Color infrared film as a negative material
Robert W. Pease
1970, Remote Sensing of Environment (1) 195-198
Original problems encountered in endeavors to use color infraredfilm as a negative material have been overcome by a simple modification in processing. This makes more feasible the production of infrared color prints for field use and yields an infrared counterpart to Aero-Neg....
Using radar imagery for crop discrimination: a statistical and conditional probability study
R. M. Haralick, F. Caspall, D.S. Simonett
1970, Remote Sensing of Environment (1) 131-142
A number of the constraints with which remote sensing must contend in crop studies are outlined. They include sensor, identification accuracy, and congruencing constraints; the nature of the answers demanded of the sensor system; and the complex temporal variances of crops in large areas. Attention is then focused on several...
ERTS-A satellite imagery
Alden P. Colvocoresses
1970, Photogrammetric Engineering (36) 555-561
The first satellite designed to survey the Earth's resources is scheduled to be launched in 1972. This satellite, known as ERTS-A, will telemeter frames of imagery each covering 100-nautical-mile squares of the Earth. Except for the internal anomalies in the sensor system, the imagery, after being properly scaled, rectified, and...
A graphic presentation of stream gain or loss as an aid in understanding streamflow characteristics
Neil C. Koch
1970, Water Resources Research (6) 239-245
A graphic presentation of cumulative monthly stream gain or loss on a given stream reach is used as a tool to show whether the stream gain or loss is apparent or real, and to determine the magnitude, time, and cause of the gain or loss. The graphic method could also...
Interstitial water studies on small core samples, Deep Sea Drilling Project, Leg 5
F.T. Manheim, K.M. Chan, F.L. Sayles
1970, Initial reports of the Deep Sea Drilling Project (5) 501-511
Leg 5 samples fall into two categories with respect to interstitial water composition: 1) rapidly deposited terrigenous or appreciably terrigenous deposits, such as in Hole 35 (western Escanaba trough, off Cape Mendocino, California); and, 2) slowly deposited pelagic clays and biogenic muds and oozes. Interstitial waters in the former show...
North American Devonian conodont biostratigraphy
G Klapper , Charles Sandberg, C Collinson, J.W. Huddle, R.W. Orr, L.V. Richard, D Schumacher, G Seddon, T.T. Uyeno
1970, GSA Memoirs (127) 285-316
The Lower Devonian of Nevada provides a reference sequence of nine conodont faunas, five of which are also at Royal Creek, Yukon Territory. The first appearance of Icriodus woschmidti is comparable to that in the lower Gedinnian in Europe; the Polygnathus dehiscens- P. foveolatus lineage correlates with the Emsian. Directly...
Volcanic history of the San Juan Mountains, Colorado, as indicated by potassium-argon dating
Peter W. Lipman, Thomas A. Steven, Harald H. Mehnert
1970, GSA Bulletin (81) 2329-2352
Volcanic rocks in the San Juan Mountains constitute the largest erosional remnant of a once nearly continuous volcanic field that extended over much of the southern Rocky Mountains and adjacent areas in Oligocene and later time. Recent regional studies have shown that the gross petrologic evolution throughout the San Juan...
Correlation of aeromagnetics and aeroradioactivity with lithology in the Spotsylvania area, Virginia
S.K. Neuschel
1970, Geological Society of America Bulletin (81) 3575-3582
The U.S. Geological Survey made a detailed aeromagnetic and aeroradioactivity survey of 1050 sq mi of the Spotsylvania area in the Piedmont province of eastern Virginia. The study area consists of sixteen 7 1/2-minute quadrangles in Spotsylvania and adjoining counties, Virginia. East-west traverses were flown at a spacing of 1/2...
Geochemical balance of a small watershed and its geomorphic implications
E.T. Cleaves, A.E. Godfrey, O.P. Bricker
1970, Geological Society of America Bulletin (81) 3015-3032
A detailed input-output study of a small forested watershed draining the Wissahickon Formation in the Piedmont of Maryland revealed that chemical solution is five times as effective in removing material as is mechanical erosion. Solution weathering removes 16.9 tons/sq mi/yr of material compared with 3.2 tons/sq mi/yr by mechanical erosion....
A revision of stratigraphic nomenclature for middle precambrian rocks in Northern Michigan
W.F. Cannon, J. E. Gair
1970, Geological Society of America Bulletin (81) 2843-2846
The name Marquette Range Supergroup is proposed to supplant the term Animikie Series for middle Precambrian strata of the Northern Peninsula of Michigan and adjacent areas of Wisconsin. The Marquette Range Supergroup consists of the Chocolay, Menominee, Baraga, and Paint River Groups, as defined in previous literature. We feel that...
Selected ground-water data in the eugene-springfield area, southern Willamette Valley, oregon
F. J. Frank, Nyra A. Johnson
1970, Report
No abstract available....
A linear programming and least squares computer method for solving petrologic mixing problems
Thomas L. Wright, Patrick C. Doherty
1970, GSA Bulletin (81) 1995-2008
Problems of petrologic mixing have been solved using a two-stage computer-based calculation. First, linear programming is used to obtain an approximate solution and to identify non-negative solution values. Then a conventional least squares calculation is performed using the analyses represented by non-negative solution values as input to yield an optimum...
Mechanism of the Chilean Earthquakes of May 21 and 22, 1960
George Plafker, James C. Savage
1970, GSA Bulletin (81) 1001-1030
The Chilean earthquake sequence of May 21–22, 1960, was accompanied by linear zones of tectonic warping, including both uplift and subsidence relative to sea level. The region involved is more than 200 km wide and about 1000 km long, and lies along the continental margin between latitude 37° and 48°...
Thermal infrared investigations, Arbuckle Mountains, Oklahoma
L. C. Rowan, Terry W. Offield, Kenneth Watson, P. J. Cannon, R. D. Watson
1970, Bulletin of the Geological Society of America (81) 3549-3561
Thermal-infrared images obtained on flights over the Tishomingo anticline and South Flank areas near Mill Creek in the Arbuckle Mountains, Oklahoma, were used to study the possibility of identifying some common rock types from their diagnostic reflection and emission characteristics, and to evaluate the usefulness of infrared images in structural...
Distribution of silver and copper in placer gold derived from the northeastern part of the Colorado Mineral Belt
George A. Desborough, William H. Raymond, Paula J. Iagmin
1970, Economic Geology (65) 937-944
Placer gold grains from the modern streams originating in the Colorado Mineral Belt were examined for silver and copper content on a quantitative basis utilizing the electron microprobe. The variation among grains from a particular locality is large, but the mean silver content of the...
Cassiterite as an exsolution product in magnetite, Lost River tin mine, Alaska
George A. Desborough, C.L. Sainsbury
1970, Economic Geology (65) 1004-1006
No abstract available....
Age of the Morton and Montevideo gneisses and related rocks, southwestern Minnesota
S. S. Goldich, C. E. Hedge, T. W. Stern
1970, Bulletin of the Geological Society of America (81) 3671-3695
Granitic gneisses in the vicinities of Morton and Montevideo in the Minnesota River Valley are dated at 3550 m.y. ago and are the oldest rocks so far found in North America. The gneisses were altered in varying degree by younger events of which two have been dated at 2650 m.y....
International symposium on hydrometry
George F. Smoot
1970, Eos, Transactions, American Geophysical Union (51) 884-884
Approximately 520 engineers and scientists from 55 countries attended the International Symposium on Hydrometry held at Koblenz, Federal Republic of Germany, from September 13 through 22, 1970. The symposium was convened by Unesco and organized in cooperation with the World Meteorological Organizations (WMO), Unesco, the National Committee for the International...
Measurement of ultrasonic velocities in solids under hydrostatic pressure
L. Peselnick
1970, Journal of the Acoustical Society of America (48) 1324-1327
An ultrasonic method for determining velocity has been developed that is independent of phase‐change errors due to reflection of specimen waves from coupling films. The method also eliminates the possibility of error due to conditions of nonhydrostatic stress at a specimen‐transducer or specimen‐delay line interface. Preliminary data are given for Alcoa 2024‐T4 aluminum and...
Quartz gabbro and anorthositic gabbro: Markers of offset along the San Andreas fault in the California Coast Ranges
Donald C. Ross
1970, Bulletin of the Geological Society of America (81) 3647-3661
Large-scale lateral movement on the San Andreas fault zone is suggested by the distribution of gabbroic rocks that may be slivered remnants of oceanic crust. Distinctive and unusual hornblende quartz gabbro and anorthositic gabbro that are virtually identical both petrographically and chemically are exposed at Logan and Gold Hill in...
Eocene age of the Adak ‘Paleozoic (?)’ rocks, Aleutian Islands, Alaska
David W. Scholl, H. Gary Greene, Michael S. Marlow
1970, Bulletin of the Geological Society of America (81) 3583-3591
In 1948, several specimens identified as the plant genus Annularia, a primitive horsetail of Pennsylvanian or Permian age, were found in tuffaceous sandstone exposed near the northern end of Adak Island, Alaska. These beds form the basal part of the Andrew Lake Formation, a newly named sequence of marine sedimentary...
Graptolite succession across the Ordovician–Silurian boundary in south-eastern Alaska
Michael Churkin Jr., Claire Carter, George Donald Eberlein
1970, Journal of the Geological Society (126) 319-330
The first discovery in North America of a succession of graptolite faunas across the Ordovician–Silurian boundary has been made on Esquibel Island, in south-eastern Alaska, where five graptolite zones are represented in an 18 m interval of shale in the Descon Formation. Despite the thinness of...
Radial movements in the western Wyoming salient of the Cordilleran overthrust belt: Discussion
E. W. Tooker
1970, Bulletin of the Geological Society of America (81) 3503-3506
No abstract available....
Similarities, differences, and some genetic problems of the Wyoming and Colorado plateau types of uranium deposits in sandstone
R. P. Fischer
1970, Economic Geology (65) 778-784
Uranium deposits of the Wyoming roll type and the Colorado Plateau peneconcordant type are the principal domestic resources of uranium. Both types occur in lenticular sandstone beds of continental origin, have a similar suite of elements and minerals, are associated with mildly altered rock, and...
Uraninite-bearing contact metamorphic deposits, Heaths Peak, Carbon County, Wyoming
E.N. Harshman, Kenneth G. Bell
1970, Economic Geology (65) 849-855
Deposits that contain uraninite and sulfide minerals at Heaths Peak, Carbon County, Wyo., display a zoned distribution of metals from the edge of granite into adjacent metamorphic rocks. The metallic minerals -- uraninite, molybdenite, pyrite, chalcopyrite, galena, pyrrhotite, and marcasite -- are concentrated on the...
