Improving estimates of streamflow characteristics by using Landsat-1 imagery
Este F. Hollyday
1976, Journal of Research of the U.S. Geological Survey (4) 517-531
Imagery from the first Earth Resources Technology Satellite (renamed Landsat-1) was used to discriminate physical features of drainage basins in an effort to improve equations used to estimate streamflow characteristics at gaged and ungaged sites. Records of 20 gaged basins in the Delmarva Peninsula of Maryland, Delaware, and Virginia were...
The aeromagnetic expression of bedrock geology between the Clinton-Newbury and Bloody Bluff fault zones, northeastern Massachusetts
Donald C. Alvord, Kenneth G. Bell, Maurice H. Pease Jr., Patrick J. Barosh
1976, Journal of Research of the U.S. Geological Survey (4) 601-604
The pattern of mapped bedrock geology in northeastern Massachusetts bears a striking similarity to patterns of aeromagnetic anomalies in the area. The correspondence of the geology with the anomaly pattern and lineaments on aeromagnetic maps is especially well shown northwest of Boston between the Clinton-Newbury and Bloody Bluff fault zones....
Fresh ground water found deep beneath Nantucket Island, Masachusetts
F. A. Kohout, E.H. Walker, Michael H. Bothner, J.C. Hathaway
1976, Journal of Research of the U.S. Geological Survey (4) 511-515
In a deep water-resources and stratigraphic test well near the center of Nantucket Island, about 30 miles (48 kilometres) off the New England coast, freshwater has been found at greater depths than predicted by the Ghyben-Herzberg principle. An uppermost lens of freshwater, which occupies relatively permeable glacial-outwash sand and gravel...
Volcanic rocks of the eastern and northern parts of the San Francisco volcanic field, Arizona
Richard B. Moore, Edward W. Wolfe, George E. Ulrich
1976, Journal of Research of the U.S. Geological Survey (4) 549-560
The eastern and northern parts of the San Francisco volcanic field, between San Francisco Mountain and the Little Colorado River, contain about 175 cinder cones, many with one or more associated lava flows, and one center of silicic volcanism, O'Leary Peak. Basaltic flows and cones are divided into five groups,...
Bulk chemical analyses of petrographic thin sections of rocks of the Samli area, western Turkey
James R. Lindsay, Gerhard W. Leo
1976, Journal of Research of the U.S. Geological Survey (4) 569-574
Petrographic thin sections have been analyzed for their major-element composition using a fusion-dilution technique and measuring the intensity of X-rays by means of the electron microprobe. The balsam-mounted thin sections were removed from the glass slides by soaking them in methylene chloride. The freed sections were mixed with twice their...
Gamma-ray spectrometer measurement of 238U/235U in uranium ore from a natural reactor at Oklo, Gabon
Robert M. Moxham
1976, Journal of Research of the U.S. Geological Survey (4) 589-592
About 20 years ago, Kuroda theorized that a high-grade uranium deposit emplaced about 2x109 years ago could achieve criticality and sustain a nuclear chain reaction, given a sufficient thickness of high-grade ore and an appropriate water content. Such a natural reactor was found in 1972 at the Oklo deposit, Gabon....
Prehnite in plutonic and metamorphic rocks of the northern Santa Lucia Range, Salinian block, California
Donald C. Ross
1976, Journal of Research of the U.S. Geological Survey (4) 561-568
Prehnite is abundant as monomineralic veins, as lenses in biotite, and as discrete patches and apparent primary crystals in both plutonic and metamorphic rocks along the west edge of the Salinian block in the northern Santa Lucia Range. The prehnite appears to be concentrated near the Sur fault zone but...
Confidence limits for flood-frequency curves computed from samples from Pearson type III populations
Clayton H. Hardison
1976, Journal of Research of the U.S. Geological Survey (4) 545-547
A study of T-year events computed from samples drawn from Pearson type III populations of known skew indicates that for skew coefficients between -1.0 and 1.0, confidence limits can be derived from the confidence limits computed for frequency curves based on samples from normal distributions. For samples from populations with...
Field verification of method for distributing flow through multiple-bridge openings
Fred N. Lee
1976, Journal of Research of the U.S. Geological Survey (4) 539-543
Field data collected at three sites in Louisiana having multiple-bridge openings were used to check a method of distribution of flow through two or more bridges. Actual peak discharges in the various main and overflow bridges ranged from 878 to 11,055 cubic feet per second (24.9 to 313 m2/s). The...
Sedimentary depositional environments of uranium and petroleum host rocks of the Jackson Group, south Texas
Kendell A. Dickinson
1976, Journal of Research of the U.S. Geological Survey (4) 615-629
Determination of depositional environments in rocks of the Jackson Group of late Eocene age aids in the exploration for uranium and petroleum in south Texas. During deposition of the Jackson Group, conditions were similar to those existing along the modern Gulf Coast of Texas except for a less arid climate...
Pre-Eocene rocks of Java, Indonesia
Keith B. Ketner, Kastowo, Subroto Modjo, C. W. Naeser, J. D. Obradovich, Keith Robinson, Tatan Suptandar, Wikarno
1976, Journal of Research of the U.S. Geological Survey (4) 605-614
The exposed pre-Eocene rocks of Java can be divided into two compound units for purposes of reconnaissance mapping and structural interpretation: a sedimentary sequence and melange. The sedimentary sequence consists of moderately deformed and little-metamorphosed conglomerate, sandstone, mudstone, claystone, chert, and limestone. The melange consists of a chaotic mechanical mixture...
Compositional variations in wolframite from the Hamme (Tungsten Queen) mine, North Carolina
M. L. Bird, J. E. Gair
1976, Journal of Research of the U.S. Geological Survey (4) 583-588
A microprobe study of wolframite from the Tungsten Queen mine, Hamme district, North Carolina, proves it to be almost pure huebnerite. Concentric zoning, which shows up as light-brown and dark-brown bands, indicates small variations in the content of FeO. There is no apparent correlation between the small variations in the...
Determining population size of territorial red-winged blackbirds
P.H. Albers
1976, Journal of Wildlife Management (40) 761-768
Population sizes of territorial male red-winged blackbirds (Agelaius phoeniceus) were determined with counts of territorial males (area count) and a Petersen-Lincoln Index method for roadsides (roadside estimate). Weather conditions and time of day did not influence either method. Combined roadside estimates had smaller error bounds than the individual transect estimates...
Viking orbital colorimetric images of Mars: Preliminary results
L.A. Soderblom
1976, Science (194) 97-99
Color reconstruction and ratios of orbital images of Mars confirm Earth-based measurements showing red/violet ratios for bright areas to be roughly 1.5 times greater than dark areas. The new results show complex variation among dark materials; dark streaks emanating from craters in southern cratered terrains are much bluer than dark...
Preliminary results from the Viking x-ray fluorescence experiment: The first sample from Chryse Planitia, Mars
P. Toulmin III, B. C. Clark, A. K. Baird, Klaus Keil, H. J. Rose Jr.
1976, Science (194) 81-84
Iron, calcium, aluminum, silicon, and sulfur are major elements in the first surface sample of Mars that has been analyzed by the Viking x-ray fluorescence spectrometer. Titanium is present in minor quantities. This is consistent with the sample being a mixture of fine silicate and oxide mineral grains, with a...
The "Soil" of Mars (Viking 1)
R.W. Shorthill, H.J. Moore II, R.F. Scott, R.E. Hutton, S. Liebes Jr., G.R. Spitzer
1976, Science (194) 91-97
The location of the Viking 1 lander is most ideal for the study of soil properties because it has one footpad in soft material and one on hard material. As each soil sample was acquired, information on soil properties was obtained. Although analysis is still under way, early results on...
Search for the Viking 2 landing site
H. Masursky, N.L. Crabill
1976, Science (194) 62-68
The search for the landing site of Viking 2 was more extensive than the search for the Viking 1 site. Seven times as much area (4.5 million square kilometers) was examined as for Viking 1. Cydonia (B1) and Capri (C1) sites were examined with the Viking 1...
Fine particles on Mars: Observations with the Viking 1 lander cameras
T.A. Mutch, R. E. Arvidson, A.B. Binder, F.O. Huck, E.C. Levinthal, S. Liebes Jr., E. C. Morris, D. Nummedal, James B. Pollack, C. Sagan
1976, Science (194) 87-91
Drifts of fine-grained sediment are present in the vicinity of the Viking 1 lander. Many drifts occur in the lees of large boulders. Morphologic analysis indicates that the last dynamic event was one of general deflation for at least some drifts. Particle cohesion implies that there is a distinct small-particle...
Geochronology of the Arabian Shield, western Saudi Arabia: K-Ar results
Robert J. Fleck, R. G. Coleman, H. R. Cornwall, W.R. Greenwood, D. G. Hadley, D. L. Schmidt, W. C. Prinz, James C. Ratte
1976, GSA Bulletin (87) 9-21
An orogenic event, correlated with the Pan-African event in eastern Africa, affected the Arabian Peninsula between 510 and 610 m.y. ago and is well-recorded geochronologically. The event probably included two thermal pulses or maxima, the first occurring between 560 and 610 m.y. ago and the second between 510 and 540...
Tectonic aspects of the Guatemala earthquake of 4 February 1976
George Plafker
1976, Science (193) 1201-1208
The locations of surface ruptures and the main shock epicenter indicate that the disastrous Guatemala earthquake of 4 February 1976 was tectonic in origin and generated mainly by slip on the Motagua fault, which has an arcuate roughly east-west trend across central Guatemala. Fault breakage was observed for 230 km....
Dinoflagellates: Fossil motile-stage tests from the Upper Cretaceous of the northern New Jersey coastal plain
F.E. May
1976, Science (193) 1128-1130
Fossil dinoflagellate tests have been considered to represent encysted, nonmotile stages. The discovery of flagellar porelike structures and probable trichocyst pores in the Upper Cretaceous genus Dinogymnium suggests that motile stage tests are also preserved as acid-resistant, organic-walled microfossils....
Organochlorine pesticide residues associated with mortality: Addivity of chlordane and endrin
J. Larry Ludke
1976, Bulletin of Environmental Contamination and Toxicology (16) 253-260
No abstract available....
Bicarbonate content of groundwater in carbonate rock in eastern North America
F.W. Trainer, R.C. Heath
1976, Journal of Hydrology (31) 37-55
In carbonate-rock terrane the most effective solution occurs where soil and vegetative cover facilitate biogenic production and storage of CO2 in the soil until part of it is carried downward in percolating water. Bicarbonate data for groundwater in eastern North America are examined in the light of these conditions, of...
Argon content of the Martian atmosphere at the Viking 1 landing site: Analysis by x-ray fluorescence spectroscopy
B. C. Clark, P. Toulmin III, A. K. Baird, Klaus Keil, H. J. Rose Jr.
1976, Science (193) 804-805
The argon content of the Martian atmosphere at the Viking 1 landing site is ≤ 0.15 millibar or ≤ 2 percent by volume (95 percent confidence level)....
Preliminary results from the Viking orbiter imaging experiment
M. H. Carr, H. Masursky, W.A. Baum, K.R. Blasius, G.A. Briggs, J.A. Cutts, T. Duxbury, R. Greeley, J. E. Guest, B.A. Smith, L.A. Soderblom, J. Veverka, J.B. Wellman
1976, Science (193) 766-776
During its first 30 orbits around Mars, the Viking orbiter took approximately 1000 photographic frames of the surface of Mars with resolutions that ranged from 100 meters to a little more than 1 kilometer. Most were of potential landing sites in Chryse Planitia and Cydonia and near Capri Chasma. Contiguous...
