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Page 5983, results 149551 - 149575

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Miocene floras from Fingerrock Wash, southwestern Nevada
Jack A. Wolfe
1964, Professional Paper 454-N
Two floras of Miocene age, the Fingerrock and Stewart Spring, are found in a stratigraphic section that also contains fossil mammals. The Fingerrock flora occurs in beds below the Stewart Spring local fauna of transitional Hemingfordian-Barstovian (middle-late Miocene) age, and the Stewart Spring flora occurs above that fauna but below...
Methods of determining permeability, transmissibility and drawdown
Ray Bentall
1964, Water Supply Paper 1536-I
If the Theis graphical method is used for determining the hydraulic constants of an aquifer under water-table conditions, the observed drawdowns should be corrected for the decrease in saturated thickness. This is especially true if the drawdown is a large fraction of the original saturated thickness, for then the computed...
Ground-water resources of Waupaca County, Wisconsin
Charles F. Berkstresser
1964, Water Supply Paper 1669-U
Waupaca County is in east-central Wisconsin. No serious ground-water problems existed in 1960 except in a few localities where crystalline rock is near land surface or is covered by nearly impermeable till. The use of ground water for irrigation has not appreciably affected ground-water levels. The county is covered by Pleistocene...
Giant Upper Cretaceous oysters from the Gulf coast and Caribbean
Norman F. Sohl, Erle G. Kauffman
1964, Professional Paper 483-H
Two unusually massive ostreid species, representing the largest and youngest Mesozoic members of their respective lineages, occur in Upper Cretaceous sediment of the gulf coast and Caribbean areas. Their characteristics and significance, as well as the morphologic terminology of ostreids in general, are discussed. Crassostrea cusseta Sohl and Kauffman n. sp....
Ground-water provinces of southern Rhodesia
Philip Eldon Dennis, L.L. Hindson
1964, Water Supply Paper 1757-D
Ground-water development, utilization, and occurrence in nine ground-water provinces of Southern Rhodesia are summarized in this report. Water obtained from drilled wells for domestic and stock use has played an important part in the social and economic development of Southern Rhodesia from the beginnings of European settlement to the present....
Availability of ground water in parts of the Acoma and Laguna Indian Reservations, New Mexico
George A. Dinwiddie, Ward Sundt Motts
1964, Water Supply Paper 1576-E
The need for additional water has increased in recent years on the Acoma and Laguna Indian Reservations in west-central New Mexico because the population and per capita use of water have increased; the tribes also desire water for light industry, for more modern schools, and to increase their irrigation program....
Geology and ground-water resources of Richardson County, Nebraska
Philip A. Emery
1964, Water Supply Paper 1779-W
Richardson County is in the extreme southeast corner of Nebraska. It has an area of 545 square miles, and in 1960 it had a population of 13,903. The county is in the physiographic region referred to as the Dissected Loess-covered Till Prairies. Major drainage consists of the Big Nemaha River,...
Determination of ammonium citrate-soluble cobalt in soils and sediments
Frank Cogswell Canney, G.A. Nowlan
1964, Open-File Report 64-30
A rapid field method for the determination of cold-extractable cobalt in soils and sediments has been developed for use in geochemical prospecting. Readily available cobalt is dissolved by treating the sample with an aqueous ammonium citrate-hydroxylamine hydrochloride solution; the filtered citrate extract is then treated with 2-nitroso1-naphthol to form a...