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| Hydrothermal Alteration Mineralogy in Newberry 2 Drill Core, Newberry Volcano, Oregon by Keith E. Bargar and Terry...iMenlo Park, CA INTRODUCTION Newberry Volcano, located in central Oregon about 40 km south of Bend, lies...western end of a volcanic terrain that extends across much of the southeastern part of Oregon, and becomes...the west (Macleod and others, 1976). The caldera of Newberry Volcano contains several hot-springs, fumaroles...1981; MacLeod and Sammel, 1982). Accordingly, Newberry 2, a 932 m deep drill hole was drilled by the |
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| OREGON GEOLOGY published by the Oregon Department of Geology and Mineral Industries . VOLUME 48, NUMBER...SEPTEMBER 1986 . \ LOCATION MAP 1 ""'GOH OREGON GEOLOGY (lSSN 0164-3304) VOLUME 48, NUMBER 9 ... SEPTEMBER 1986 Published monthly by the Oregon Department of Geology and MineraI Industries (Volumes...Supervisor Second class postage paid at Portland, Oregon. Subscription rates: 1 year $6; 3 years, $15. Single...subscription orders, renewals, and changes of address to Oregon Geology, 910 State Office Building, Portland, OR |
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| OREGOM GEOLOGY published by the Oregon Department of Geology and Mineral Industries VOLUME 44, NUMBER...NUMBER 11 NOVEMBER 19B2 '" ;. OREGON GEOLOGY (ISSN 0164-3304) VOLUME 44, NUMBER 11 NOVEMBER 1982 Published...Published monthly by the State of Oregon Department of Geology and Mineral Industries (Volumes I through...phone (503) 229-5580. OIL AND GAS NEWS Columbia County Reichhold Energy Corporation drilled Adams 34-28...recently completed redrill of Columbia County 4. Clatsop County Oregon Natural Gas Development Company's Patton |
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| ................ .77 31. Hexagonal, tabular, marcasite crystals and later rhombic siderite that line...370 m) were collected for this investigation. Volcanic glass and open spaces of fractures, vesicles,...drill holes located both outside and within the caldera show the effects of hydrothermal alteration. The...(DonnellyNolan and others, 1990). The most recent volcanic activity (about 900 years ago), at Glass Mountain...Mountain, occurs in the vicinity of the 7 x 12 km caldera (Figure 2) (Donnelly-Nolan and others, 1990). Figure |
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| elsevier.com/locate/oregeorev The Southeast Missouri (USA) Proterozoic iron metallogenic province—Types of...University of Central Missouri, Warrensburg, MO 64093, USA ARC Centre of Excellence in Ore Deposits, University...Available online 10 October 2013 Keywords: Missouri (USA) iron district Proterozoic Magnetite Hematite IOCG-IOA...IOCG-IOA a b s t r a c t The Southeast Missouri (USA) iron metallogenic province within the Mesoproterozoic...oxide magma, and/or by hydrothermal replacement of volcanic rocks. Iron oxides within all district deposits |
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| Geological Survey (USGS). The USGS has three national programs in mineralrelated studies. The Development...This information is essential for formulating a national mineral policy and for identifying secure foreign...mineral resources in covered areas of Alaska. The National Mineral Resources Assessment Program (NAMRAP)...communities, and all those who are concerned with national mineral policy and land use decisions. These mineralresource...land. The result is an integrated approach to national mineral-resource problems. VI PROGRAM TUESDAY |
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| this alteration resulted in severely weakened volcanic edifices that were susceptible to failure and...and in the Osceola Mudflow, Washington altered volcanic rocks, one covering about 20 km2 on the north...(1986) as outflow facies rhyolite tuff related to a caldera located about 10 km to the southeast in the Clearwater...rocks have been interpreted as being related to a caldera (McCulla, 1986). Turn vehicles around and drive...original composition and primary textures of many volcanic rocks are not discernable. In the Superior and |
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| complex and difficult, and more critical to the National Welfare. W^ V. E. McKELVEY, Director III CONTENTS...___72 California ___________________________72 Oregon ____________________________________76 Regional...___123 Nevada _____________________________124 Oregon _____________________________124 Washington __...coordination, acquisition, and storage _ _______124 National water data exchange ____________126 Water-data...___________________127 Water use ________________________127 National water-quality programs _ _ _ _ _ __ _132 Marine |
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| ________________ Lithium investigations in sedimentary and volcanic rocks ______________________ Phosphate investigation...—— —— _______ California _______________-_—————— Oregon ___________——-——--———-_-Washington _——————————————————...______________________ Nevada _____________________ Oregon ________________———___ Washington _________________...Coordination ___ Water-data storage system _____—__ National Water Data Exchange _____ Urban water program...program ________—__ Water use _____________________ National water quality programs ______ The Regional Aquifer-System |
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| A293-A298 of this chapter. Numerous Federal, State, county, 1and local agencies and other organizations and...-----Structural and geophysical studies_ - -----Grand Teton National Park and vicinity--Igneous and metamorp hie rocks_...___ _ Washington ___________________________ _ Oregon _______________________________ _ California _...and petrology-Con. Volcanic rocks and processes _________ -------_ Al19 Volcanic activity ______________________...______________________ _ 119 Chemistry of volcanic rocks and gases ____ _ 121 Xenoliths in basalt _____________________ |
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| Taipei, Taiwan, China. Science reports of the National Acta Geophys. Polonica- Acta Geophysica Polonica...Quaternaire. Pub lie avec le concours du Centre National de la Recherche Scientifique. Paris, France. Assoc...Geotechnical Journal. Revue Canadienne de Geotechnique. National Research Council of Canada. Ottawa, Ontario, Canada...Canadian Jour. Botany- Canadian Journal of Botany. National Research Council of Canada. Ottawa, Ontario, Canada...Jour. Chemistry- Canadian Journal of Chemistry. National Research Council of Canada. Ottawa, Ontario, Canada |
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| ---------------------------New Mexico -----------------------Oregon ---------------------------Utah --------------...-----------------------California -----------------------------Oregon -------------------------------Washington ----...---------~evada -------------------------------Oregon -------------------------------Washington ____...------------------129 Mineral studies --------------------130 Volcanic rocks and processes ------------131 Hawaiian volcanoes...-----------------132 Volcanic rocks in the Western United 132: States ----------------------132 Volcanic rocks in |
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| Christenson Franco Tassi Jean Vandemeulebrouck Editors Volcanic Lakes Advances in Volcanology Series editor...Franco Tassi Jean Vandemeulebrouck • • Editors Volcanic Lakes 123 Editors Dmitri Rouwet Sezione di...Science+Business Media (www.springer.com) Foreword Volcanic Lakes are fascinating. And useful. They trap....evaporate. They are dynamic balances of input, both volcanic and meteoric, and output (gas through-flux, evaporation...Seepage of acidic hydrothermal fluid weakens rock of volcanic edifices, making them prone to collapse. Accumulation |
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| Quaternaire. Publie avec le concours du Centre National de Ia Recherche Scientifique. Paris, France. Assoc...of the Association of Pacific Coast Geographers. Oregon State University Press. Corvallis, Oreg. Auk- Auk...Canada. Canada Natl. Mus. Nat. History Paper- National Museum of Canada Natural History Papers. Ottawa...Associate Committee on Soil and Snow Mechanics, National Research Council, and the Geotechnical Engineering...Canadian Jour. Botany- Canadian Journal of Botany. National Research Council of Canada. Ottawa, Ontario, Canada |
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| Taipei, Taiwan, China. Science reports of the National Acta Geophys. Polonica- Acta Geophysica Polonica...Canada. Canada Natl. Mus. Anthropology Papers- National Museum of Canada Anthropology Papers. Ottawa,...Canada. Canadian Alpine Jour. Alberta, Canada. National Museum of Canada Bulletin. Canadian Alpine Journal...Geotechnical Journal. Revue Canadienne de Geotechnique. National Research Council of Canada. Ottawa, Ontario, Canada...Canadian Jour. Botany- Canadian Journal of Botany. National Research Council of Canada. Ottawa, Ontario, Canada |
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| Late Mesozoic conglomeratic flysch in southwestern Oregon, and the problem of transport of coarse gravel...measurements of the Miocene geomagnetic field in Oregon: Pure and Appl. Geophysics, v. 82, p. 189-221,...Cuba; Acad. Ciencias URSS. Atlas nacional de Cuba [National atlas of Cuba]: Havana, Cuba, Acad. Ciencias de... 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 |
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| zircon, turquoise, nephrite jade, and jadeite jade) USA Aquamarine Emerald Jadeite jade Nephrite jade Peridot...pegmatite areas include the Pala area of San Diego County in California, the Nuristan area of Afghanistan... Kenya rubies (Mangari area of the Tsavo West National Park) are found in micaceous metamorphic rocks;...climate GEOARCHAEOLOGY 17 Figure 2 Sedgefield, County Durham. Fluxgate gradiometer data. 1 0.5 m. Romano...densities. In 1972, the first survey of Canada’s National Geochemical Reconnaissance program collected lake |
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| Herbert Kroll (Münster), Rob Lavisnky (Dallas, USA), Heike Lehner (Heidelberg), Joachim Lorenz (Karlstein.... . . . . . . . . . . . . . . . . . . . Mixed Volcanic Activity: Stratovolcanoes . . . . . . . . . ..... . . . . . . . . . . . . . . . . . . . . . . Volcanic Exhalations . . . . . . . . . . . . . . . . ..... . . . . . . . . . . . . . . . . . . . . . . Volcanic Roots and Magma Chambers. . . . . . . . . . ..... . . . . . . . . . . . . . . . . . . . . . . Volcanic Gases. . . . . . . . . . . . . . . . . . . . |
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| Manga • Len Sharp • Theodore Snow • Dinah Zike National Geographic (t, c)Getty Images, (b)Paul Chesley/Getty...photo on the cover was taken in Hawaii Volcanoes National Park on the big island of Hawaii. The lava in...publisher. The National Geographic features were designed and developed by the National Geographic’s Children’s...Education Division. Copyright © National Geographic. The name “National Geographic” and the Yellow Border...Border Rectangle are trademarks of National Geographic and their use, without prior written permission, |
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| glacial Lake Missoula in western Washington State (USA). However, most material deposited from suspension...latter, although they are clearly important in hot volcanic dust suspensions (e.g., ignimbrites). The most...Mississippi Delta on the south east coast of the USA, showing a sediment plume issuing from the mouth...Tanganyika), whereas those in areas containing volcanic rocks and old sediments are sand- and mud-rich...transport for Nahal Yatir, Israel and Oak Creek, USA (right) showing the difference between sediment fluxes |
