journal (article/letter/editorial) | | ON THE NAVAJO RESERVATION, ARIZONA H•.P•.• AND UTAH. E. GREGORY. INTRODUCTION. On the basisof ec...Miningconsists essentially in quarrying the garnetbearing rock, crushingit and .separating the garnets by washing...curio and jewelry storesin various citiesof Colorado,Utah, 'Arizona, NewMexicoandCalifornia, "Arizonarubies"are...uncut stonesand cut gems. In the storesalong the San Juan River and at trading postswithin the Navajo Reservation...with basicdikesand necks,as inclusionsin igneou.s rock and in volcanic agglomerate. Garnetdeposits of |  | | Report (volume) | | Geology of the Cedar Mesa-Boundary Butte Area San Juan County, Utah , GEOLOGICAL SURVEY BULLETIN Prepared... Geology of the Cedar Mesa-Boundary Butte Area San Juan County, Utah By ROBERT B. O'SULLIVAN GEOLOGICAL SURVEY...Geography________________________________________________________ Rock formations___________________________________________________...Sandstone Member_________________________ Organ Rock Tongue___________________________________ De Chelly...System_______________________________________________ San Rafael Group_________________________________________ |  | | Journal (article/letter/editorial) | | argillaceous and calcareous sediments in Riley County, east-central Kansas (Fig. 1). The diatremes are...brecciated rock which is often porphyritic in character. Depending upon the locality, the rock consists...xenoliths of locally derived calcareous country rock plus occasional xenoliths derived supposedly from...map of kimberlite diatremes that occur in Riley County, Kansas 62 H.O.A. Meyer and D. G. Brookins:...u e n t minerals, neither a representative whole rock chemical analysis, nor a modal analysis based on |  | | Journal (article/letter/editorial) | | Geology, UniÕersity of Georgia, Athens, GA 30602, USA Department of Geology and Geophysics, Woods Hole...Hole Oceanographic Institute, Woods Hole, MA 02543, USA Received 8 March 1999; accepted 13 August 1999 Abstract...Proterozoic crust of the Colorado Plateau, southwestern USA, was intruded in the mid-Tertiary by hypabyssal minettes...al., 1987. is to understand the distribution of rock types in an example of Proterozoic mantle lithosphere...porphyroclastic textures. There is no correlation of rock type Žlherzolite vs. harzburgite. with texture but |  | | Journal (article/letter/editorial) | | inclusions in pyrope crystals from Garnet Ridge, Arizona, USA: implications for processes in the upper mantle ...peridotitic origin, such as olivine, enstatite and diopside. The Ti-rich oxide minerals may constitute a potential...Sciences, University of Michigan, Ann Arbor, MI 48109, USA; Fax: 734-763-4690; E-mail: liping@umich.edu Editorial...monomineralic inclusions, including large olivine, diopside, enstatite or spinel grains that are usually surrounded...boundary between large inclusions of olivine, diopside or enstatite and their pyrope hosts (Fig. 1h) |  | | Journal (article/letter/editorial) | | Sciences, University of Texas, Austin, TX 78713, USA Abstract. Mineral associations and compositions...olivine, and next in abundance are orthopyroxene and diopside; these minerals confirm a peridotite source....crystallization, as suggested for dolomite in diopside from an African kimberlite (Hervig and Smith 1981)...and natural dolomite (Mg), NBS glass K412 (Si), diopside glass Di2Ti (Ti), synthetic anorthite (Ca,M),...traces of orthopyroxene and spinel exsolved from diopside, almost all of the olivine and pyroxene inclusions |  | | Report (volume) | | GEOLOGY OF THE SAN JUAN OIL FIELD, UTAH. By E. G. WOODRUFF. INTRODUCTION. LOCATION AND FIELD WORK. The...lies in southeastern Utah in the valley of the San Juan Kiver and in the county of the same name. Goodridge...who unhesitatingly offered every 76 SAN JUAN OIL FIELD, UTAH. 77 possible assistance, especially...reconnaissance along the San Juan River valley from Mancos, Colo., to the junction of San Juan and Colorado rivers...the formations with the strata exposed in the San Juan Mountains, but gave little attention to structure |
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