Contrasting compositions of the youngest Columbia River basalt flows in Union and Wallowa Counties, northeastern Oregon
George W. Walker
1973, Geological Society of America Bulletin (84) 425-429
Note: This paper is dedicated to Aaron and Elizabeth Waters on the occasion of Dr. Waters' retirement.Several new chemical analyses of flows confined to a structural downwarp in northeastern Oregon indicate the first reported occurrence of Late-Yakima–type basalt in the region and the close stratigraphic association of Yakima–type and Late-Yakima–type...
Ironside Mountain, Oregon: A late Tertiary volcanic and structural enigma
T. P. Thayer, C. Ervin Brown
1973, Geological Society of America Bulletin (84) 489-498
Note: This paper is dedicated to Aaron and Elizabeth Waters on the occasion of Dr. Waters' retirement.Ironside Mountain is a 6- by 10-km block of folded rhyolite, andesite, and basalt flows of the Strawberry Volcanics bounded by a horse-shoe-shaped reverse fault and surrounded by Mesozoic rocks. The toe of the...
Petrology of Newberry Volcano, central Oregon
Michael W. Higgins
1973, Geological Society of America Bulletin (84) 455-487
Note: This paper is dedicated to Aaron and Elizabeth Waters on the occasion of Dr. Waters' retirement.The eastern flank of the central and southern Cascade Mountains is bordered by a belt of shield volcanoes that appears to be a subprovince of the Oregon high-alumina plateau basalt petrologic province. Most of...
Geochronology of Precambrian rocks of the Teton Range, Wyoming
John C. Reed Jr., R. E. Zartman
1973, Geological Society of America Bulletin (84) 561-582
Note: This paper is dedicated to Aaron and Elizabeth Waters on the occasion of Dr. Waters' retirement.The oldest rocks in the Teton Range are complexly deformed interlayered biotite gneiss, plagioclase gneiss, amphibole gneiss, and amphibolite. Also, within these rocks, there are concordant bodies of strongly lineated quartz monzonite gneiss, here...
Reconnaissance study of the strontium isotopic composition of Cenozoic volcanic rocks in the northwestern Great Basin
Donald C. Noble, Carl E. Hedge, Edwin H. McKee, Marjorie K. Korringa
1973, Geological Society of America Bulletin (84) 1393-1405
Sixteen mafic and intermediate lava flows of Eocene to Pleistocene age from the northwestern Great Basin have initial Sr87/Sr86 ratios of from 0.7029 to 0.7047. Seven upper Miocene mafic and intermediate lava flows have initial ratios of from 0.7037 to 0.7041, suggesting a common source for the Steens Basalt and contemporaneous...
Pahoehoe flows from the 1969–1971 Mauna Ulu eruption, Kilauea Volcano, Hawaii
Donald A. Swanson
1973, Geological Society of America Bulletin (84) 615-626
Note: This paper is dedicated to Aaron and Elizabeth Waters on the occasion of Dr. Waters' retirement.Three types of chemically similar pahoehoe flows were observed to form during the 1969–1971 Mauna Ulu eruption. (1) A cavernous type called shelly pahoehoe, characterized by fragile gas cavities, small tubes, and buckled fragments...
Zircon fission-track ages of Pearlette family ash beds in Meade County, Kansas
C. W. Naeser, Glen A. Izett, Ray E. Wilcox
1973, Geology (1) 93-95
Pearlette family volcanic ash beds at two faunally important late Cenozoic localities near Meade, Meade County, Kansas, are very similar in chemical and mineralogic composition, yet their zircon microphenocrysts have markedly different fission-track ages. Zircon microphenocrysts from type B Pearlette volcanic ash underlying sediments that contain the Borchers local fauna...
Hybrid origin of the absarokite-shoshonite-banakite Series, Absaroka Volcanic Field, Wyoming
Harold J. Prostka
1973, Geological Society of America Bulletin (84) 697-701
Textural and mineralogical features of potash-rich basaltic rocks of the absarokite-shoshonite-banakite series strongly suggest that most of the large crystals and aggregates in these rocks are xenocrysts and microxenoliths, not true phenocrysts as was previously thought. A hybrid origin, involving assimilation of gabbro by high-temperature syenitic magma, is proposed....
Miocene tholeiitic basalts of coastal Oregon and Washington and their relations to coeval basalts of the Columbia Plateau
Parke D. Snavely Jr., Norman S. MacLeod, Holly C. Wagner
1973, Geological Society of America Bulletin (84) 387-424
Note: This paper is dedicated to Aaron and Elizabeth Waters on the occasion of Dr. Waters' retirement.Tholeiitic basalt flows and breccias of Miocene age in western Oregon and Washington form three distinct stratigraphic units. Each unit was erupted from coastal vents marked by dikes and sills of the same composition...
Age of mineralization at Summitville, Colorado, as indicated by K-Ar dating of Alunite
H. H. Mehnert, P. W. Lipman, T. A. Steven
1973, Economic Geology (68) 399-401
No abstract available. ...
Flow of lava into the sea, 1969–1971, Kilauea Volcano, Hawaii
James G. Moore, R. L. Phillips, R.W. Grigg, D. W. Peterson, Don Swanson
1973, GSA Bulletin (84) 537-546
Lava from the Mauna Ulu eruption on Kilauea Volcano entered the sea on the south coast of the Island of Hawaii three times from 1969 to 1971. Two of these flows were investigated underwater by divers, one while lava was actively flowing.The June 1969 flow entered the sea as a...
Origin of Comb Layering and Orbicular Structure, Sierra Nevada Batholith, California
James G. Moore, J. P. Lockwood
1973, GSA Bulletin (84) 1-20
A new descriptive term, comb layering, is proposed to replace the informal term Willow Lake-type layering, first introduced by Poldervaart and Taubeneck (1959) to describe layering in granitoid rocks in which constituent crystals are oriented approximately perpendicular to individual layers. The term schlieren layering is proposed to describe the “normal” layering of granitic rocks...
Iron-formation in South America
John Van N. Dorr
1973, Economic Geology (68) 1005-1022
Except for recent studies by certain South American governmental and quasi-governmental companies and agencies, little effort has been devoted to study of the iron-formations from which the great iron ore deposits of South America formed. Great gaps in basic information exist. Iron-formation is found in the Guayana and Brazilian Precambrian...
Silica-carbonate alteration of serpentine: Wall rock alteration in mercury deposits of the California Coast Ranges
I. Barnes, J. R. O’Neil, J. B. Rapp, D. E. White
1973, Economic Geology (68) 388-398
Chemical, isotopic, and thermodynamic properties have been measured of CO 2-rich ground waters in the central California Coast Ranges. The acidic CO 2-rich waters react with serpentine to form silica-carbonate rock, the host rock of many mercury deposits in the Coast Range of California. In part the waters are of a metamorphic...
Gold-bearing arsenian pyrite determined by microprobe analysis, Cortez and Carlin Gold Mines, Nevada
J. D. Wells, T. E. Mullens
1973, Economic Geology (68) 187-201
Studies of polished sections and chemical analyses made by electron microprobe show that gold and arsenic in the unoxidized ores from the Cortez and Carlin mines are most abundant in pyrite. Gold, as particles too small to be seen under the microscope, along with arsenic is concentrated in tiny pyrite...
Blueschist metamorphism in the Yreka-Fort Jones area, Klamath Mountains, California
Preston E. Hotz
1973, Journal of Research of the U.S. Geological Survey (1) 53-61
Blueschist is plentiful in the Yreka-Fort Jones area, eastern Klamath Mountains, adjacent to a belt of serpentinite that marks the boundary between two fundamental lithologic units, an eastern belt of early Paleozoic sedimentary and metamorphic rocks, and a western greenstone-chert assemblage of late Paleozoic and Triassic(?) age. The blueschists, which contain lawsonite and glaucophane or crossite,...
The channeled scablands of eastern Washington : the geologic story of the Spokane flood
1973, Report
Annual compilation and analysis of hydrologic data for Pin Oak Creek, Trinity River basin, Texas, 1971
B.B. Hampton
1973, Report
The U.S. Soil Conservation Service is actively engaged in the installation of flood- and soil-erosion reducing measures in Texas under the authority of "The Flood Control Act of 1936 and 1944" and "Watershed Protection and Flood Prevention Act" (Public Law 566), as amended. The Soil Conservation Service has found a...
Lake Okeechobee seepage monitoring network
Donald J. McKenzie
1973, Open-File Report FL 73-018
This report summarizes the data collected at the five original monitoring sites along the south shore of Lake Okeechobee from January 29, 1970 to June 28, 1972. In order to use the hydrographs in this report to full advantage, they should be studied in conjunction with Meyer's graphs and text...
Thermal and mineral waters of nonmeteoric origin, California Coast Ranges
Donald E. White, Ivan Barnes, James R. O’Neil
1973, GSA Bulletin (84) 547-560
Recent isotope studies show that the waters involved in a variety of geologic processes are dominantly the local meteoric water of each area. In most active geothermal systems, the D/H ratio of the hot water is nearly identical with the local cold meteoric water, but the O18/O16 ratio has been shifted...
Lakes of Oregon, Volume 1: Clatsop, Columbia, and Tillamook Counties
R.B. Sanderson, M.V. Shulters, D. A. Curtiss
1973, Report
An inventory of lakes and reservoirs in Oregon has been needed for many years. Records have long been collected throughout the State to assess the quantity and quality of water from streams, but few data have been collected on water stored in Oregon's lakes and reservoirs. Such data are essential...
Geology of the Mississippian aquifer in Iowa
P. J. Horick, W. L. Steinhilber
1973, Report
No abstract available....
Value and validity of earth resources observations from space
Charles J. Robinove
1973, Hydrological Sciences Bulletin (18) 63-67
Observations of the earth from space can provide overall repetitive views in various regions of the electromagnetic spectrum. Data from such surveys can be used as the basis for more detailed observations from aircraft and on the ground to guide resource exploration, development, and conservation activities.The value of earth resource...
X-ray diffraction analysis of pictograph pigments from Toquima Cave, central Nevada
Edwin H. McKee, David H. Thomas
1973, American Antiquity (38) 112-113
X-ray diffraction analysis of red, yellow, white, and black pigments from pictographs in Toquima Cave in central Nevada reveals that gypsum was used as a binder in all colors; ocher (hematite and goethite) and carbon (charcoal) formed the coloring agents. Gypsum and ocher are not found in or near the...
Transient and steady-state salt transport between sediments and brine in closed lakes
Abraham Lerman, Blair F. Jones
1973, Limnology and Oceanography (18) 72-85
A diffusional transport model for Lake Abert, Oregon, predicts the rates of salt transport from pore fluids into lake waters. In a lake without outflow dissolved salts may migrate across the sediment-water interface in response to a concentration difference between lake and interstitial brine. Transport of salt upward is transient;...
