Geochemical map of the Mount Eddy and Castle Crags Roadless Areas, Shasta, Siskiyou, and Trinity counties, California
J.A. Peterson, M.E. Caress
1983, Miscellaneous Field Studies Map 1529-A
The Mount Eddy and Castle , Crags Roadless Areas occupy 9,600 acres (39 km2) and 3,300 acres (13 km2), respectively, in Shasta, Siskiyou, and Trinity Counties, Calif., approximately 8 mi (13 km) west of the towns of Mount Shasta City and Dunsmuir (fig. 1). Access is provided by secondary roads...
Aeromagnetic and gravity maps of the east part of the Raymond Peak Roadless Area, Alpine County, California
Donald Plouff
1983, Miscellaneous Field Studies Map 1365-B
The Raymond Peak Roadless Area, 60 mi2 (153 km2) in area, is located at the crest of the Sierra Nevada approximately 13 min (21 km) south-southeast of Lake Tahoe. Markleeville, the seat of Alpine County, lies about 1.5 mi (2km) outside the northeast boundary...
Aeromagnetic and gravity maps of the Freel and Dardanelles Roadless Areas, Alpine and El Dorado counties, California
Donald Plouff
1983, Miscellaneous Field Studies Map 1322-B
The Freel and Dardanelles Roadless Areas comprise 51 mi2 (132 km2) in the central Sierra Nevada south of Lake Tahoe. The Sierra Nevada crest passes through the eastern part of the area. Prominent mountains include Stevens Peak (elev 10,061 ft), Waterhouse Peak (elev 9,497 ft), and Freel Peak (elev 10,881...
Reconnaissance geologic map of the Selway-Bitterroot Wilderness, Idaho County, Idaho, and Missoula and Ravalli counties, Montana
Margo I. Toth
1983, Miscellaneous Field Studies Map 1495-B
The Selway-Bitterroot Wilderness covers about 1.25 million acres in east-central Idaho and western Montana (fig. 1). The wilderness lies across the Bitterroot Range, which forms the boundary between Idaho and Montana, and includes large portions of the drainages of the Selway, Lochsa, and Bitterroot Rivers. Elevations range from 1,800 ft...
Regional magnetic and gravity features of the Gibson Dome area and surrounding region, Paradox Basin, Utah: A preliminary report
T.G. Hildenbrand, R.P. Kucks
1983, Open-File Report 83-359
Analyses of regional gravity and magnetic anomaly maps have been carried out to assist in the evaluation of the Gibson Dome area as a possible repository site for high-level radioactive waste. Derivative, wavelength-filtered, and trend maps were compiled to aid in properly locating major geophysical trends corresponding to faults, folds,...
Garnet peridotites from Williams kimberlites, north-central Montana, U.S.A
B.C. Hearn, E. S. McGee
1983, Open-File Report 83-172
Two Williams kimberlites, 250x350m and 37x390m, in the eastern part of a swarm of 30 middle Eocene alnoitic diatremes in north-central Montana, USA, contain xenoliths of garnet-bearing lherzolites, harzburgites and dunites, in addition to spinel peridotites and upper and lower crustal amphibolites and granulites. Colluvial purple, red, and pink garnets...
Aeromagnetic map of the West Clear Creek roadless area, Coconino and Yavapai Counties, Arizona
Willard E. Davis, George E. Ulrich
1983, Miscellaneous Field Studies Map 1555-B
The West Clear Creek Roadless Area lies within the Coconino National Forest in central Arizona (fig. 1) and includes parts of Yavapai and Coconino Counties. Camp Verde, the nearest population center, is approximately 7 miles (11 km) west of the area. West Clear Creek canyon begins on the east at...
Reworked Hantkenina speciments at Little Stave Creek, Alabama
Laurel M. Bybell, Richard Z. Poore
1983, Gulf Coast Association of Geological Societies Transactions (33) 253-256
The Eocene-Oligocene boundary in Mississippi and Alabama has been traditionally placed between the Shubuta Member of the Yazoo Formation and the overlying Red Bluff Formation (or its carbonate facies equivalent, the Bumpnose Formation). Consequently, the presence of Eocene planktonic foraminifers in the Red Bluff and Bumpnose has long been attributed...
Evidence for two pulses of glaciation during the late Proterozoic in northern Utah and southeastern Idaho
M. D. Crittenden Jr., N Christie-Blick, Paul K. Link
1983, Geological Society of America Bulletin (94) 437-450
A record of glaciation during late Proterozoic time is preserved in a number of localities extending from the Sheeprock Mountains, Utah, to Pocatello, Idaho, and from the Park City area 40 km east of Salt Lake City to the Deep Creek Range along the Utah-Nevada line. Over much of this...
The ophiolitic North Fork terrane in the Salmon River region, central Klamath Mountains, California
C.J. Ando, W. P. Irwin, D. L. Jones, J.B. Saleeby
1983, GSA Bulletin (94) 236-252
The North Fork terrane is an assemblage of ophiolitic and other oceanic volcanic and sedimentary rocks that has been internally imbricated and folded. The ophiolitic rocks form a north-trending belt through the central part of the region and consist of a disrupted sequence of homogeneous gabbro, diabase, massive to pillowed...
Correlation of metamorphosed Paleozoic strata of the southeastern Mojave Desert region, California and Arizona
Paul Stone, Keith A. Howard, Warren Hamilton
1983, GSA Bulletin (94) 1135-1147
Isolated outcrops of deformed, regionally metamorphosed Paleozoic strata are scattered within the southeastern Mojave Desert region of California and western Arizona. These strata unconformably overlie a basement of Proterozoic crystalline rocks and are overlain in turn by metamorphosed Mesozoic sedimentary rocks. The strata can be correlated lithostratigraphically with the classic...
Lithologic mapping using Landsat thematic mapper data
M. H. Podwysocki, J.W. Salisbury, O. D. Jones, D.L. Mimms
1983, Pecora VIII Symposium 169-169
The Landsat-4 Thematic Mapper (TM), with its new near infrared bands centered at 1.65 μm and 2.20 μm and spatial resolution of 30 m has been used to distinguish rocks containing minerals having ferric-iron absorption bands in the visible and near-infrared and Al-O- and CO3 absorption bands in the 2.1-2.4...
Vegetation characteristics important to common songbirds in east Texas
Richard N. Conner, James G. Dickson, Brian A. Locke, Charles A. Segelquist
1983, The Wilson Bulletin (95) 349-361
Multivariate studies of breeding bird communities have used principal component analysis (PCA) or several-group (three or more groups) discriminant function analysis (DFA) to ordinate bird species on vegetational continua (Cody 1968, James 1971, Whitmore 1975). In community studies, high resolution of habitat requirements for individual species is not always...
Intrusive rocks and plutonic belts of southeastern Alaska, U.S.A
David A. Brew, Robert P. Morrell
1983, GSA Memoirs (159) 171-194
About 30 percent of the 175,000-km2 area of southeastern Alaska is underlain by intrusive igneous rocks. Compilation of available information on the distribution, composition, and ages of these rocks indicates the presence of six major and six minor plutonic belts.From west to east, the major belts are: the Fairweather-Baranof belt of...
Relation of concealed faults to water quality and the formation of solution features in the Floridan aquifer, northeastern Florida, U.S.A.
G.W. Leve
1983, Journal of Hydrology (61) 251-264
Geological and hydrological information on the Floridan aquifer in northeastern Florida indicates that isolated occurrences of water having relatively high chloride concentration in the upper part of the aquifer may be associated with buried faults. Water having chloride concentrations of more than 700 mg l−1 occurs in the deeper zone of...
The chemical composition of lakes in the north‐central United States
Eville Gorham, Walter E. Dean, J.E. Sanger
1983, Limnology and Oceanography (28) 287-301
Lake waters of the north‐central U.S.A. are classified into five groups, based on increasing specific conductivity and changes in ionic composition from east to west, from Wisconsin through Minnesota to North and South Dakota. The most dilute group of waters has specific conductivities <29 µmhos · cm−1 at 25°C; the most concentrated...
Wandering terranes in southern Alaska: The Aleutia Microplate and implications for the Bering Sea
Michael S. Marlow, Alan K. Cooper
1983, Journal of Geophysical Research B: Solid Earth (88) 3439-3446
Paleomagnetic and geological data suggest that much of southern Alaska is a collage of tectonostratigraphic terranes which originated in Mesozoic time at paleolatitudes far south of their present position. The time of ‘docking’ of the terranes against cratonic Alaska is critical to defining their amalgamated size and extent during their...
Use of pine nuts by grizzly and black bears in the Yellowstone area
Katherine C. Kendall
1983, Bears: Their Biology and Management (5) 166-173
The large seeds (pine nuts) of whitebark pine are commonly eaten in the spring (March-May) and fall (September-November) by grizzly and black bears in Yellowstone National Park and adjacent areas (Craighead and Craighead 1972, Blanchard 1978, Mealey 1980) and western Montana (Tisch 1961; J. Sumner and J. J. Craighead, unpubl....
Populations and habitat use of marine birds in the Semidi Islands, Alaska
Scott A. Hatch, Martha A. Hatch
1983, Murrelet (64) 39-46
About one-quarter of the resident seabirds in the Gulf of Alaska breed on the Semidi Islands. In terms of biomass, the proportion is closer to one-third. The most abundant birds are Common and Thick-billed Murres, with a combined population exceeding 1 million birds. Hundreds of thousands of Horned Puffins breed...
Nestling growth relationships of brown-headed cowbirds and dickcissels
Scott A. Hatch
1983, The Wilson Bulletin (95) 669-671
Data on nestling growth of brood parasites and their hosts are surprisingly few in the literature, Even the Brown-headed Cowbird (Molothrus ater), whose host relations have been studied in some other respects, has not been studied in any detail from this standpoint. This is particularly regrettable because the lack of...
LITHOLOGIC MAPPING USING LANDSAT THEMATIC MAPPER DATA.
M. H. Podwysocki, J.W. Salisbury, O. D. Jones, D.L. Mimms
1983, Conference Paper
The paper is in abstract form. It discusses the Landsat-4 Thematic Mapper (TM), with its new near infrared bands centered at 1. 65 mu m and 2. 20 mu m and spatial resolution of 30 m, which has been used to distinguish rocks containing minerals having ferric-iron absorption bands in...
Ground water in the northeast part of Twentynine Palms Marine Corps Base, Bagdad area, California
J. H. Koehler
1983, Water-Resources Investigations Report 83-4053
The hydrologic characteristics of the Bagdad area, in the northeast part of Twentynine Palms Marine Corps Base, were investigated to determine the feasibility of obtaining a supply of ground water. Five test holes were drilled and three of these were completed with 6-inch casings. Ground water in the eastern part...
Eastern Devonian shales: Organic geochemical studies, past and present
Irving A. Breger, Patrick G. Hatcher, L.A. Romankiw, F.P. Miknis
1983, Conference Paper, Preprints Symposia
The Eastern Devonian shales are represented by a sequence of sediments extending from New York state, south to the northern regions of Georgia and Alabama, and west into Ohio and to the Michigan and Ilinois Basins. Correlatives are known in Texas. The shale is regionally known by a number of...
Thermal areas on Kilauea and Mauna Loa Volcanoes, Hawaii
Thomas J. Casadevall, Richard W. Hazlett
1983, Journal of Volcanology and Geothermal Research (16) 173-188
Active thermal areas are concentrated in three areas on Mauna Loa and three areas on Kilauea. High-temperature fumaroles (115-362°C) on Mauna Loa are restricted to the summit caldera, whereas high-temperature fumaroles on Kilauea are found in the upper East Rift Zone (Mauna Ulu summit fumaroles, 562°C), middle East Rift Zone...
Hydrology of the Ferron Sandstone aquifer and effects of proposed surface-coal mining in Castle Valley, Utah, with a section on stratigraphy and a section on leaching of overburden
Gregory C. Lines, Daniel J. Morrissey, Thomas A. Ryer, Richard H. Fuller
1983, Water Supply Paper 2195
Coal in the Ferron Sandstone Member of the Mancos Shale of Cretaceous age has traditionally been mined by underground techniques in the Emery Coal Field in the southern end of Castle Valley in east-central Utah. However, approximately 99 million tons are recoverable by surface mining. Ground water in the Ferron...
