DOCSLIB.ORG

MINERAL RESOURCES of the JORDAN CRATERS WILDERNESS STUDY AREA, MALHEUR COUNTY, OREGON By

Total Page：16

File Type：pdf, Size：1020Kb

Download full-text PDF Read full-text
MINERAL RESOURCES of the JORDAN CRATERS WILDERNESS STUDY AREA, MALHEUR COUNTY, OREGON By DEPARTMENT OF THE INTERIOR UNTIED STATES GEOLOGICAL SURVEY MINERAL RESOURCES OF THE JORDAN CRATERS WILDERNESS STUDY AREA, MALHEUR COUNTY, OREGON By J.P. Calzia1, Susan Hubbard-Sharpless2, R.L. Turner3, Andrew Griscorn1, and D.L. Sawatzky3 U.S. Geological Survey and J.M. Linne3 U.S. Bureau of Mines U.S. Geological Survey Open-File Report 88-572 Prepared by the U.S. Geological Survey and the U.S. Bureau of Mines for the U.S. Bureau of Land Management This report is preliminary and has not been reviewed for conformity with U.S. Geological Survey editorial standards and stratigraphic nomenclature. Any use of trade names is for descriptive purposes only and does not imply endorsement by the U.S. Geological Survey. 1 - Menlo Park, CA 94025 2Blacksburg, VA 24060 3Spokane, WA 99202 1988 STUDIES RELATED TO WILDERNESS Bureau of Land Management Wilderness Study Area The Federal Land Policy and Management Act (Public Law 94-579, October 21,1976) requires the U.S. Geological Survey and the U.S. Bureau of Mines to conduct mineral surveys on certain areas to determine the mineral values, if any, that may be present Results must be made available to the public and be submitted to the President and the Congress. This report presents the results of a mineral survey of the Jordan Craters Wilderness Study Area (OR-003-128), Malheur County, Oregon. CONTENTS Summary 1 Abstract 1 Character and setting 1 Identified mineral resources and mineral resource potential 1 Introduction 1 Location and physiography 1 Previous studies 3 Present investigations 3 Appraisal of identified resources 3 Assessment of mineral resource potential 3 Geology 3 Geochemistry 4 Geophysics 4 Mineral resource potential 5 References cited 6 Appendixes 8 Definition of levels of mineral resource potential and certainty of assessment 9 Resource/reserve classification 10 Geologic time chart 11 FIGURE 1. Map showing location, mineral resource potential, and generalized geology of the Jordan Craters Wilderness Study Area, Malheur County, Oregon 2 111 SUMMARY Abstract At the request of the U.S. Bureau of Land Management, the U.S. Geological Survey and the U.S. Bureau of Mines evaluated approximately 23,225 acres within the Jordan Craters Wilderness Study Area (OR-003-128) for identified mineral resources (known) and for mineral resource potential (undiscovered). Within this report, the area studied is referred to as the "study area"; any reference to the Jordon Craters Wilderness Study Area refers only to that part for which a mineral survey was requested. Fieldwork for this report was done in 1986. There are no identified mineral resources within the study area, nor is there any potential for metallic, nonmetallic, uranium and thorium, or geothermal energy resources. There is low potential for undiscovered oil and gas resources in the study area. Basalt, sand, and gravel underlie most of the study area but is not considered a resource because basalt is abundant in the region and other sources are closer to existing markets. Character and Setting review process, mineral survey methods, and agency responsibilities was provided by The study area is in southeastern Oregon Beikman and others (1983). The U.S. Bureau about 18 mi northwest of the town of Jordan of Mines evaluates identified resources at indi­ Valley (fig. 1). The study area is in the north­ vidual mines and known mineralized areas by western Great Basin physiographic province collecting data on current and past mining and is covered by Cenozoic (see appendixes activities and through field examination of for geologic time chart) volcanic rocks. There mines, prospects, claims, and mineralized is no evidence of mining or prospecting within areas. Identified resources are classified the study area. according to a system that is a modification of that described by McKelvey (1972) and U.S. Identified Mineral Resources and Bureau of Mines and U.S. Geological Survey Mineral Resource Potential (1980). Studies by the U.S. Geological Survey are designed to provide a reasonable No mineral resources are identified in the scientific basis for assessing the potential for study area. Geologic, geochemical, geophys­ undiscovered mineral resources by determining ical, and mineral-resource studies suggest that geologic units and structures, possible envi­ there is no potential for metallic, nonmetallic, ronments of mineral deposition, presence of uranium and thorium, or geothermal energy geochemical and geophysical anomalies, and resources in the study area. There is low applicable ore-deposit models. Mineral as­ potential for undiscovered resources of oil and sessment methodology and terminology as gas in the study area. Basalt, sand, and gravel they apply to these surveys were discussed by underlie most of the study area and have a Goudarzi (1984). See appendixes for the number of commercial uses, but they are not definition of levels of mineral resource poten­ considered resources because they are abun­ tial and certainty of assessment and for the dant in the region and other sources are closer resourceA'eserve classification. to existing markets. Location and physiography INTRODUCTION The study area includes 23,225 acres This mineral survey was requested by the within a topographic depression on the U.S. Bureau of Land Management and is the Owyhee Plateau in southeastern Oregon (fig. result of a cooperative effort by the U.S. 1). Jordan Valley, Oregon, the nearest com­ Bureau of Mines and the U.S. Geological munity, is about 20 mi southeast of the study Survey. An introduction to the wilderness area. The topography of the study area is QTb , jeep trail XPPKOXIMATE BOUNDARY' TV, \ s " OF '- ^ -^- - JORDAN CRATERS \ WILDERNESS STUDY AREA N Jim (OR-003-128) QTb EXPLANATION Area having low mineral resource potential (L); data Contact Dashed where approximately located only suggest level of potential (B) Correlation of map units Commodity 1-Quatemary O,G Oil and gas J f-Quatemary/Tertiary ^CENOZOIC Geologic map units Tig I [-Tertiary Qb Alkaline olivine basalt of Jordan Craters (Quaternary) QTb Basalt (Quaternary and (or) Tertiary) Tig Leslie Gulch Tuff of Kittleman (1962a) (Tertiary) Figure 1. Map showing location, mineral resource potential, and generalized geology of the Jordan Craters Wilderness Study Area, Malheur County, Oregon shown on the Jordan Craters South, Jordan for potential decorative stone was conducted in Craters North, and Cow Lakes 7 1/21 quad­ the study area, and a few representative sam­ rangles. Elevations range from 4,320 ft near ples were collected. the south boundary of the study area to 4,700 ft at Coffeepot Crater. Vegetation consists of APPRAISAL OF IDENTIFIED grass and brush on hill slopes; the youngest RESOURCES volcanic flows are essentially devoid of vege­ tation. Access to the study area is limited to By J.M. Linne secondary roads from U.S. Highway 95, 8 mi Bureau of Mines north of Jordan Valley. The literature search and a thorough ground search indicated no areas of metallic Previous Studies mineralization or industrial minerals within or adjacent to the study area. No mining activity Kittleman and others (1965; 1967), Walker has been recorded within or near the study and Repenning (1966), and Walker (1977) area. None of the five rock-chip samples of described the regional geology of southeastern the Leslie Gulch Tuff Member of the Sucker Oregon. Hart and Mertzman (1983) described Creek Formation of Kittleman (1962a, b) the late Cenozoic volcanic stratigraphy of the contain zeolites or other valuable minerals in Jordan Valley area. Millhollen (1965) anomalous concentrations. Chemical analyses described the petrology and geology of the of three stream-sediment samples from these basalts of the Cow Creek Lakes area; Otto and rocks indicate normal crustal concentrations of Hutchison (1977) described the geology of the economic elements (Rimal, 1985). Several basalt of Jordan Craters. Previous geophysical small (less than 1 acre) isolated areas are investigations include an aerial radiometric and covered by thin platy blocks of basalt similar to magnetic survey for the U.S. Department of rock sold by stoneyards for facing material. Energy (Geometries, Inc., 1979) and an aero- None of these occurrences are large enough to magnetic survey by the U.S. Geological warrant quarrying. Survey (1972). ASSESSMENT OF MINERAL RESOURCE POTENTIAL Present Investigations By J. P. Calzia, Susan Hubbard- The U.S. Geological Survey conducted Sharpless, R. L. Turner, Andrew field investigations in the summer of 1986. Griscom, and D. L. Sawatzky Work consisted of geologic mapping, geo- Geological Survey chemical sampling and geophysical investiga­ tions including aeromagnetic, gravity, and Geology aerial gamma-ray surveys. Geochemical samples were collected to obtain information The study area is on the Owyhee Plateau about mineral suites and trace-element signa­ southeast of the Owyhee River in southeastern tures that suggest mineralized areas. Oregon. The topography and geology of this Bureau of Mines personnel examined region resulted from late Cenozoic crustal Malheur County records and U.S. Bureau of extension and magmatism (Stewart, 1971). Land Management master tide plats for mining Jordan Craters is a collective term for both claims in the study area; they also studied U.S. the group of four volcanic craters that form a Bureau of Mines library materials and produc­ northwest-trending lineament and the lava field tion records for additional information. During surrounding Coffeepot Crater, the youngest June 1986, a field search was conducted for and north westernmost crater of this lineament. prospects and mineralized zones in or near the Otto and Hutchison (1977) reported that study area. Traverses of the study area were cinder- and spatter-cone eruptions are charac­ made on foot, by helicopter, and by motor­ teristic of volcanic activity at Jordan Craters. cycle. A systematic aerial photo-based search Intermittent eruptions produced the cinder cone that stands 260 ft above the crater floor. The Rock samples were collected from altered last stage of volcanism began about 0.15 and unaltered outcrops and from stream float.
Load more

Recommended publications
  • DOGAMI Open-File Report O-92-09, Preliminary Geologic Map of the Jordan Craters South Quadrangle, Malheur County, Oregon
    OPEN-FILE REPORT 0-92-09 PRELIMINARY GEOLOGIC MAP OF THE JORDAN CRATERS SOUTH QUADRANGLE MALHEUR COUNTY, OREGON By M. L. Ferns, and N. S. MacLeod Oregon Department of Geology and Mineral Industries This unpublished Open-File Report has not been reviewed and may not meet all Oregon Department of Geology and Mineral Industries' standards. Field work conducted in 1990/1991 Map Scale: 1:24,000 Funding Statement: Funded jointly by the Oregon Department of Geology and Mineral Industries, the Oregon State Lottery, and the U. S. Geological Survey COGEOMAP Program as part of a cooperative effort to map the west half of the lo by 2O Boise sheet, eastern Oregon. Jordan Craters South A distinctive, densely-welded, high-silica rhyolite ashflow tuff (Ttlg?) comprises the oldest unit exposed in the Jordan Craters South quadrangle. The ashflow is characterized by high silica and low alumina abundance5 and is correlative with tuffs mapped by Plumley (1984) as Leslie Gulch Tuff in The Hole in the Ground quadrangle to the northwest. If his correlation is correct, Ttlg? is part of the outflow sheet erupted during formation of the Mahogany Mountain caldera tn the northeast. The ashflow is overlain by tuffaceous siltstones (Tsts) and aphyric platy andesite flows (Tmv). Tilted fault blocks comprised of all three units from steptoes around which younger basalts (Tbdb, Tbtm, QTb, Qbcb, Qbrb, and Qbjc) have flowed. The youngest of these (Qbjc) erupted at about 3,000 years ago from a small vent north of the quadrangle at Jordan Crater. The surface of the Qbjc flow is free of wind- blown silt and soil and contains many fragile surface features that are characteristic of very young basalt flows.
    [Show full text]
  • 2.2 State Risk Assessment
    Chapter 2: RISK ASSESSMENT | State Risk Assessment | Cultural Resources Summary » Wildfire 2.2 State Risk Assessment Requirement: 44 CFR §201.4(c)(2)(i): The risk assessment shall include… (i) An overview of the type and location of all natural hazards that can affect the State, including information on previous occurrences of hazard events, as well as the probability of future hazard events, using maps where appropriate; The spatial distribution of the facilities within hazard zones is not easily viewed on a statewide map. Therefore, maps depicting hazard zones and facilities within those zones have only been created at the regional scale. Those maps can be found in section 2.3, Regional Risk Assessments. Oregon Natural Hazards Mitigation Plan | September 2020 163 Chapter 2: RISK ASSESSMENT | State Risk Assessment | Coastal Hazards Summary » Wildfire 2.2.1 Coastal Hazards The Pacific Northwest (PNW) coast of Figure 2-29. Erosion at The Capes Oregon is without doubt one of the most Condominiums, Oceanside, Oregon dynamic coastal landscapes in North America, evident by its long sandy beaches, sheer coastal cliffs, dramatic headlands and vistas, and ultimately the power of the Pacific Ocean that serves to erode and change the shape of the coast. It is these qualities along with its various natural resources that have drawn people to live along its narrow shores. However, coastal communities are increasingly under threat from a variety of natural hazards that all come together along the coastal strip. These include wave-induced coastal erosion (both short and long term), wave runup and overtopping (wave-induced flood hazards), inundation Notes: The Capes, a multi-million dollar condominium of homes by wind-blown sand, coastal complex constructed on an old Holocene dune field landslides, earthquakes, and potentially adjacent to Oceanside.
    [Show full text]
  • Oregon's Owyhee Canyonlands
    Oregon’s Owyhee Canyonlands Protecting Our Desert Heritage A Citizens Guide to the Wild Owyhee Canyonlands Three Fingers Butte, proposed Wilderness in the Lower Owyhee Canyonlands. Photo: © Mark W. Lisk 2 oregon’s owyhee canyonlands: protecting oregon’s desert heritage At 1.9 million acres, the Owyhee Canyonlands represents one of the largest conservation opportunities in the United States. Welcome to Oregon’s Owyhee Canyonlands—the center of the sagebrush sea and iconic landscape of the arid West. This remote corner of Southeast Oregon calls to those seeking solitude, unconfined space and a self-reliant way of life. Come raft the Wild & Scenic Owyhee River; hunt big game and upland birds; and walk dry streambeds surrounded by geologic formations from another world. We live and visit here because it is truly unique. owyhee canyonlands campaign 3 Greeley Flat–Owyhee Breaks Wilderness Study Area. Photo © Mark W. Lisk The Oregon Owyhee Canyonlands Campaign is working to protect one of the most expansive and dramatic landscapes in the West, featuring rare wildlife, pristine waterways and incredible outdoor recreational opportunities. Stretching from the mountain ranges of the Great Basin to fertile expanses of the Snake River Plain, the Owyhee Desert ecosystem encompasses nearly 9 million acres across three states. Local residents refer to it as ION country, since the Canyonlands lie at the confluence of Idaho, Oregon and Nevada. The name Seventeen Owyhee hearkens back to a time before state lines were drawn, when three Hawaiian trappers were contiguous Wilderness Study killed by local residents. An archaic spelling of their island home (oh-WYE-hee) became the name of this Areas, spanning landscape of deep riverine canyons and sagebrush sea.
    [Show full text]
  • Oregon in Malheur County
    WILD ROGUE Welcome to JORDAN CRATERS! Jordan Craters is a volcanic field, covering 27 square miles with olivine basalt. This otherworldly scene is the result of lava flow that occurred in two main phases, both less than 30,000 years ago. This ancient lava field features craters, lava tubes and pahoehoe (a Hawaiian term meaning “ropy,” describing the smooth, billowy lava flows), showing just how mobile a lava flow can be. Drive right up to Coffee Pot Crater, a well-preserved, steep-sided crater that covers two-thirds of a square mile. Hike through or take photos of this alien-like terrain and explore the area’s beautiful and geologically violent past. Know before you go The area is full of RUGGED TERRAIN, footing is precarious. Lack of trails, sharp lava formations and open pits can be dangerous for the most experienced hiker. LAVA FIELDS can reach temperatures of more than 120 degrees during the summer. Dehydration is dangerous. Bring enough water to remain hydrated. roads are nearly impassable when wet. Winter weather makes access difficult. High-clearance, four-wheel-drive vehicles are recommended. directions Jordan Craters is located in the southeast corner of Oregon in Malheur County. From Highway 95, 8 miles north of Jordan Valley, turn west at the Jordan Craters sign onto Cow Creek Road. Follow BLM Jordan Craters access signs for 25 miles to the site. Contact info don’t forget! 100 Oregon Street Coffee Pot Crater: the only crater on site to offer Vale, OR 97918 vehicle access. This area also features roughly 541-473-3144 aligned spatter cones—blocks of lava that have [email protected] welded together, forming cones.
    [Show full text]
  • Basaltic Volcanism and Tectonics of the High Lava Plains, Southeastern Oregon
    AN ABSTRACT OF THE DISSERTATION OF Brennan T. Jordan for the degree of Doctor of Philosophy in Geology presented on June 28, 2001. Title: Basaltic Volcanism and Tectonics of the High Lava Plains, Southeastern Oregon. Redacted for privacy Abstract approved: Redacted for privacy David W. Graham The High Lava Plains province (HLP) of southeastern Oregon is a Miocene to Recent volcanic upland characterized by widespread basaltic volcanism and west-migrating rhyolitic volcanism. New 40Ar/39Ar ages for HLP rhyolites demonstrate that the trend of migrating rhyolitic volcanism is robust, reflecting westward migration at a rate of -35 kmlm.y. from 10 to 5 Ma, and -15 km/m.y after 5 Ma. This pattern mirrors the trend of northeastward migrating silicic volcanism of the Snake River Plain to the Yellowstone Plateau. HLP basaltic volcanism was relatively continuous with episodes of heightened activity at -7.6, -5.9, and 2-3 Ma. The 7.6 Ma event coincided with initiation of High Cascades volcanism suggesting a major regional tectonic event. HLP basalts are variably evolved high-alumina olivine tholeiites. Even primitive basalts are enriched relative to mid-ocean ridge basalts (MORB) in incompatible trace-elements, especially Ba, Sr, and Pb. HLP basalts are isotopically evolved relative to MORB with 87Sr/86Sr of 0.70305 to 0.70508 andENdof +6.7 to + 1.6. Isotopic characteristics of Pliocene and Quaternary basalts are more evolved in the east than the west. Miocene basalts are of more uniform isotopic character. Helium isotopes in Quaternary basalts are constant across the HLP with 3He/4He of -9RA,reflecting either a strongly depleted MORB source or interaction with a mantle plume.
    [Show full text]
  • Comparison of Two Landslides and Related Outburst
    COMPARISON OF LANDSLIDES AND THEIR RELATED OUTBURST FLOOD DEPOSITS, OWYHEE RIVER, SOUTHEASTERN OREGON _________________________________________________ A Thesis Presented to The Graduate Faculty Central Washington University _________________________________________________ In Partial Fulfillment of Requirements for the Degree Master of Science Geology _________________________________________________ by Shannon Marian Othus May 2008 CENTRAL WASHINGTON UNIVERSITY Graduate Studies We hereby approve the thesis of Shannon Marian Othus Candidate for the degree of Master of Science APPROVED FOR THE GRADUATE FACULTY _________________ ________________________________________ Dr. Lisa L. Ely, Committee Chair _________________ ________________________________________ Dr. Beth Pratt-Sitaula _________________ ________________________________________ Dr. Karl Lillquist _________________ ________________________________________ Dr. Wendy Bohrson, Geology Department Chair _________________ ________________________________________ Dean of Graduate Studies ii ABSTRACT COMPARISON OF LANDSLIDES AND THEIR RELATED OUTBURST FLOOD DEPOSITS, OWYHEE RIVER, SOUTHEASTERN OREGON by Shannon Marian Othus May 2008 Numerous landslides have entered the Owyhee River canyon north of Rome, Oregon. As the river flows through different lithologic units, the style of mass wasting changes from large slump events and small rock falls to large earthflows. The change in mechanism of mass wasting from upstream to downstream seems to depend on several factors: (1) the ratio of the
    [Show full text]
  • Volcano Type: Stratovolcano Composition: Andesite Most Recent Eruption: 6,700 Years Ago Threat Potential: High Glacier Peak
    High to Very High Threat Potential Low to Very Low Threat Potential WASHINGTON Mount Jefferson Mount Baker Belknap Glacier Peak Black Butte Crater Lava Field Mount Rainier Blue Lake Crater Mount St. Helens Cinnamon Butte Mount Adams Craters of the Moon Volcanic Field OREGON Davis Lake Volcanic Field Mount Hood Devils Garden Lava Field Three Sisters Diamond Craters Volcanic Field Newberry Volcano Four Craters Lava Field Crater Lake Hell's Half Acre Lava Field CALIFORNIA Indian Heaven Volcanic Field Medicine Lake Volcanno Jordan Craters Volcanic Field Mount Shasta Lava Mountain Lava Field Lassen Peak Sand Mountain Volcanic Field Moderate Threat Potential Wapi Lava Field Mount Bachelor West Crater Volcanic Field Mount Baker Location: Washington, Whatcom County Latitude: 48.777° N Longitude: 121.813° W Elevation: 3,286 (m) 10,781 (f) Volcano type: Stratovolcano Composition: Andesite Most recent eruption: 6,700 years ago Threat Potential: High Glacier Peak Location: Washington, Snohomish County Latitude: 48.112° N Longitude: 121.113° W Elevation: 3,213 (m) 10,541 (f) Volcano type: Stratovolcano Composition: Dacite Most recent eruption: 1,100 years ago Threat Potential: High * Mount Rainier Location: Washington, Pierce County Latitude: 46.853° N Longitude: 121.76° W Elevation: 4,392 (m) 14,410 (f) Volcano type: Stratovolcano Composition: Andesite to Dacite Most recent eruption: ∼1,000 years ago Nearby towns: Orting, Seattle, Tacoma, Yakima Threat Potential: High Mount St. Helens Location: Washington, Skamania County Latitude: 46.2° N Longitude:
    [Show full text]
  • ANCIENT VOLCANOES of Oregon
    The ANCIENT VOLCANOES of Oregon By HOWEL WILLIAMS CON DON LECTURES OREGON STATE SYSTEM OF HIGHER EDUCATION EUGENE, OREGON . .1953 THE CONDON LECTURES The Condon Lectureship was established in 1944 by the Oregon State Board of Higher Education upon the recommendation of the late Dr. John C. Merriam who was, at that time, a member of the faculty of the University of Oregon. The Lec- tureship was named in honor of Dr. Thomas Condon, the first professor of geology at the University. The purpose of the lectures is to interpret the results of significant scientific research to the nonspecialist. The lectures, usually two annually, are delivered three times in the state, namely, at Eugene, Corvallis, and Portland. They are then published in appropriately adapted form. CONDON LECTURE PUBLICATIONS The Ancient Volcanoes of Oregon. By Howel Williams, Chairman, Department of Geological Sciences, University of California. Jan., 1948. (Out of print.) MalaysiaCrossroads of the Orient. By Fay-Cooper Cole, Emeritus Chairman, Department of Anthropology, University of Chicago. Apr., 1948. 75 cents. The Ancient Forests of Oregon. By Ralph W. Chaney, Professor of Paleontology, University of California. Dec., 1948. $1.00. The China That Is To Be. By Kenneth Scott Latourette, and D. Willis James, Pro- fessor of Missions and Oriental History and Fellow of Berkeley College, Yale University. Mar., 1949. 75 cents. The Pacific Island Peoples in the Postwar World. By Felix M. Keesing, Execu- tive Head, Department of Sociology and Anthropology, Stanford University. Mar., 1950. 75 cents. Pacific Coast Earthquakes. By Perry Byerly, Professor Seismology, University of California. May, 1952. 75 cents.
    [Show full text]
  • Geological Society of America Bulletin, Published Online on 2 October 2012 As Doi:10.1130/B30574.1
    Geological Society of America Bulletin, published online on 2 October 2012 as doi:10.1130/B30574.1 Geological Society of America Bulletin Owyhee River intracanyon lava flows: Does the river give a dam? Lisa L. Ely, Cooper C. Brossy, P. Kyle House, Elizabeth B. Safran, Jim E. O'Connor, Duane E. Champion, Cassandra R. Fenton, Ninad R. Bondre, Caitlin A. Orem, Gordon E. Grant, Christopher D. Henry and Brent D. Turrin Geological Society of America Bulletin published online 2 October 2012; doi: 10.1130/B30574.1 Email alerting services click www.gsapubs.org/cgi/alerts to receive free e-mail alerts when new articles cite this article Subscribe click www.gsapubs.org/subscriptions/ to subscribe to Geological Society of America Bulletin Permission request click http://www.geosociety.org/pubs/copyrt.htm#gsa to contact GSA Copyright not claimed on content prepared wholly by U.S. government employees within scope of their employment. Individual scientists are hereby granted permission, without fees or further requests to GSA, to use a single figure, a single table, and/or a brief paragraph of text in subsequent works and to make unlimited copies of items in GSA's journals for noncommercial use in classrooms to further education and science. This file may not be posted to any Web site, but authors may post the abstracts only of their articles on their own or their organization's Web site providing the posting includes a reference to the article's full citation. GSA provides this and other forums for the presentation of diverse opinions and positions by scientists worldwide, regardless of their race, citizenship, gender, religion, or political viewpoint.
    [Show full text]
  • DOGAMI Open-File Report O-16-06, Metallic and Industrial Mineral Resource Potential of Southern and Eastern Oregon
    Oregon Department of Geology and Mineral Industries Brad Avy, State Geologist OPEN-FILE REPORT O-16-06 METALLIC AND INDUSTRIAL MINERAL RESOURCE POTENTIAL OF SOUTHERN AND EASTERN OREGON: REPORT TO THE OREGON LEGISLATURE Mineral Resource Potential High Moderate Low Present Not Found Base Metals Bentonite Chromite Diatomite Limestone Lithium Nickel Perlite Platinum Group Precious Metals Pumice Silica Sunstones Uranium Zeolite G E O L O G Y F A N O D T N M I E N M E T R R A A L P I E N D D U N S O T G R E I R E S O 1937 Ian P. Madin1, Robert A. Houston1, Clark A. Niewendorp1, Jason D. McClaughry2, Thomas J. Wiley1, and Carlie J.M. Duda1 2016 1 Oregon Department of Geology and Mineral Industries, 800 NE Oregon St., Ste. 965 Portland, OR 97232 2 Oregon Department of Geology and Mineral Industries, Baker City Field Office, Baker County Courthouse, 1995 3rd St., Ste. 130, Baker City, OR 97814 Metallic and Industrial Mineral Resource Potential of Southern and Eastern Oregon: Report to the Oregon Legislature NOTICE This product is for informational purposes and may not have been prepared for or be suitable for legal, engineering, or sur- veying purposes. Users of this information should review or consult the primary data and information sources to ascertain the usability of the information. This publication cannot substitute for site-specific investigations by qualified practitioners. Site-specific data may give results that differ from the results shown in the publication. Cover image: Maps show mineral resource potential by individual commodity.
    [Show full text]
  • DOGAMI MP-10, Articles on Recent Volcanism in Oregon
    STATE OF OREGON DEPARTMENT OF GEOLOGY AND MINERAL INDUSTRIES 1088 STATE OFFICE BUILDING PORTLAND OREGON 97201 Miscellaneous Paper No. 10 ARTICLES ON RECENT VULCANISM IN OREGON Reprinted from The ORE BIN 1965 STATE GOVE RNING BOARD Frank L .\1cColloch. Clza1rman Portland Harold Hanta BakP• Fa}t>tlf' I. Bri:-:.tul G1ant� Pa:. Holli M. Dole STATE GEOLOGIST The ORE BIN Volume 25, No. 3 March, 1963 RECENT VOLCANIC LANDFORMS IN CENTRAL OREGON* By Norman V. Peterson and Edward A. Groh** Introduction As the race to be the first mortals on the moon continues, the questions of how the lunar surface features originated and what rock types they contain are st iII not answered • Many of the lunar configurations that are telescopically visible cer­ tainly resemble volcanoes and features associated with them . Even if only a part of the moon's surface has been formed by valcan ic processes, some of the smaller volcanic forms; such as hummocky lava flow surfaces, spatter cones, and lava tubes could be present. If these features exist, they could provide ready-made shelters to protect men and vehicles from the hostile environment of radiation, high temperatures, and mef:eorite and dust bom­ bardment. A reconnaissance of the Bend-Fort Rock area in central Oregon shows that it has a wealth and variety of fresh volcanic landforms that should be of interest to the planners of our lunar programs as well as to the students of volcanology or to those curious about the rocks of Oregon . Recent Volcanic Activity in Oregon Before discussing central Oregon specifically, it may be well to look at the pattern of Recent volcanic activity in all of Oregon.
    [Show full text]
  • Jordan Craters Volcanic Field Nick Pollock, Ph.D
    14 July 2018 Jordan Craters Volcanic Field Nick Pollock, Ph.D. Candidate Department of Geosciences, Boise State University First, A Note of Caution! The Jordan Craters Volcanic Field contains a few potential hazards to visitors. In the middle of summer, the frequent high temperatures and lack of shade make dehydration and heat stroke a real concern. Make sure you take the proper precautions with sun protection, clothing, and an adequate water supply. Additionally, the surface of the lava flows can be quite unstable. Due to the nature of how they form, the surface of the lava may only be a thin crust above a large void space. Be careful with where you walk, beware of the possibility that the surface of the flows can collapse, and do not stand too close to the cliff edges. And finally, rattlesnakes are a common in the area. Make sure you pay attention to where you are walking and stay aware for rattlesnake warnings. Introduction Jordan Craters Volcanic Field contains a series of Holocene olivine basalt flows located in Malheur County in southeastern Oregon (Figure 1A). The lava flows fill a local depression of the Owyhee Plateau and cover an area of ~72 km2 (extent of lava flows indicated by red outline in Figure 1B). The ~1 km3 of lava filled an area once occupied by Cow Creek (Otto and Hutchinson, 1977), and today two lakes that bound the southeastern end of the lava flows are named Cow Lakes. Coffeepot Crater, the most prominent vent in the region, is found in the northwest corner of the field with the lavas prominently flowing out to the southeast.
    [Show full text]