 | | Journal (article/letter/editorial) | | pages405408, 1976 Sanidinefrom the Mesa Falls Tuff, Ashton, Idaho AsHurrBesu'nNr Cser.rEsJ. Vtre.t-tnNo I ndianaUniuersity...of the Yellowstone Tuff, in the vicinity of Ashton, Idaho, are unzoned and unaltered.Calculated formulae...electron-microprobeanalysis,permit classification of a[ as sanidine,near Oru* Ab* An,.u in the ternary feldspardiagram...B3). The unit crops out in the vicinity of Ashton, Idaho, and mechanicalerosion continually affords an...examination shows that the feldspar crystals are mainly sanidine. They are unaltered and unzoned and readily amenable |  | Ellis, B.S., Mark, D.F., Troch, J., Bachmann, O., Guillong, M., Kent, A.J.R., von Quadt, A. (2017) Split-grain 40Ar/39Ar dating: Integrating temporal and geochemical data from crystal cargoes. Chemical Geology, 457. 15-23 doi:10.1016/j.chemgeo.2017.03.005 | Journal (article/letter/editorial) | | , Oregon State University, Corvallis, OR 97330, USA b c a r t i c l e i n f o Article history: Received...Yellowstone Crystal cargo a b s t r a c t Large sanidine crystals from the Mesa Falls Tuff (MFT), Yellowstone...elements, trace elements, Pb and Sr isotopes in the sanidine and trace elements in the melt inclusions. This...and geochronological identity of an individual sanidine to be combined. Our MFT sanidines return a preferred...57, 9, 1677–1704) our data define a global mean sanidine 40Ar/39Ar age for the MFT of 1.3022 ± 0.0006/0 |  | | Report (issue) | | Island Park Caldera of Rhyolite and Basalt Eastern Idaho GEOLOGICAL SURVEY PROFESSIONAL PAPER 504-C Geology...Island Park Caldera of Rhyolite and Basalt Eastern Idaho By WARREN HAMILTON SHORTER CONTRIBUTIONS GEOLOGICAL...caldera, eastern Idaho-------------------------------- In pocket Index map of southern Idaho and adjacent...ISLAND PARK CALDERA OF RHYOLITE AND BASALT, EASTERN IDAHO By wARREN ABSTRACT The Island Park caldera, in...ash :flows are mostly welded ; and crystals of sanidine, high-quartz, and oligoclase are ubiquitous. A |  | Daniel K. Moore, Glenn F. Embree, Duane E. Champion, Mel A. Kuntz, Clayton S. Painter, Hailey Wilding (2022) Origin of Lava-Flow Benches in the Henrys Fork, Warm River, and Fall River Canyons, Idaho and Wyoming, and Origin of Upper and Lower Mesa Falls in Henrys Fork Canyon, Island Park, Idaho. Technical Report 22-01. Idaho Geological Survey | Report (issue) | | Warm River, and Fall River Canyons, Island Park, Idaho and Wyoming, and Origin of Upper and Lower Mesa...Mesa Falls in Henrys Fork Canyon, Island Park, Idaho Daniel K. Moore Glenn F. Embree Duane E. Champion Mel...Painter Hailey Wilding Idaho Geological Survey University of Idaho Moscow, Idaho 83844-3014 This Technical...Report is a product of independent work from non-Idaho Geological Survey personnel. This report is published...Henrys Fork, Warm River, and Fall River Canyons, Idaho and Wyoming, and Origin of Upper and Lower Mesa |  | | Journal (article/letter/editorial) | | Washington. At the pier at Marshall Hall (Charles County, M d . ) , is a 200 foot long, 10 foot wide sand...magnetite, milky and brownish quartz also present. Sanidine sand from Pyramid Lake, Nev. Monrovia is the...(colorless, milky, smoky) and glassy, colorless sanidine which has a beautiful bluish opalescence. Some...tiny, white snail shells also present. It is the sanidine which makes the sand of unusual interest. Herkimer...Nigeria, West Africa. River sand from Ashton, Scotland Ashton is on the east bank of Clyde River in |  | Jean, Marlon M, Christiansen, Eric H, Champion, Duane E, Vetter, Scott K, Phillips, William M, Schuth, Stephan, Shervais, John W (2018) Caldera Life-Cycles of the Yellowstone Hotspot Track: Death and Rebirth of the Heise Caldera. Journal of Petrology, 59 (8) 1643-1670 doi:10.1093/petrology/egy074 | Journal (article/letter/editorial) | | Brigham Young University, Provo, UT 846024606, USA Duane E. Champion4 4 U.S. Geological Survey, 345...94025, USA Scott K. Vetter5 5 Department of Geology, Centenary College, Shreveport, LA 71134, USA William...M. Phillips6 6 Idaho Geological Survey, University of Idaho, Moscow, ID 83844-3014, USA Stephan Schuth1...Geology, 4505 Old Main Hill, Logan, UT 84322-4505, USA Keywords: Yellowstone Hotspot, Heise eruptive center...recovered from a 700 m deep well drilled near Rexburg, Idaho. The paleomagnetic data, combined with the physical |  | | Report (issue) | | National Park and adjoining areas, Wyoming and Idaho by John D. Obradovich Open-File Report 92-408...the age of the Brunhes/Matuyama boundary is that sanidine for the normally magnetized Bishop Tuff (the constraining...instances, be in question. The reason why the sanidine ages are too young, however, will not suffice...Butte Basalts are acceptable while the age for the sanidine from the Rhyolite of Snake River Butte is clearly...relationship to the first magmatic cycle. Dating of sanidine from these flows (Table 2a) reveals that this |  | Morelli, R.M., Hartlaub, R.P., Ashton, K.E., Ansdell, K.M. (2009) Evidence for enrichment of subcontinental lithospheric mantle from Paleoproterozoic intracratonic magmas: Geochemistry and U–Pb geochronology of Martin Group igneous rocks, western Rae Craton, Canada. Precambrian Research, 175 (1) 1-15 doi:10.1016/j.precamres.2009.04.005 | Journal (article/letter/editorial) | | Canada R.M. Morelli a,∗ , R.P. Hartlaub b , K.E. Ashton a , K.M. Ansdell c a Energy and Resources, Government...throughout the Churchill Province (Hoffman, 1988, 1989; Ashton et al., in press). Numerous Paleoproterozoic siliciclastic...of this crustal reworking (Fraser et al., 1970; Ashton et al., in press). Some such basinal successions...formation (Fraser et al., 1970; Ramaekers, 1981; Ashton et al., 2001). The objective of the present study...provided by Tremblay (1972), Hartlaub (1999), and Ashton et al. (2000, 2001), and a brief summary of the |  | Petrishcheva, Elena, Tiede, Lisa, Schweinar, Kevin, Habler, Gerlinde, Li, Chen, Gault, Baptiste, Abart, Rainer (2020) Spinodal decomposition in alkali feldspar studied by atom probe tomography. Physics and Chemistry of Minerals, 47 (7). doi:10.1007/s00269-020-01097-4 | Journal (article/letter/editorial) | | ion-exchange from two different feldspars, analbite-sanidine and adularia (Hovis 2017) (see Table 3). Despite...topochemically monoclinic alkali feldspar; analbite–sanidine and adularia models are taken from Hovis (2017)...modified from Hovis et al. (1991), their analbite–sanidine model with WH,KKNa adjusted to fit the binodal...NaNaK WS,KKNa [J mol ] [J mol ] [J K −1 analbite-sanidine 17400 adularia 11940 best fit 22000 13 −1 20630...bracketed by the respective properties of the analbite–sanidine and the adularia series. The solvus for an orthoclase |  | | Journal (article/letter/editorial) | | Carolina at Chapel Hill, Chapel Hill, NC 27599-3315, USA e-mail: afg@unc.edu Present Address: B. R. Johnson...Johnson Anadarko Petroleum, The Woodlands, TX, USA from exsolution of anorthite and must represent recrystallization...structural variants (microcline, orthoclase, and sanidine), and ‘‘megacrystic granites’’ is used for simplicity...Tuff and tuffs from Cerro Galán have 0–5 vol% sanidine, even in rocks with over 50 vol% crystals (Maughan...from Volcán Taapaca in Chile contain 0–5 vol% sanidine (Clavero et al. 2004; Higgins 2011a, b). Other |  | | Report (issue) | | STATE OF IDAHO Idaho State Board of Land Commissioners Governor and President of State Board of Land...Peterson, Serena Smith Sue Buckle, Pamela Peterson Idaho Bureau of Printing Leo Ames, Creative Director...Geology of Idaho Cenozoic Geology of Idaho Edited by Bill Bonnichsen Roy M. Breckenridge The Idaho Bureau...will become the Idaho Geological Survey at the University of Idaho on July 1, 1984 Idaho Department of...of Lands Bureau of Mines and Geology Moscow, Idaho 83843 M-01-9518 Contents . . . .. . .. . . . . |  | | Book (volume) | | guide to more than 1,000 specific locations in Idaho, lowa, Kansas, Minnesota, Missouri, Montana, Nebraska...Virginia VOLUME 3: THE NORTHWESTERN QUANDRANT Idaho, Iowa, Kansas, Minnesota, Missouri, Montana, Nebraska...TREASURES VOLUME ep The Northwestern Quadrant Idaho, Iowa, Kansas, Minnesota, Missouri, Montana, Nebraska...Principal Abbreviations and Mineral Location Numbers Idaho lowa Kansas Minnesota Missouri Montana Nebraska...volumes, through very precise directions and accurate county maps, to get you to the best and most accessible |  | | Report (issue) | | the renewed search for oil and gas in the Wyoming-Idaho thrust belt and to geothermal-energy evaluation...exploration of the geothermal potential in part of Idaho, 15-23 km (50 75 mi) to the southwest, has prompted...Paleocene strata. In contrast, the thrust sheets of the Idaho-Wyoming thrust belt, which were emplaced at a slightly...and others, 1955) and the geologic map of Teton County (J. D. Love, 1956a), the Hominy Peak Formation...region, Wyoming. Base from A. M. S. Driggs and Ashton quadrangles, 1:250,000, 1955. Indicated are CA) |  | | Report (issue) | | Yellowstone and Madison Junction quadrangles, Montana, Idaho, and Wyoming, by Warren Hamilton_______________...the Hebgen Lake-West Yellowstone area, Montana, Idaho, and Wyoming. Page 6 1. Damage to highways in epicentral...----------------------Map of parts of Montana, Idaho, and Wyoming showing epicenters of the Hebgen Lake...Centennial Valley- West Yellowstone region, Montana, Idaho, and Wyoming___________________________________...100-102. Hydrographs of100. Weli2S-20E-lac2, Blaine County, Idaho______________________________________________________ |  | | Report (volume) | | of Gold in Jasperoid, Elephant Head Area, Lander County, Nevada U.S. GEOLOGICAL SURVEY BULLETIN 2009 ...of Gold in Jasperoid, Elephant Head Area, Lander County, Nevada By TED G. THEODORE and GAIL M. JONES U...of gold in jasperoid, Elephant Head area, Lander County, Nevada I Ted G. Theodore and Gail M. Jones. p...ores-Geology-Nevada-Lander County. 2. JasperoidNevada-Lander County. 3. Geochemistry-Nevada-Lander County. I. Jones,...Geologic map of the Elephant Head area, Lander County, Nevada In pocket FIGURES 1. 2. 3. 4. 5. 6. 7 |  | Schneider, D.A., Heizler, M.T., Bickford, M.E., Wortman, G.L., Condie, K.C., Perilli, S. (2007) Timing constraints of orogeny to cratonization: Thermochronology of the Paleoproterozoic Trans-Hudson orogen, Manitoba and Saskatchewan, Canada. Precambrian Research, 153 (1) 65-95 doi:10.1016/j.precamres.2006.11.007 | Journal (article/letter/editorial) | | Geological Sciences, Ohio University, Athens, OH 45701, USA New Mexico Bureau of Geology and Mineral Resources...NM 87801, USA c Department of Earth Sciences, Syracuse University, Syracuse, NY 13244, USA d Department...Mexico Institute of Technology, Socorro, NM 87801, USA Received 22 February 2006; received in revised form...small solid box (BH) shows location of Black Hills, USA. WP: Wyoming Province. MHB: Medicine Hat Block. Modified...(Lucas et al., 1993; Chiarenzelli et al., 1998; Ashton et al., 2005). Significant crustal shortening and |  | | Journal (article/letter/editorial) | | Indian Queen mine ca. 1905 at Farlin, Beaverhead County. 208 ROCKS & MINERALS Downloaded by [University...mines at Butte in Silver Bow County and the Black Pine mine in Granite County have produced many fine crystal...Beaverhead County, the pegmatites of Jefferson County, and the Snowbird mine in Mineral County continue...Highlands Centennial Nugget in 1989 in Silver Bow County. The seventh largest gold nugget found in Montana;...should be sent to the author. LOCATIONS BY COUNTY Beaverhead County Anderson deposit, sec. 16, T. 12 S., R |  | Hwang, P., Taylor, W. R., Rocky, N. M. S., Ramsay, R. R. (1994) Mineralogy, geochemistry and petrogenesis of the Metters Bore No. 1 lamproite pipe, Calwynyardah Field, West Kimberley Province, Western Australia. Mineralogy and Petrology, 51 (2) 195-226 doi:10.1007/bf01159727 | Journal (article/letter/editorial) | | body by CRA Exploration Pty Ltd (as part of the Ashton Joint Venture diamond exploration program) documented...Minerals N.L.), were originally discovered by the Ashton Joint Venture during their regional exploration...volcaniclastic units and abundant in some HMC samples; sanidine; and pyrite, abundantly disseminated in drill-core...similar pleonastes from the Deer Butte lamproite (USA) as being derived from dissaggregated, Al-augite...4) Apatites are rich in SrO (up to 2 wt%). Rare sanidine is rich in K similar to other lamproitic sanidines |  | Christiansen, Robert L., Lowenstern, Jacob B., Smith, Robert B., Heasler, Henry, Morgan, Lisa A., Nathenson, Manuel, Mastin, Larry G., Muffler, L.J. Patrick, Robinson, Joel E. (2007) Preliminary Assessment of Volcanic and Hydrothermal Hazards in Yellowstone National Park and Vicinity. Open-File Report 2007-1071. US Geological Survey doi:10.3133/ofr20071071 | Report (issue) | | residents of the surrounding communities of Wyoming, Idaho, and Montana, the daily population exposure to these...Yellowstone Plateau volcanic field of Wyoming, Idaho, and Montana (fig. 2) is one of Earth's largest...branches to the northwest and west into Montana and Idaho, termed the intermountain seismic belt by Smith...Administration (FAA) radar site located on Sawtell Peak, Idaho, west of Yellowstone National Park, where the signals...comparable magnitude was the M=7.3 Borah Peak, Idaho, earthquake of 1983, about 150 km southwest of Yellowstone |  | | Journal (article/letter/editorial) | | on the Sponge Bob seamount, at 96.3 ± 1.0 Ma on Ashton seamount, at 92.3 ± 3.8 Ma on the Gago Coutinho...NWTore TMD3b-2: 80.5 ± 0.9 Ma 40˚ Iberia Lisbon Ashton TMD14-9: 96.3 ± 1.0 Ma Sponge Bob* TMD4-3: 102...investigated here are, from North to South, Sponge Bob, Ashton and Gago Couthino, reaching 3000 m, 3500 m, and...Porphyritic, microlithic fluidal 3–4mm-size euhedral sanidine Or36–42; Ab56–62 (sparse), biotite, titanite,...Fs21–27, titanite (very rare) 3811–3243 TMD4-8 Ashton Smt TMD14-9 Texture Feldspar laths, Fe–Ti ox |  | | Book (volume) | | beds, excavations, etc.Selenite roses. BRULE COUNTY AREA: in the Oacoma zone of the Pierre Fm. On Elm...gray Barite rosette up to 5 or 6 inches. CAMPBELL COUNTY MOUND CITY, W to the Missouri R., regional hillsides...gravels, etc.petrified wood, wood opal. CORSON COUNTY LITTLE EAGLE: area ridges, slopes, stream beds...Guide for Rock Hounds in the United States CUSTER COUNTY AREA: The November Mine, 1.2 mi. SE of the Needles...of rd. a few yds., outcropRose Quartz. DOUGLAS COUNTY CORSICA, S on US 281 to Armour, area rd. cuts, |  | | Book | | Bartholomew }® Dillon 44° Montana Se . (75) =: eye Idaho Grader& =e Dehler \ Borgo et al. ee Ketchum... once delighted volcanologists who visited Ashton, Idaho. The quarry was recently destroyed to build...Jurassic Twin Creek Formation, northwest of Geneva, Idaho. (Photograph by Paul Link) Bottom Left - Aerial...of Eastern Idaho Edited by Scott S. Hughes and Glenn D. Thackray Department of Geology Idaho State University... Funding provided by Idaho State University College of Arts and Sciences Idaho State University Office |  | | Book | | Plain-Yellowstone Volcanic Province Jackson, Wyoming to Boise, Idaho July 2 t-29, t 989 Field Trip Guidebook T305 Editor:...basaltic tuff cones on the eastern Snake River Plain, Idaho. (Photograph by W.R. Hackett) LOWER LEFT Pleistocene...southwestern Idaho. (Photograph by W.R. Hackett) Leaders: Richard P. Smith EG&G, Idaho P.O. Box 1625...1625 Idaho Falls, ID 83415 William F. Downs Jacobs Engineering Group, Inc. 5301 Central Ave., NE Suite 1700...Middlfield Road Menlo Park, CA 94025 w. R. Hacket Idaho State University P.O. Box 8072 Pocatello, ID 83209 |  | | Journal (article/letter/editorial) | | Zn-Pb orebodies (at Navan, Ireland; Andrew and Ashton, 1985 ); at magmatic-hydrothermal Ni-Cu-PGE complexes...volcanics containing olivine, pyroxene, amphibole, sanidine, etc.; carbonate fragments), partial or complete...Missouri, Rolla, Mo., pp. 373-384. Andrew, C.J. and Ashton, J.H., 1985. Regional setting, geology and metal...mineralization, Main Pit, Carlin gold mine, Nevada, USA. In: A.J. Macdonald (Editor), Gold '86, Toronto....ash-flow tuffs without calderas in southwestern Idaho. U.S. Geol. Surv. Prof. Pap., 1272, 76 pp. Embleton |  | | Book (volume) | | ...........................................139 Idaho...................................................rights, so remember you were told. If in doubt, a county map will tell you who the legal owner is. Good...gemmy qualities for cutting and polishing. AUTAUGA COUNTY PRATTVILLE, N. 6 mi., and just E of the Birmingham...were well known to prehistoric Indians.) BARBOUR COUNTY BAKER HILL, SE 1 mi. : 1 in a deep ravine, as a...deep red to variegated⎯ocher. BIBB COUNTY GENERAL AREA: c county gravel pits along the Cahaba R.⎯gemmy |
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