Karst hydrology: A review
H. E. LeGrand, V. T. Stringfield
1973, Journal of Hydrology (20) 97-120
Karst regions of the world are characterized by limestones and other soluble rocks at or near land surface that have been modified by solutional erosion. Such surface features as sinks, long dry valleys, sparse streams, and bare rock and such subsurface features as caverns, arterial solution openings leading to large...
Ophiolites in the earth's crust: A symposium, field excursions, and cultural exchange in the USSR
Robert G. Coleman
1973, Geology (1) 51-54
No abstract available....
Water projects design with inadequate data: Madrid, Spain June 4-9, 1973
I. C. James II
1973, Eos, Transactions, American Geophysical Union (54) 935-937
The Symposium on the Design of Water Resources Projects with Inadequate Data drew 300 participants, representing more than 60 countries. The symposium was planned within the framework of the International Hydrological Decade and was convened by Unesco and WMO. Organization of the symposium was carried out by Unesco and the...
Fusion Relations in the System NaAlSi3O8-CaAl2Si2O8-KAlSi3O8-SiO2-H2O and Generation of Granitic Magmas in the Sierra Nevada Batholith
Dean C. Presnall, P. C. Bateman
1973, Geological Society of America Bulletin (84) 3181-3201
Chemical analyses of 167 typical specimens indicate that about 95 percent of the intrusive rocks of the central Sierra Nevada contain more than 79 percent normative Ab + An + Or + Qz. If the composition of the lower continental crust is similar to or slightly more felsic than andesite,...
Potassium-argon ages of lavas from the Hawi and Pololu Volcanic Series, Kohala Volcano, Hawaii: Reply
Ian McDougall, Donald A. Swanson
1973, Geological Society of America Bulletin (84) 3485-3487
No abstract available....
Stable isotope and chemical relations during mineralization in the Bodie mining district, Mono County, California
J. R. O’Neil, M.L. Silberman, B.P. Fabbi, C. W. Chesterman
1973, Economic Geology (68) 765-784
Stable isotope and chemical relations have been determined in a typical epithermal Au-Ag deposit located in the Bodie mining district of California. Analyses were made of altered host rocks, vein minerals, alteration clays, fluid inclusions, modern spring waters, and unaltered rocks of the area.The results indicate that a hydrothermal convection...
Tragic base surge in 1790 at Kilauea Volcano
Donald A. Swanson, Robert L. Christiansen
1973, Geology (1) 83-86
Reconstruction of events surrounding the deaths of a party of Hawaiian warriors in 1790 on Kilauea Volcano suggests that they were killed by a hot, relatively ash-free base surge. Recognition of structures attributable to base-surge deposition in deposits of the 1790 eruption is consistent with this reconstruction....
Fossil forms of Amentiferae
Jack A. Wolfe
1973, Brittonia (25) 334-355
Review of the procedures used in determining fossil plant organs indicates that the many Cretaceous records of extant genera of “Amentiferae” based on leaves should be rejected as theoretically unreliable. Palynological data, in combination with some valid megafossil data, indicate that most recognizable members of “Amentiferae” are no older than...
Oxidation during magmatic differentiation, Finnmarka Complex, Oslo area, Norway: Part 2, the mafic silicates
Gerald K. Czamanske, David R. Wones
1973, Journal of Petrology (14) 349-380
Electron-microprobe analyses are presented for pyroxene, amphibole, and biotite from monzonite, granodiorite, and granite at Finnmarka, Norway. Compositional trends measured in biotite, present in all three rock types, and in amphibole, present in the monzonite and granodiorite, are markedly atypical and are interpreted as reflecting crystallization under progressively more...
Bidding and production relationships for federal OCS leases: Statistical studies of wildcat leases, Gulf of Mexico, 1962, and prior sales
John Lohrenz, Hillary A. Oden
1973, Conference Paper
The relationships between bids received on wildcat leases issued on federal OCS lands in the Gulf of Mexico from 1954 through 1962 and subsequent drilling on, production from, and relinquishment of these leases were studied. The results provided quantitative answers to questions regarding bidding as prescribed by current laws and...
Shallow structure and geologic development of the Southern Red Sea
David A. Ross, John Schlee
1973, GSA Bulletin (84) 3827-3848
A series of 34 shallow-penetration seismic-reflection profiles made across the Red Sea show that it developed in two main stages. Initially, an early or pre-Miocene uplift and lateral extension resulted in crustal thinning and eventual formation of the main Red Sea Basin. During Miocene time, the Red Sea was isolated...
Surface jet stream excess temperature analysis
Daniel P. Bauer, Louis H. Motz
1973, Report
No abstract available....
Glauconites from New Jersey-Maryland coastal plain: Their K-Ar ages and application in stratigraphic studies
James P. Owens, Norman F. Sohl
1973, Geological Society of America Bulletin (84) 2811-2838
Glauconite samples from various stratigraphic levels in the northern Atlantic Coastal Plain were dated by the K-Ar method. Twenty-eight samples were collected from glauconite-bearing sands in four traverses across the outcrop belt of Upper Cretaceous–lower Tertiary formations from northern New Jersey to eastern Maryland, thus providing a framework on which...
Regional gravity anomalies and crustal structure in northern Colombia
J. E. Case, W.D. MacDonald
1973, Geological Society of America Bulletin (84) 2905-2916
The central range of the Colombian Andes gives way northward to a series of Cenozoic fault-bordered basins and uplifts near the Caribbean Sea. Pre-Cenozoic structures exposed in the uplifts curve increasingly toward the east to become parallel to the continental margins along the south side of the Caribbean. Major Cenozoic...
Tests of rhodamine WT dye for toxicity to oysters and fish
Garald G. Parker Jr.
1973, Journal of Research of the U.S. Geological Survey (1) 499-499
Because of the toxicity to oyster larvae and eggs of rhodamine B dye in concentrations greater than 1 mg/l in earlier tests, there was a concern that rhodamine WT, a similar tracer dye, would have a detrimental effect on marine life being developed under the aquaculture program of the Lummi...
Structure and development of the continental margin of British Honduras
William P. Dillon, John G. Vedder
1973, Geological Society of America Bulletin (84) 2713-2732
The continental margin of British Honduras is characterized by elongate ridges that are sub-parallel with the coast and that diverge slightly northward. Each ridge apparently is formed by aligned fault blocks composed of continental basement rock that rotated and subsided during rifting of the margin. The western part of the...
Eclogites from southwestern Oregon
Edward D. Ghent, Robert G. Coleman
1973, Geological Society of America Bulletin (84) 2471-2488
Eclogite, high-grade blueschist, and amphibolite blocks occur within the Mesozoic Otter Point Formation of southwestern Oregon and are inferred to have been tectonically emplaced by eastward-directed overthrusting involving Colebrooke Schist and serpentinite.Eclogite from southwestern Oregon is very similar in bulk chemistry and mineralogy to the well-studied eclogite of California.Calculations of...
Biotite as a source of some of the sulfur in porphyry copper deposits
Norman G. Banks
1973, Economic Geology (68) 697-703
No abstract available....
Alaska-Aleutian range batholith: Geochronology, chemistry, and relation to circum-Pacific plutonism
Bruce L. Reed, Marvin A. Lanphere
1973, GSA Bulletin (84) 2583-2610
Potassium-argon mineral ages and reconnaissance mapping of approximately 65,000 sq km in south-central Alaska indicate that the Mesozoic and Cenozoic plutonic rocks in the region were emplaced during three discrete intrusive epochs. Most of the plutonic rocks are part of the Alaska-Aleutian Range batholith; the remainder appear as outcrops in...
Bathymetry of the continental margin off Liberia, West Africa
John Schlee, James M. Robb, John C. Behrendt
1973, Journal of Research of the U.S. Geological Survey (1) 563-567
A bathymetric map based on new data allows examination of geomorphic features on the narrow continental margin off Liberia. The continental shelf in this region is relatively flat and featureless. The northwestern part of the continental slope, off Monrovia and Cape Mount, shows complex slump features and two submarine valleys. The central part of the...
Galkhaite, (Hg,Cu,Tl,Zn) (As,Sb)S2, from the Getchell mine, Humboldt County, Nevada
Theodore Botinelly, George J. Neuerburg, Nancy M. Conklin
1973, Journal of Research of the U.S. Geological Survey (1) 515-517
The first reported occurrence in the United States of galkhaite (Hg,Cu,Tl,Zn)(As,Sb)S2 is at the Getchell mine, Humboldt County, Nev. The mineral occurs as brownish-black cubes associated with graphite, pyrite, and realgar. In polished section galkhaite is grayish white and isotropic with a deep-red internal reflection; reflectivity at 590 nm is 21.6 percent. Spectrographic analysis gave...
The enthalpies of formation of nesquehonite, MgCO3 * 3H2O, and hydromagnesite, 5MgO * 4CO2 * 5H2O
Bruce S. Hemingway, Richard A. Robie
1973, Journal of Research of the U.S. Geological Survey (1) 543-547
The enthalpies of formation, ΔH°f, of nesquehonite, MgCO3 * 3H2O, and hydromagnesite, 5MgO * 4CO2 * 5H2O, have been determined by HCl solution calorimetry. For the reaction MgO(c) + CO2(g) + 3H2O(l) = MgCO2 * 3H2O(c), the enthalpy change at 298.15 K is -29,781*40 cal mor' . For the reaction 5MgO(c) +...
Remote sensing of turbidity plumes in Lake Ontario
E.J. Pluhowski
1973, Journal of Research of the U.S. Geological Survey (1) 609-614
High-altitude photography provides an effective method of monitoring the spatial extent of turbidity plumes in Lake Ontario. Large plumes generated by the Niagara, Genesee, and Oswego Rivers are identifiable on photographs obtained from about 60,000 feet above the lake on July 6, 1970, October 19, 1970, and May 29, 1971. The Niagara plume, covering as...
Aquifer diffusivity of the Ohio River alluvial aquifer by the flood-wave response method
Harold H. Zehner, Hayes F. Grubb
1973, Journal of Research of the U.S. Geological Survey (1) 597-601
Aquifer diffusivity (T/S) was calculated for 10 sites in the alluvial aquifer adjacent to the Ohio River by observing the response of the aquifer to a flood wave in the river. The calculated type curves matched the observed aquifer response reasonably well at eight of the 10 sites. The diffusivities ranged from 0.4 ft2...
Method for estimating the diversion potential of streams in eastern Massachusetts and southern Rhode Island
Gary D. Tasker
1973, Journal of Research of the U.S. Geological Survey (1) 615-619
A simple method is proposed for estimating the probable magnitude and frequency of streamflow that is in excess of predetermined minimum streamflows required downstream in eastern Massachusetts and southern Rhode Island. Regional curves relate these annual volumes of streamflow excess to the average annual discharge and the median 7-day annual minimum flow of the site....
