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Articles 1261 - 1290 of 1555

Full-Text Articles in Stratigraphy

Stratigraphic Comparison Of The Precambrian Wyman And Johnnie Formations In The Western Great Basin, California, Johnnie Nathan Moore Jan 1973

Stratigraphic Comparison Of The Precambrian Wyman And Johnnie Formations In The Western Great Basin, California, Johnnie Nathan Moore

UNLV Theses, Dissertations, Professional Papers, and Capstones

The Precambrian Johnnie Formation in the Death Valley area and to the south is separable into two facies. The southern facies contains six distinct members: the transitional, quartzite, lower carbonate-bearing, siltstone, upper carbonate-bearing, and Rainstorm members. Dolomite, quartzite, and mudstone characterize the southern facies, as does the presence of the Johnnie oolite. To the north the Johnnie oolite pinches out and the amount of mudstone in the formation increases. The dominantly mudstone northern facies contains local gray limestone lenses closely similar to limestone in the Wyman Formation in the White-Inyo Mountains. Generally outcrops of the northern facies of the Johnnie …

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Epeirogenic And Climatic Controls Of Early Pleistocene Fluvial Sediment Dispersal In Nebraska, K. O. Stanley, William J. Wayne Dec 1972

Epeirogenic And Climatic Controls Of Early Pleistocene Fluvial Sediment Dispersal In Nebraska, K. O. Stanley, William J. Wayne

Department of Earth and Atmospheric Sciences: Faculty Publications

The change from Pliocene to Pleistocene fluvial sedimentation in Nebraska is denoted by gravel with relative enrichment of mechanically weak rock species and a two-fold increase in largest clast size. These changes in fluvial sediments suggest modification in degradational energy affecting detritus apparently related to deterioration of climate in the early Pleistocene. Cooler Pleistocene climates with increased moisture resulted in greater discharge and carrying capacity for streams headed in the Rocky Mountains and flowing across Nebraska. These streams carried granitic detritus eastward toward the continental glacier margin in easternmost Nebraska. There, streams flowing off ice sheets carrying sedimentary and metamorphic …

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The Geology Of The Pittsburg Landing Area, Snake River Canyon, Oregon-Idaho, David L. White Aug 1972

The Geology Of The Pittsburg Landing Area, Snake River Canyon, Oregon-Idaho, David L. White

All-Inclusive List of Electronic Theses and Dissertations

The major purpose of the study was to map, describe, and correlate the pre-Tertiary rocks. Accessible and excellent exposures at Pittsburg Landing enabled the writer to make a somewhat detailed study of the stratigraphy. The thesis area also offered an opportunity to study in a reconnaissance manner, the Tertiary Columbia River Basalt as described by Waters, and more recently y Ozier.

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Use Of Groundwater For Irrigation In Clay County, Nebraska, 1970, Eugene K. Steele Jr. May 1972

Use Of Groundwater For Irrigation In Clay County, Nebraska, 1970, Eugene K. Steele Jr.

Conservation and Survey Division: Faculty and Staff Publications

No abstract provided.

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Groundwater Levels In Nebraska, 1971, C.F. Keech May 1972

Groundwater Levels In Nebraska, 1971, C.F. Keech

Conservation and Survey Division: Faculty and Staff Publications

No abstract provided.

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Availability And Use Of Water In Nebraska, 1970, F. Butler Shaffer Mar 1972

Availability And Use Of Water In Nebraska, 1970, F. Butler Shaffer

Conservation and Survey Division: Faculty and Staff Publications

No abstract provided.

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Upper Pennsylvanian Shoreline Deposits Form Iowa And Nebraska: Their Recognition, Variation, And Significance, J. A. Fagerstrom, R. R. Burchett Feb 1972

Upper Pennsylvanian Shoreline Deposits Form Iowa And Nebraska: Their Recognition, Variation, And Significance, J. A. Fagerstrom, R. R. Burchett

Conservation and Survey Division: Faculty and Staff Publications

No abstract provided.

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Petrology Of The Nemeiben Lake Ultramafic And Associated Nickel-Sulphide Deposits, Anantaramam Peddada Jan 1972

Petrology Of The Nemeiben Lake Ultramafic And Associated Nickel-Sulphide Deposits, Anantaramam Peddada

Geology Theses and Dissertations

The Nemeiben Lake ultramafic body is located in the center of Saskatchewan, Canada, within the Churchill Province of the Canadian Shield. The ultramafic rocks consist of serpentinites, partly serpentinized and uralitized pyroxenite, and unaltered pyroxenite. Associated sulphide mineralization is of disseminated, net texture, and fracture filling types. The ore minerals present are pyrrhotite, pentlandite, chalcopyrite, pyrite, marcasite, violarite, bravoite and native copper. The sulphides are considered to be initially of magmatic origin formed from a sulphide melt separated at a late stage during crystallization of the ultramafic rocks. Subsequent serpentinization has locally redistributed the ores.
Serpentinization in the Nemeiben Lake …

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Total Number Of Irrigation Wells Located In Nebraska Counties As Of 1972 Jan 1972

Total Number Of Irrigation Wells Located In Nebraska Counties As Of 1972

Conservation and Survey Division: Faculty and Staff Publications

No abstract provided.

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Stratigraphy And Sedimentary Structures Of A Middle Bloyd Fluvial Sandstone, Washington And Madison Counties, Arkansas, John M. Glenn Jan 1972

Stratigraphy And Sedimentary Structures Of A Middle Bloyd Fluvial Sandstone, Washington And Madison Counties, Arkansas, John M. Glenn

Journal of the Arkansas Academy of Science

A prominent quartz-pebble-bearing sandstone unit crops out at stream level along the East Fork of the White River in Madison County. Detailed geologic mapping indicates that the unit is stratigraphically positioned between the Brentwood and Dye Shale Members of the Bloyd Formation and is not the Greenland Member of the Winslow Fromation as previously supposed. Sedimentary textures and structures of the unit indicate that it was deposited by competent, unidirectional currents flowing in a southerly direction. These currents were related to a broad braided stream system.

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Statewide Precipitation And Discharge Of Platte River Above Ashland, Bryce B. Pease Jan 1972

Statewide Precipitation And Discharge Of Platte River Above Ashland, Bryce B. Pease

Conservation and Survey Division: Faculty and Staff Publications

No abstract provided.

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Late Paleozoic Trilobites From Southeastern Nebraska, R. K. Pabian, J. A. Fagerstrom Jan 1972

Late Paleozoic Trilobites From Southeastern Nebraska, R. K. Pabian, J. A. Fagerstrom

Conservation and Survey Division: Faculty and Staff Publications

No abstract provided.

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Interbasin Water Transfers And Groundwater Regulation In Nebraska, D. D. Axthelm, V. H. Dreeszen, C. A. Lewis Jan 1972

Interbasin Water Transfers And Groundwater Regulation In Nebraska, D. D. Axthelm, V. H. Dreeszen, C. A. Lewis

Conservation and Survey Division: Faculty and Staff Publications

On November 29, 1971, the Hamilton County Ground Water Con·­servation District sponsored a meeting on groundwater management and regulation. The meeting was held at Aurora, Nebraska, and was designed for irrigators from groundwater conservation dis­tricts and county irrigation associations. Various men from state and federal agencies spoke about a variety of problems that a.re related to groundwater management. Two of the talks that were presented at the meeting are reproduced here, as is a discussion of the rules and regulations that relate to the use of groundwater in the state of Nebraska.

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Nebraska Groundwater Level (Decline & Rise), 1972 Jan 1972

Nebraska Groundwater Level (Decline & Rise), 1972

Conservation and Survey Division: Faculty and Staff Publications

No abstract provided.

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Location Of Registered Irrigation Wells In Nebraska As Of 1972 Jan 1972

Location Of Registered Irrigation Wells In Nebraska As Of 1972

Conservation and Survey Division: Faculty and Staff Publications

No abstract provided.

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Cass County, Weeping Water, R. K. Pabian Jan 1972

Cass County, Weeping Water, R. K. Pabian

Conservation and Survey Division: Faculty and Staff Publications

No abstract provided.

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Use Of Groundwater For Irrigation In 1970: Hamilton And York Counties, Ne, Eugene K. Steele Jr. Dec 1971

Use Of Groundwater For Irrigation In 1970: Hamilton And York Counties, Ne, Eugene K. Steele Jr.

Conservation and Survey Division: Faculty and Staff Publications

No abstract provided.

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Occurrence Of Groundwater In Kimball County, Nebraska: Including Logs Of Test Holes, Frank A. Smith, Vernon L. Souders Jun 1971

Occurrence Of Groundwater In Kimball County, Nebraska: Including Logs Of Test Holes, Frank A. Smith, Vernon L. Souders

Conservation and Survey Division: Faculty and Staff Publications

No abstract provided.

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Geologic And Water-Supply Reports And Maps, Nebraska, United States Dept. Of The Interior May 1971

Geologic And Water-Supply Reports And Maps, Nebraska, United States Dept. Of The Interior

Conservation and Survey Division: Faculty and Staff Publications

A list of reports and maps published by the Geological Survey relating to the geology, mineral, water resources of Nebraska.

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Groundwater Levels In Nebraska, 1970, C.F. Keech May 1971

Groundwater Levels In Nebraska, 1970, C.F. Keech

Conservation and Survey Division: Faculty and Staff Publications

No abstract provided.

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Guidebook To The Geology Along Portions Of The Lower Platte River Valley And Weeping Water Valley Of Eastern Nebraska, R. R. Burchett Apr 1971

Guidebook To The Geology Along Portions Of The Lower Platte River Valley And Weeping Water Valley Of Eastern Nebraska, R. R. Burchett

Conservation and Survey Division: Faculty and Staff Publications

No abstract provided.

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Guidebook To The Late Pliocene And Early Pleistocene Of Nebraska, T. M. Stout, H. M. Degraw, L. G. Tanner, K. O. Stanley, W. J. Wayne, J. B. Swinehart Apr 1971

Guidebook To The Late Pliocene And Early Pleistocene Of Nebraska, T. M. Stout, H. M. Degraw, L. G. Tanner, K. O. Stanley, W. J. Wayne, J. B. Swinehart

Conservation and Survey Division: Faculty and Staff Publications

No abstract provided.

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Use Of Groundwater For Irrigation In Hamilton And York Counties, Nebraska, Eugene K. Steele Jr. Feb 1971

Use Of Groundwater For Irrigation In Hamilton And York Counties, Nebraska, Eugene K. Steele Jr.

Conservation and Survey Division: Faculty and Staff Publications

No abstract provided.

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Directory Of Nebraska Quarries, Pits, And Mines, R. R. Burchett Jan 1971

Directory Of Nebraska Quarries, Pits, And Mines, R. R. Burchett

Conservation and Survey Division: Faculty and Staff Publications

No abstract provided.

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Dunes On The Plains, The Sand Hills Region Of Nebraska, C. F. Keech, R. Bentall Jan 1971

Dunes On The Plains, The Sand Hills Region Of Nebraska, C. F. Keech, R. Bentall

Conservation and Survey Division: Faculty and Staff Publications

No abstract provided.

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Shaded Topographic Map Of Nebraska Jan 1971

Shaded Topographic Map Of Nebraska

Conservation and Survey Division: Faculty and Staff Publications

No abstract provided.

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Nebraska Groundwater Level (Decline & Rise), 1971 Jan 1971

Nebraska Groundwater Level (Decline & Rise), 1971

Conservation and Survey Division: Faculty and Staff Publications

No abstract provided.

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Nebraska Minimum Standards For Artificially Gravel Packed Irrigation Wells, P. E. Fischbach, P. E. Schleusener, V. H. Dreeszen Jan 1971

Nebraska Minimum Standards For Artificially Gravel Packed Irrigation Wells, P. E. Fischbach, P. E. Schleusener, V. H. Dreeszen

Conservation and Survey Division: Faculty and Staff Publications

No abstract provided.

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Shaded Topographic Map Of Nebraska, Conservation And Survey Division Jan 1971

Shaded Topographic Map Of Nebraska, Conservation And Survey Division

Conservation and Survey Division: Faculty and Staff Publications

No abstract provided.

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Re-Exploring The Missouri, Thompson Mylan Stout May 1970

Re-Exploring The Missouri, Thompson Mylan Stout

Conservation and Survey Division: Faculty and Staff Publications

No abstract provided.

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