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Articles 3901 - 3930 of 3974
Full-Text Articles in Entire DC Network
A Petrographic Study Of The Eocene Jackson Group Of Mississippi And Adjacent Areas., Ming-Shan Sun
A Petrographic Study Of The Eocene Jackson Group Of Mississippi And Adjacent Areas., Ming-Shan Sun
LSU Historical Dissertations and Theses
No abstract provided.
The Christensen Sillimanite Deposit Southeast Of Dillon, Montana, Everett O. Bracken
The Christensen Sillimanite Deposit Southeast Of Dillon, Montana, Everett O. Bracken
Bachelors Theses and Reports, 1928 - 1970
The minerals sillimanite, kyanite, andalusite, dumortierite, and topaz comprise a group of minerals whose high alumina content and physical properties are particularly desirable in the manufacture of refractory products. Sillimanite is the least plentiful of the minerals of this group, and for this reason it is not used extensively at the present time. However, it would be very desirable to the refractory industry if a suitable domestic source of supply could be established.
An Isopach Map And Discussion Of Triassic Strata In Southern Montana And Wyoming, Robert G. Thompson
An Isopach Map And Discussion Of Triassic Strata In Southern Montana And Wyoming, Robert G. Thompson
Bachelors Theses and Reports, 1928 - 1970
Oil and gas have been found in the Triassic strata of Wyoming. Although the Triassic has not as yet proven to be a large producing horizon it is very probable that additional oil will be found in Triassic strata in the future, and it is one of the goals at which oil well drillers aim their tools.
The Frost-Moved Rubbles Of Jumbo Dome And Their Significance In The Pleistocene Chronology Of Alaska, Clyde Wahrhaftig
The Frost-Moved Rubbles Of Jumbo Dome And Their Significance In The Pleistocene Chronology Of Alaska, Clyde Wahrhaftig
United States Geological Survey: Staff Publications
Jumbo Dome, a prominent landmark on the north side of the Alaska Range, is a small body of intrusive andesite surrounded by schist and by poorly consolidated sediments of Tertiary age. Frost-moved rubbles, consisting of coarse andesite blocks, almost completely mantlethe dome and have advanced outward from it across a gently sloping terrain for distances as much as 1 ¼ miles. Several different periods of rubble development are recognized, based on the amount of vegetal covering of the deposits, the preservation of their surface forms, and their degree of erosion by fluvial processes. The rubbles are not now moving and …
Preliminary Report On The Geology Of Colgrove Butte, Hettinger County, North Dakota, Thorsteinn Thorsteinsson
Preliminary Report On The Geology Of Colgrove Butte, Hettinger County, North Dakota, Thorsteinn Thorsteinsson
Theses and Dissertations
Colgrove Butte is a flat-topped erosional remnant with a cap of rock area of approximately 0.845 square miles, rising about 200 feet above the surrounding Missouri Plateau in northwestern Hettinger County, North Dakota. Its upper portion consists of flat lying fresh water deposits of White River (Oligocene) age, containing beds of hard limestone, marls, argillaceous limestones, calcareous clays, clays and sands. It is everywhere covered by a mantle of top soil 6 inches to 3 feet 6 inches thick. Below this topsoil, extending over approximately two-thirds of the caprock area of the butte, is a bed of hard limestone averaging …
Geology And Ore Deposits Of The Salt Chuck-Rush And Brown Mine Area Prince Of Wales Island, Alaska, Judson H. Whitman
Geology And Ore Deposits Of The Salt Chuck-Rush And Brown Mine Area Prince Of Wales Island, Alaska, Judson H. Whitman
Bachelors Theses and Reports, 1928 - 1970
The Salt Chuck, Rush and Brown, and adjacent mines and claims form an area of approximately 15 square miles near the head of Kasaan Bay about 10 miles northwest of the village of Kasaan on Prince of Wales Island in southeastern Alaska. It is an area of moderate relief in which the hills rise from the water’s edge to heights of some 500 feet. Most of the area is covered with dense vegetation and muskeg.
A Discussion Of The Geology And An Isopach Map Of The Pennsylvanian System In Wyoming And Adjacent Areas, B. R. Alto
A Discussion Of The Geology And An Isopach Map Of The Pennsylvanian System In Wyoming And Adjacent Areas, B. R. Alto
Bachelors Theses and Reports, 1928 - 1970
Pennsylvanian strata in Wyoming and adjacent areas have been the subject of much work and discussion. Most of the work has been due to the economic importance of the system as an oil producer in this region. Oil production from strata of Pennsylvanian age is rather recent history; and therefore, much of the available information is localized and incomplete.
An Isopach Map And A Discussion Of The Permian In Wyoming And Adjacent Areas, Willard Leskela
An Isopach Map And A Discussion Of The Permian In Wyoming And Adjacent Areas, Willard Leskela
Bachelors Theses and Reports, 1928 - 1970
The accelerated post-war demand for petroleum products with resultant high prices and dwindling reserves has spurred producers to an extensive search for new fields and for additional production in known fields. Exploration and discovery is dependent on the collection and correlation of vast amounts of data both in the field and that found in literature.
Geology Of The Lost Creek-Modesty Creek Area Deerlodge County, Montana, Howard B. Nickelson, Robert L. Pott
Geology Of The Lost Creek-Modesty Creek Area Deerlodge County, Montana, Howard B. Nickelson, Robert L. Pott
Bachelors Theses and Reports, 1928 - 1970
In 1915 the United States Geological Survey published a folio by Calkins and Emmons on the geology of the Philipsburg Quadrangle, which adjoins the area now under study to the west. Geology of this portion of Montana had not been mapped previously; consequently the purpose of this thesis is to make a geological reconnaissance of the stratigraphy and structure of the area.
Geological Studies In Utah, J. Stewart Williams
Geological Studies In Utah, J. Stewart Williams
Faculty Honor Lectures
Utah's thousands of square miles of mountains, plateaus, and i ~ desert basins exhibit a wide variety of geological features and offer the student of geology an endless series of challenging problems. The solution of some of these problems began nearly one hundred years ago with the surveys of the United States territories; the work continues today at a greatly accelerated rate with scores of professional geologists and advanced students in the field each summer. The writer and students under his direction have made some contributions to the solution of a few of these problems in the twelve years that …
Petrology Of The Upper Marietta And Hundred Sandstones In Southeastern Ohio, Wayne Dudley Martin
Petrology Of The Upper Marietta And Hundred Sandstones In Southeastern Ohio, Wayne Dudley Martin
Graduate Theses, Dissertations, and Problem Reports (ETD)
A petrographic study was made of two Lower Permian (Dunkard Series) sandstones in southeastern Ohio. The sandstone members with which the investigation was concerned are the Upper Marietta sandstone and the Hundred sandstone. The study was made in order to determine the origin of the sandstones and the practicability of applying geologic methods to the grindstone industry. The results of the study indicate that although some of the constituents of these sandstones were derived from igneous and sedimentary source rocks, a relatively large amount of material was derived from metamorphic rocks. The detritus was transported from the east and deposited …
Geology Of The Berryman Area, Washington County, Missouri, Jack Alexander James
Geology Of The Berryman Area, Washington County, Missouri, Jack Alexander James
Masters Theses
"Purpose and scope - The are discussed in this thesis was selected because of recent exploration for lead within this region and because of the need for more detailed information of the structure and geologic history of the area. The work constitutes part of a program of geologic mapping by the Missouri Geological Survey and Water Resources to complete the mapping of a strip of quadrangles extending across the Ozark Uplift from Rolla eastward to the Mississippi River"--Introduction, page 1.
Mayflower, Renova Basin, And South Boulder Creek Areas, Howard Nickelson
Mayflower, Renova Basin, And South Boulder Creek Areas, Howard Nickelson
Bachelors Theses and Reports, 1928 - 1970
In Montana at the turn of the century a great many men sought the riches buried in the earth's crust. Prospectors fanning out from Butte and other early Montana mining areas located veins at the Mayflower, Renova, and Gold Hill areas.
The Post-Kansan Geologic History Of The Lower Platte Valley Area, Gilbert Carl Lueninghoener
The Post-Kansan Geologic History Of The Lower Platte Valley Area, Gilbert Carl Lueninghoener
University Studies (University of Nebraska) (1888–1984)
This investigation is essentially a geomorphological study of the lower Platte River Valley area in eastern Nebraska. The area comprises Saunders, Dodge, Washington, Douglas, Sarpy, and Cass counties. The area defined above is one of the most critically located of any for the study of the post-Kansan history of the lower Platte River Valley. It lies between the older till (Nebraskan and Kansan) borders to the west and the younger till (Illinoian, Iowan, and Wisconsin) borders to the east. Physiographic changes have therefore transpired in a strictly post-Kansan periglacial region. The Kansan till is the youngest in the area. The …
Kibbey Sandstone In Montana, Glen Shean
Kibbey Sandstone In Montana, Glen Shean
Bachelors Theses and Reports, 1928 - 1970
Much attention has recently been given, by geologists, to prolific water bearing horizon and a potential oil horizon, known as the Kibbey sandstone, which lies deeply buried under much of central Montana. In some localities the sandstone is dry, and its identification in cuttings from deep wells has in many cases proved difficult.
Geology Of A Kyanite Deposit Near Ennis, Montana, Clarence L. Nordstrom
Geology Of A Kyanite Deposit Near Ennis, Montana, Clarence L. Nordstrom
Bachelors Theses and Reports, 1928 - 1970
A deposit of kyanite, an aluminum silicate mineral used in the ceramic industry, occurs in the low foothills of the Gravelly range about 10 miles south of Ennis, Montana. This study deals primarily with the character and origin of the deposit, and its relationship to the surrounding rocks.
Plan Of Development For Valley Gravity Project, Julius A. Krug, Michael W. Straus, Wesley R. Nelson
Plan Of Development For Valley Gravity Project, Julius A. Krug, Michael W. Straus, Wesley R. Nelson
Lower Rio Grande Valley Curated Material
"The Valley Gravity Project Plan has been formulated to furnish an adequate and dependable irrigation water supply for fertile and productive area in the Lower Rio Grande Valley, Texas, It would also provide drainage works, which would remove the threat of destruction of the economy of the area due to effects of a high water table and salt accumulations. The project works would permit generation of the maximum practicable amount of electrical energy which otherwise would be required to operate irrigation pumping plants. Other incidental benefits include fish and wildlife conservation, recreation and flood control."
Project report no. 5-0619-0
Fluorite Near Silver Bow, Montana, Charles V. Campbell
Fluorite Near Silver Bow, Montana, Charles V. Campbell
Bachelors Theses and Reports, 1928 - 1970
The wartime demand for fluorspar has caused renewed interest in fluorite deposits. Near Silver Bow, Montana, a deposit of massive, coarsely crystalline fluorspar, which has not been described in the literature, has attracted the attention of the United States Geological Survey.
An Isopach Map And Discussion Of The Marine Jurassic Of Western United Sates And Canada, John H. Ferry
An Isopach Map And Discussion Of The Marine Jurassic Of Western United Sates And Canada, John H. Ferry
Bachelors Theses and Reports, 1928 - 1970
Recent demands for petroleum to carry on the war effort have resulted in widespread prospecting in the northern Great Plains. Nearly all oil wells now drilled are of a depth to penetrate the marine Jurassic formations. It is known that these strata differ in thickness from place to place, but information of distribution, thickness, and lithology has not yet been compiled.
Geology Of Webster Parish., James Littell Martin
Geology Of Webster Parish., James Littell Martin
LSU Historical Dissertations and Theses
No abstract provided.
Geology And Occurence Of Graphite At The Crystal Graphite Mine Near Dillon, Montana, Charles K.W. Hum Hum
Geology And Occurence Of Graphite At The Crystal Graphite Mine Near Dillon, Montana, Charles K.W. Hum Hum
Bachelors Theses and Reports, 1928 - 1970
The problem to be considered embraces the mineralogy and the mode of formation of a very pure and vein-like deposit of crystalline graphite. This deposit is of more than ordinary interest because in its geological relations and in the character of its graphite it shows many similarities to the famous deposits of Ceylon.
The Physiography Of Beauregard And Allen Parishes., Wilbur Charles Holland
The Physiography Of Beauregard And Allen Parishes., Wilbur Charles Holland
LSU Historical Dissertations and Theses
No abstract provided.
A Review Of The Daimonelix Problem, C. Bertrand Schultz
A Review Of The Daimonelix Problem, C. Bertrand Schultz
University Studies (University of Nebraska) (1888–1984)
THE first paleontological expedition of the University of Nebraska State Museum was organized in the summer of 1891 and was led by Erwin H. Barbour, now Director Emeritus of the Museum. The most important and interesting discoveries made during the season were some very peculiar spiral fossils called by the field party "Devil's Corkscrews," or Daimonelix,l which were found in the Miocene deposits near Harrison in Sioux County, Nebraska. During the fifty years that have intervened scientists have tried to determine the origin of these strange forms. Several controversies arose, and although various theories have been proposed, none as yet …
The Geology Of The Claiborne (Eocene) Group Of Mississippi As Far North As Grenada County., Emil Paul Thomas
The Geology Of The Claiborne (Eocene) Group Of Mississippi As Far North As Grenada County., Emil Paul Thomas
LSU Historical Dissertations and Theses
No abstract provided.
Geology Of Desoto And Red River Parishes, Louisiana., Grover E. Murray
Geology Of Desoto And Red River Parishes, Louisiana., Grover E. Murray
LSU Historical Dissertations and Theses
No abstract provided.
The Magnesium Content Of The Rocks Of The Upper Cretaceous System Of Ellis And Osborne Counties, Kansas, Robert Funston
The Magnesium Content Of The Rocks Of The Upper Cretaceous System Of Ellis And Osborne Counties, Kansas, Robert Funston
Master's Theses or Doctor of Nursing Practice
The recent impetus given industry by the national defense emergency has made everyone more or less conscious of the great importance of minerals. During the past few years some of the industrial leaders of Kansas have been attempting to promote the natural resources of the state. Some minerals once considered of little or no value are now being developed. For many years the limestone rocks of Western Kansas have been used for building purposes. Until recently little work has been done on the chemical composition of these rocks. The author has decided to continue the study by analyzing the rocks …
Cambrian Stratigraphy In The Northern Wasatch Region, George Burke Maxey
Cambrian Stratigraphy In The Northern Wasatch Region, George Burke Maxey
All Graduate Theses and Dissertations, Spring 1920 to Summer 2023
An exhaustive field study of the Cambrian stratigraphy of the northern Wasatch region indicates that in addition to the Blacksmith Fork section there are two complete and better exposed middle and upper sections. Several other good exposures of the lower Middle Cambrian section have been studied in detail. The Spence shale is found to be a member low in the Langston, not the basal member of the Ute. Relative ages of the Spence shale and Ptarmigania faunas have been determined. Other Cambrian faunal zones have been discovered and are discussed. Paleontologic evidence suggests that the Nounan formation is of Upper …
The Pipy Concretions Of The Arikaree, C. Bertrand Schultz
The Pipy Concretions Of The Arikaree, C. Bertrand Schultz
Bulletin of the University of Nebraska State Museum (1924–2023)
The pipy concretions of the Arikaree (lower Miocene) of Nebraska and adjacent states were first described by Nelson Horatio Darton (1899, p. 743) as "characteristic layers of hard, fine-grained, dark-gray concretions, often consisting of aggregations of long, irregular, cylindrical masses" (see Figures 30, 32, 34, and 35). The individual pipes vary in diameter from a few inches to several feet, and in length from a few inches to a hundred yards or more. Tests demonstrate that pipy concretions are composed of sand cemented by calcium carbonate. When dipped in acid the cement is dissolved and the concretion is reduced to …
Geology Of Holmes And Washington Counties, Florida., Robert O. Vernon
Geology Of Holmes And Washington Counties, Florida., Robert O. Vernon
LSU Historical Dissertations and Theses
No abstract provided.
Geology Of The Golden Sunlight Mine And Vicinity, Roy H. Earhart
Geology Of The Golden Sunlight Mine And Vicinity, Roy H. Earhart
Bachelors Theses and Reports, 1928 - 1970
The Golden Sunlight Mine is in the northern part of the Cardwell mining district on the eastern slope of a small range that rises by a series of benches to an elevation of 7,200 at a point five miles east of the town of Whitehall in Jefferson County.