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Articles 57901 - 57930 of 59502
Full-Text Articles in Entire DC Network
Surficial Geology Of The Southern Half Of Griggs County, North Dakota, James C. Merritt
Surficial Geology Of The Southern Half Of Griggs County, North Dakota, James C. Merritt
Theses and Dissertations
The southern half of Griggs County, in east-central North Dakota, lies entirely within the Young Drift section of the Central Lowlands physiographic province and is characterized by its undulating surface and nonintegrated drainage. The Kensel, Cooperstown, and Luverne phase of a Late Wisconsinan glaciation are largely responsible for the present appearance of the surface. The tills deposited during glacial stillstands cannot yet be differentiated by texture or X-ray diffreaction analyses, but the average shale pebble content of Kensel till is 16% higher than Cooperstown till.
Synthesis of Pleistocene history is based on the distribution of lithostratigraphic units and glacial geomorphic …
Jurassic Stratigraphy Of The Southern Two-Thirds Of North Dakota, Richard A. Salisbury
Jurassic Stratigraphy Of The Southern Two-Thirds Of North Dakota, Richard A. Salisbury
Theses and Dissertations
Jurassic rocks in the southern two-thirds of North Dakota consist mainly of limestone, shale, anhydrite, and salt of the Piper Formation; shaly limestone, calcareous and non-calcareous shales of the Rierden Formation; shale and sandstone of the Swift Formation; and, at the top, non-marine shale and local sandstones of the Morrison Formation.
The units generally are conformable in the deep part of the Williston Basin, and are unconformable near the edge of the basin in eastern North Dakota. The Poe Member of the Piper Formation, however, unconformably overlies the Spearfish Formation in the western part of North Dakota where Dunham salt …
The Stratigraphy Of The Sperati Point Quadrangle, Mckenzie County, North Dakota, Michael B. Clark
The Stratigraphy Of The Sperati Point Quadrangle, Mckenzie County, North Dakota, Michael B. Clark
Theses and Dissertations
The Sperati Point Quadrangle is in McKenzie County, northwestern North Dakota, about 30 miles south-southwest of Watford City, North Dakota. The quadrangle is bounded by Ts. 146-148 N., Rs. 100- 101 W., and encompasses an area of about: 54 square miles. The topography consists of weakly dissected upland plains and, adjacent to the Little Missouri River and tributaries, well dissected, well drained, badland areas characterized by extensive slumping. About 570 feet of the Sentinel Butte Member of the Tongue River Formation of Paleocene age is exposed in the quadrangle. The lower 200 to 250 feet is dominantly grayish, fine to …
Geology Of Copper-Lead-Zinc-Turquoise Deposits, Southern Part Of The Cerrillos Mining District, Santa Fe County, New Mexico, William G. Gustafson
Geology Of Copper-Lead-Zinc-Turquoise Deposits, Southern Part Of The Cerrillos Mining District, Santa Fe County, New Mexico, William G. Gustafson
Earth and Planetary Sciences ETDs
ABSTRACT
The southern part of the Cerrillos mining district is underlain by a sequence of igneous rocks which have been altered and mineralized. The rocks are intrusive equivalents of the Oligocene (?) Espinaso Volcanics. Four stages of intrusion are recognized. A hornblende monzonite porphyry stock was emplaced during stage T1. Several small hornblendeaugite monzonite stocks intruded stage T1 rocks during stagesT2 and T3. During stage T4, stocks of augite-biotite monzonite, hornblende-biotite monzonite porphyry, and andesineaugite-biotite monzonite porphyry were intruded into the older igneous rocks. The stage T1, T2, and T3 stocks are flanked by sills and laccoliths.
Three sets of …
Biochemical Activity, Walter A. Lawrance
L.A. General Data, Walter A. Lawrance
Analytical Data, Walter A. Lawrance
Mill Pollution, Walter A. Lawrance
Press Reports, Walter A. Lawrance
Pool Studies, Walter A. Lawrance
Relationships Oct-Nov 1965 Observation Well Measurements To Median Observed Ground Water Levels, E. C. Reed
Relationships Oct-Nov 1965 Observation Well Measurements To Median Observed Ground Water Levels, E. C. Reed
Conservation and Survey Division: Faculty and Staff Publications
No abstract provided.
1964 Drought In Connecticut, The, Byron E. Janes, Joseph J. Brumbach
1964 Drought In Connecticut, The, Byron E. Janes, Joseph J. Brumbach
Storrs Agricultural Experiment Station
No abstract provided.
Water Chemistry Survey Of Boulder Basin, Lake Mead, P. R. Tramutt, Bureau Of Reclamation
Water Chemistry Survey Of Boulder Basin, Lake Mead, P. R. Tramutt, Bureau Of Reclamation
Publications (WR)
The survey results indicate that the impoundment of water behind Hoover Dam has not adversely affected the dissolved oxygen (DO) content and that water quality and DO content were uniform regardless of depth. The study made in April-May 1964 will provide water quality data of Lake Mead prior to releases from Lake Powell as a basis for evaluating Lake Powell's effect on water quality and limnology of Lake Mead. The performance of a DO analyzer was tested and found unsatisfactory at depths below 150 ft. Parameters tested by standard chemical analyses of water samples in the Denver Laboratory and by …
Conodonts Of The Mississippian System In The Sacramento Mountains, New Mexico, Robert C. Burton
Conodonts Of The Mississippian System In The Sacramento Mountains, New Mexico, Robert C. Burton
Earth and Planetary Sciences ETDs
Each formation of the Mississippian System in the Sacramento Mountains of New Mexico yields conodonts. Six distinctive conodont assemblages are recognized. The lowest assemblage coincides with the Caballero Formation (Kinderhook). Three distinct assemblages occur in the Lake Valley Formation (Osage). The Rancheria Formation (Meramec) and the Helms Formation (Meramec and Chester) also yield distinctive faunas. The assemblages correlate locally, regionally, and interregionally. The limestones and interbedded shales of the entire stratigraphic sequence were sampled continuously. The shale sequences were barren. The limestones yielded large, diversified, indigenous faunas. The lower part of the Lake Valley Formation contains Kinderhook and Osage species …
Paleozic Stratigraphy Of The James Peak Quadrangle, Utah, Harley D. King
Paleozic Stratigraphy Of The James Peak Quadrangle, Utah, Harley D. King
All Graduate Theses and Dissertations, Spring 1920 to Summer 2023
General Statement
The James Peak quadrangle is a topographic map unit of the Geological Survey of the U. S. Department of Interior (Plate 1). It covers 7 1/2 minutes of latitude and longitude at a scale of 1:24, 000 or 1 inch to 2, 000 feet. It is bounded by lat 41°22'30" N. and lat 41°30' N. and long 111°45' W. and long 111 °52 '30" W The quadrangle includes 56 square miles and has maximum relief of about 4, 300 feet.
The James Peak quadrangle is located in northern Utah between the Wasatch Range on the west and the …
Geology Of The Monte Cristo Area, Bear River Range, Utah, Robert B. Smith
Geology Of The Monte Cristo Area, Bear River Range, Utah, Robert B. Smith
All Graduate Theses and Dissertations, Spring 1920 to Summer 2023
The Monte Cristo area is a 7 1/2-minute quadrangle located in the southeastern. part of the Bear River Range, northern Utah. It is within the Middle Rocky Mountain province and is 10 miles east of the Basin and Range province. Previous to this investigation little was known about the detailed geology of the area except for a reconnaissance study and general geologic map of the Cache County part included in the Geologic Atlas of Utah, Cache County, published by Williams (1958).
The purposes of this investigation were as follows: (1) to determine the formations present in the area and their …
Effect Of Calcium Availability On Alfalfa Grown In Calcareous High Sodium Soils, Harry Irving Nightingale
Effect Of Calcium Availability On Alfalfa Grown In Calcareous High Sodium Soils, Harry Irving Nightingale
All Graduate Theses and Dissertations, Spring 1920 to Summer 2023
In soil science we shall always be confronted with reactions in soils that involve Ca. Early recognition of this led to experimentation in this area. Due to the fact that Ca deficiency is most common in acid soils, the majority of the experimentation has in the past been largely confined to acid soils and their soil-Ca-plant relationships. There has been relatively little research done with Ca and its availability problems associated with alkaline or sodic soils.
Water Levels In Observation Wells In Nebraska, 1964, Philip A. Emery, Mildred M. Malhoit
Water Levels In Observation Wells In Nebraska, 1964, Philip A. Emery, Mildred M. Malhoit
Conservation and Survey Division: Faculty and Staff Publications
No abstract provided.
A Detailed Economic Investigation Of Geochemical And Aeromagnetic Anomalies North Central Maine, W. F. Stickney, R. S. Young, L. A. Wing
A Detailed Economic Investigation Of Geochemical And Aeromagnetic Anomalies North Central Maine, W. F. Stickney, R. S. Young, L. A. Wing
Maine Collection
A Detailed Economic Investigation of Geochemical and Aeromagnetic Anomalies North Central Maine
W.F.Stickney, R.S.Young and L.A.Wing
Special Economic Series No.4, Maine Geological Survey, Department of Economic Development, Augusta, Maine (March 1965).
Contents: Foreword / Part I - Geology (W.F. Stickney) / Part II - Geophysics (R.S. Young) / Part III - Geochemistry (L.A. Wing) / References
Base-Level Control Of Erosion Surfaces, H. F. Garner
Base-Level Control Of Erosion Surfaces, H. F. Garner
Journal of the Arkansas Academy of Science
No abstract provided.
Monadnocks, Divides And Ozark Physiography, James Harrison Quinn
Monadnocks, Divides And Ozark Physiography, James Harrison Quinn
Journal of the Arkansas Academy of Science
No abstract provided.
Report On Some Iron And Nickel Minerals From The Soapstone Deposits Of Saline County, Arkansas, Phillip Wicklein, Alden B. Carpenter
Report On Some Iron And Nickel Minerals From The Soapstone Deposits Of Saline County, Arkansas, Phillip Wicklein, Alden B. Carpenter
Journal of the Arkansas Academy of Science
No abstract provided.
Structural And Petrological Note On The Mazarn Synclinorium, Larry J. Lee
Structural And Petrological Note On The Mazarn Synclinorium, Larry J. Lee
Journal of the Arkansas Academy of Science
No abstract provided.
Shale-Limestone Alteration In The Upper Portion Of The Fayetteville Formation Near Marshall, Arkansas, W. Bruce Saunders
Shale-Limestone Alteration In The Upper Portion Of The Fayetteville Formation Near Marshall, Arkansas, W. Bruce Saunders
Journal of the Arkansas Academy of Science
No abstract provided.
Paleozoic Analogues Of Recent Carbonates, Tom Freeman
Paleozoic Analogues Of Recent Carbonates, Tom Freeman
Journal of the Arkansas Academy of Science
No abstract provided.
Precambrian Geology In Humboldt Township, Marquette County, Michigan, Peter D. Rowley
Precambrian Geology In Humboldt Township, Marquette County, Michigan, Peter D. Rowley
Journal of the Minnesota Academy of Science
ABSTRACT-The present study involved investigation of gneissic granite, migmatite, basic dikes, and faults in part of the Southern Complex of Michig.an. The average strike of the foliation of the gneissic granite based upon the orientation of feldspar phenocrysts is N. 60° w·;, the strike of the major dike set is between N. 30° W. and N. 60° W., the average strike of the fault zones-is N. 52° W., and a two-mile long body of migmatite trends about N. 57° W. The known history starts in the early Precambrian, when gneissic granite was emplaced and formed migmatites by incorporation of wall-rock …
Marine Geology, Preston E. Cloud Jr.
Marine Geology, Preston E. Cloud Jr.
Journal of the Minnesota Academy of Science
Were the average temperature of the earth a few tens of degrees less than it is, ice would be the most common crustal rock. The fact that it occurs in its liquid phase over 71 per cent of the earth's surface should not obscure the fact that the oceans are geologic features, particularly in their substructure, their boundary relations, and their history.
Total Number Of Irrigation Wells Located In Nebraska Counties As Of 1965
Total Number Of Irrigation Wells Located In Nebraska Counties As Of 1965
Conservation and Survey Division: Faculty and Staff Publications
No abstract provided.
Miocene Mammals And Central American Seaways, Frank C. Whitmore Jr., Robert H. Stewart
Miocene Mammals And Central American Seaways, Frank C. Whitmore Jr., Robert H. Stewart
United States Geological Survey: Staff Publications
The fossil mammal faunas of North and South America indicate that the two continents were separated from Paleocene or earlier time until the late Pliocene. Unfortunately our almost complete ignorance of the Tertiary land mammals of Central America, the geology of this large area, makes reconstruction of the Tertiary zoogeography of the region between the continents an exercise involving considerable speculation.