Aeromagnetic study of the midcontinent gravity high of central United States
Elizabeth R. King, Isidore Zietz
1971, Geological Society of America Bulletin (82) 2187-2208
A composite map of detailed aeromagnetic surveys over the midcontinent gravity high provides coverage of the 600-mi-long buried belt of mafic rocks of the Keweenawan Series from their outcrop localities in Minnesota and Wisconsin through Iowa and Nebraska. A map of the subsurface extent of the mafic rocks, based on...
Kaersutite - A product of reaction between pargasite and basanite at Dish Hill, California
H. G. Wilshire, L. C. Calk, E.C. Schwarzman
1971, Earth and Planetary Science Letters (10) 281-284
Paragasitic amphibole, occurring interstitially and as veins in peridotite inclusions in basanite, has reacted with the host basanite to form kaersutitic amphibole. The amphibole compositions vary with respect to distance from the edge of the xenolith; iron, titanium, and potassium contents are...
Uranium-series dating of some pleistocene marine deposits in Southern California
Barney J. Szabo, J. G. Vedder
1971, Earth and Planetary Science Letters (11) 283-290
Analyses of uranium isotopes and their long-lived daughter products showed evidence of uranium migration in most of the 22 fossil mollusk shell samples from marine terrace deposits in southern California. Two samples, however, remained an ideal closed system as indicated by concordant230Th/234U...
Modified Mercalli Intensity Scale of 1931 (abridged)
Jerry L. Coffman, editor(s)
1970, Earthquake Information Bulletin (USGS) (2) 25-25
[none]...
A computer program to trace seismic ray distribution in complex two-dimensional geological models
Nazieh K. Yacoub, James H. Scott
1970, Report
A computer program has been developed to trace seismic rays and their amplitudes and energies through complex two-dimensional geological models, for which boundaries between elastic units are defined by a series of digitized X-, Y-coordinate values. Input data for the program includes problem identification, control parameters, model coordinates and elastic...
Relationship between subsidence and volcanic load, Hawaii
J.G. Moore
1970, Bulletin Volcanologique (34) 562-576
A computer analysis of tide-gage records in the northeast Pacific indicates that the active volcanic islands of eastern Hawaii are subsiding at a rate considerably faster than the eustatic rise of sea level. The rate of absolute subsidence increases progressively toward the center of current activity on the Island of...
A proposed streamflow data program for Ohio
Peter W. Anttila
1970, Open-File Report 70-10
A streamflow data program is proposed for Ohio which consists of both data collection and data analysis. The program is proposed after a study which (1) established long-term objectives and goals for streamflow information, (2) examined and analyzed available data to determine its adequacy for meeting the established goals, and...
Development of the Astoria Canyon-Fan physiography and comparison with similar systems
C.H. Nelson, P.R. Carlson, J.V. Byrne, T. R. Alpha
1970, Marine Geology (8) 259-291
A detailed bathymetric study of Astoria Canyon and Astoria Fan provides a model for typical submarine canyon-fan systems. The present canyon head is 9 miles (17 km) west of the Columbia River mouth but buried Pleistocene channels appear to have connected the two features in the past. The canyon, which...
Study and interpretation of the chemical characteristics of natural water
John David Hem
1970, Water Supply Paper 1473
The chemical composition of natural water is derived from many different sources of solutes, including gases and aerosols from the atmosphere, weathering and erosion of rocks and soil, solution or precipitation reactions occurring below the land surface, and cultural effects resulting from activities of man. Some of the processes of...
Petrology of the Plutonic Rocks of west-central Alaska
Thomas P. Miller
1970, Open-File Report 71-210
A series of plutons in west-central Alaska defines the Hogatza plutonic belt which extends for about 200 miles in an east-west direction from the northeastern Seward Peninsula to the Koyukuk River. The plutonic rocks have an aggregate area of about 1,200 square miles and their composition, distribution, and possible petrogenesis...
Interim report on worldwide historic surface faulting
Manuel G. Bonilla, Jane M. Buchanan
1970, Open-File Report 70-34
This interim report presents data on and interrelations between the parameters L (length of surface rupture), D (maximum surface displacement), and M (Richter magnitude of associated earthquake) for the main traces of historic surface faults that have been reported in the worldwide literature. Original descriptions of the individual fault-events published...
Methods and applications of electrical simulation in ground-water studies in the lower Arkansas and Verdigris River Valleys, Arkansas and Oklahoma
M. S. Bedinger, J.E. Reed, C.J. Wells, B.F. Swafford
1970, Water Supply Paper 1971
The Arkansas River Multiple-Purpose Plan will provide year-round navigation on the Arkansas River from near its mouth to Muskogee, Okla., and on the Verdigris River from Muskogee to Catoosa, Okla. The altered regimen in the Arkansas and Verdigris Rivers will affect ground-water conditions in the adjacent alluvial aquifers. In 1957...
Analysis of Shublik Formation rocks from Mt. Michelson quadrangle, Alaska
Robert L. Detterman
1970, Open-File Report 70-101
Analysis of 88 samples from the Shublik formation on Fire Creek, Mt. Michelson Quadrangle, Alaska, are presented in tabular form. The results include the determination of elements by semiquantitative spectrographic analysis, phosphate by X-ray fluorescence, carbon dioxide by acid decomposable carbonate, total carbon by induction furnace, carbonate carbon by conversion...
Electrical-analog-model study of water resources of the Columbus area, Bartholomew County, Indiana
Frank A. Watkins, J. E. Heisel
1970, Water Supply Paper 1981
The Columbus study area is in part of a glacial outwash sand and gravel aquifer that was deposited in a preglacial bedrock valley. The study area extends from the north line of Bartholomew County to the south county line and includes a small part of Jackson County south of Sand...
An appraisal of ground water for irrigation in the Wadena area, central Minnesota
F.G. Lindholm
1970, Water Supply Paper 1983
The Wadena area is part of a large sandy plain in central Minnesota whose soils have low water-holding capacity. Drought conditions which adversely affect plant growth frequently occur in the summer when moisture is most needed. To reduce the risk of crop failure in the area supplemental irrigation is on...
Sediment transport by streams in the Palouse River basin, Washington and Idaho, July 1961-June 1965
P. R. Boucher
1970, Water Supply Paper 1899-C
The Palouse River basin covers about 3,300 square miles in southeastern Washington and northwestern Idaho. The eastern part of the basin is composed of steptoes and foothills which are generally above an altitude of 2,600 feet; the central part is of moderate local relief and is mantled chiefly by thick...
Water laws and concepts
H. E. Thomas
1970, Circular 629
Throughout human history various laws and customs have developed concerning the individual rights and rights in common to the waters of the earth. Many existing laws and concepts are clearly influenced by the environment in which they originated and reflect the relative abundance or scarcity of water. Many concepts reflect...
Petroleum possibilities of the Yukon-Koyukuk Province, Alaska
William Wallace Patton Jr.
1970, Open-File Report 70-257
The recent discovery of major oil resources on Alaska's North Slope has rekindled interest in the petroleum possibilities of the Yukon-Koyukuk province, a vast tract of Cretaceous rocks stretching along the west coast of Alaska from the Brooks Range to the Yukon delta. Attention was first focused on this region...
Water resources and related geology of Dera Ismail Khan district, West Pakistan, with reference to the availability of ground water for development
J. W. Hood, Lutfe Ali Khan, Khalid Jawaid
1970, Water Supply Paper 1608-K
Dera Ismail (D.I.) Khan District contains an area of 3,450 square miles between the right bank of the Indus River and the Sulaiman Range in westcentral West Pakistan. Agriculture is the principal source of income in the District, but only a small part of the arable land is fully utilized....
Silica sand deposits in the Monrovia area, Liberia
Sam Rosenblum, S.P. Srivastava
1970, Open-File Report 70-280
Thin surficial deposits of white silica sand occupy much of the flat coastal area of Liberia from Monrovia to Buchanan 100 km southeast; most of the sand is of good quality for glass manufacture. A lagoonal mode of origin is suggested for these essentially monomineralic deposits. Based on the average...
Chromite deposits of the north-central Zambales Range, Luzon, Philippines
Darwin L. Rossman
1970, Open-File Report 70-281
Peridotite and gabbro form an intrusive complex which is exposed over an area about 35 km wide and 150 km long in the center of the Zambales Range of western Luzon. The Zambales Complex is remarkable for its total known resources, mined and still remaining, of about 15 million metric...
A geochemical evaluation of the Ash Sha'ib mineral prospect, Asir quadrangle, Kingdom of Saudi Arabia
Glenn H. Allcott
1970, Open-File Report 70-2
The mineralized zone at the remotely located Ash Sha'ib ancient mine contains only a small tonnage of moderately low grade sulfide- bearing rock. Based on present data the gross value of the deposit, with a value of $25.00 or more per ton, is $20,000,000. A belt of metasedimentary rocks, intruded...
Hydrologic effects of floodwater-retarding structures on Garza-Little Elm Reservoir, Texas
Clarence R. Gilbert, Stanley P. Sauer
1970, Water Supply Paper 1984
The Texas District of the Water Resources Division of the U.S. Geological Survey has collected and analyzed hydrologic data since 1953 to define the effects of systems of floodwater-retarding structures on downstream water and sediment yield. The district project includes 11 study areas ranging from 18 to 80 square miles...
Standards for the classification of public coal lands
N. Wood Bass, Henry L. Smith, George Henry Horn
1970, Circular 633
In order to provide uniformity in the classification of coal lands in the public domain, certain standards have been prepared from time to time by the U.S. Geological Survey. The controlling factors are the depth, quality, and thickness of the coal beds. The first regulations were issued April 8, 1907;...
A digital model for aquifer evaluation
George Francis Pinder
1970, Techniques of Water-Resources Investigations 07-C1
