Geology Commons^™

Nebraska Groundwater Level (Decline & Rise), 1971

Conservation and Survey Division: Faculty and Staff Publications

No abstract provided.

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.

Shaded Topographic Map Of Nebraska, Conservation And Survey Division

Conservation and Survey Division: Faculty and Staff Publications

No abstract provided.

Trace Base Metals, Petrography, Rock Alteration Of The Productive Tres Hermanas Stock, Luna County, New Mexico, Peethambaram Doraibabu

Doctoral Dissertations

"Zinc, lead and minor copper-bearing manto-type and vein- type deposits occur in Paleozoic sedimentary rocks adjoining the Tres Hermanas quartz monzonite stock, Luna County, New Mexico. In an attempt to prove or disprove a possible genetic relationship between these mineral deposits and the stock, 99 half-mile or closer orthogonal grid samples from the stock and 22 soil samples from a connecting alluvial area to the north were analysed by atomic absorption technique for trace contents of zinc, lead and copper. Thirty-two of the rock samples were selected on a wider grid and petrographically studied and modal analyses calculated. Argillic, sericitic …

Groundwater Flow, Hydrochemistry, And Uranium Deposition In The Powder River Basin, Wyoming, J. Ladd Hagmaier

Theses and Dissertations

The relation between regional groundwater flow, hydrochemistry, and uranium distribution in the Powder River Basin indicates that uranium was deposited during the Tertiary Period in groundwater recharge areas where the groundwater changed from a sulfate-bicarbonate water to a bicarbonate-rich water.

The regional recharge and discharge areas of present-day groundwater-flow systems have about the same location as the recharge and discharge areas of the Tertiary groundwater-flow systems. The present-day groundwater is recharged in the eastern, western, and especially in the southern margins of the basin and is discharged in the valley of the Powder River, especially in the north. Flow nets …

Origin And Distribution Of Selenium In The Upper Cretaceous Niobrara And Pierre Formations, Northeastern North Dakota, Robert M. Novak

Theses and Dissertations

High concentrations of selenium, often as much as 28 ppm, have been found in the bentonitic zones near the contact of the Niobrara and Pierre Formations of Cretaceous age in northeastern North Dakota. A 64-foot section in the Pembina Hills area reveals that the highest selenium content occurs in shale and marlstone beds adjacent to the bentonite beds which, themselves, contain comparatively little selenium. Higher concentrations of selenium were found in the brown shale than in the black, with a small variation in color making a big difference in selenium content.

The selenium content of the shale and marlstone drops …

Geology, Geochemistry And Lava Tubes In Quaternary Basalts, Northeastern Part Of Zuni Lava Field, Valencia County, New Mexico, James Douglas Causey

Earth and Planetary Sciences ETDs

Basaltic volcanism in the northeastern part of the Zuni lava field is related to a north-northeast trending regional fracture system. This is shown by elongation of centers and their alignment. However, .the fractures do not control the direction of lava tubes.

There are three distinct stages of volcanic activity common to the Zuni lava field:

1) early pyroclastic eruptions,

2) quiescent flows or fissure eruptions􀀅

3) late pyroclastic eruptions.

Evidence for the first stage is sometimes lacking, but the second and third stages can always be seen.

The basalts range from weakly tholeiitic to alkali in nature. Potassium content varies …

Machairodont Cats From The Early Pleistocene Broadwater And Lisco Local Faunas, C. Bertrand Schultz, Larry D. Martin

Bulletin of the University of Nebraska State Museum (1924–2023)

A new species of Ischyrosmilus (I. crusafonti) is reported from the Early Pleistocene Broadwater Local Fauna of Morrill County, Nebraska. Ischyrosmilus sp. is reported from the Early Pleistocene Lisco Local Fauna. Megantereon is reported from the Broadwater Local Fauna and this is the first record of the genus from North America.

Effect Of The Pedernal Axis On Permian And Triassic Sedimentation, Philip F. Hock

Earth and Planetary Sciences ETDs

The area surrounding the Pedernal Hills has been of scientific and economic interest for a number of years. The effect of the Pedernal axis on sedimentation and stratigraphy of late Paleozoic rocks is of major importance. The principal purposes of this study were to determine whether the Precambrian terrane was an active source of sediment and what effect it had on thickness of strata during Permian and Triassic time. the area was also mapped in as much detail as the scale (1:125,000) permitted.

The 1963-64 Lake Mead Survey, J. M. Lara, J. I. Sanders, Bureau Of Reclamation

Publications (WR)

The 1963-64 Lake Mead survey was run to compute the reservoir capacity. Results of the geodetic and hydrographic surveys and sediment sampling equipment are described. The geodetic survey showed Hoover Dam subsided an average of 118 mm since 1935. Sonic sounding, photogrammetry, and crosssectional profiling methods were used to run the hydrographic survey. Reservoir area and capacity tables were generated using an electronic computer. The present lake capacity is 29,755,000 acre-ft and the reservoir surface area is 162,700 acres at elevation 1229 ft. 2,720,000 acre-ft of sediments accumulated in the lake since 1935. A unit weight of 60 Ib/cu ft …

Grain Size Reconnaissance Of The Virginia-North Carolina Inner Shelf Analysis By Settling Technique, Robert Bailey Sanford Jr.

OES Theses and Dissertations

The 2-fold purpose of this study is to calibrate a Rapid Sediment Analyzer and to use it to aid in the determination of the genesis of sediment on the inner continental shelf between Cape Henry and Cape Hatteras. Rapid Sediment Analyzer calibration was conducted by comparison of sieving and settling results of similar sands.

The study area was divided into sediment provinces by both a qualitative procedure (grain size and topography) and a quantitatively procedure (factor-vector analysis). Qualitative provinces are beach and surf, upper shore face, lower shore face, sea floor, and terminal shoals. The berm fines from each terminal …

A Preliminary Survey Of The Damariscotta River Estuary, Lincoln County, Maine, Maine Department Of Economic Development

Maine Collection

A Preliminary Survey of the Damariscotta River Estuary, Lincoln County, Maine

Part I - Hydrology; Part II - Sediments

"Prepared Under a Grant From the Maine Marine Stipend Program".

Maine Department of Economic Development - Division of Science, Technology & Mineral Resources, Augusta, Maine (July 1969 - June 1970).

Surface Energies In The Caso4-H2o System And The Effect Of Supersaturation On The Crystallization Of Gypsum, Sandra C. Feldman

Earth and Planetary Sciences ETDs

The surface energy of gypsum has been experimentally determined to be 70. 2 erg/cm² at 30˚ C. The value for anhydrite is calculated as 112 erg/cm². At various extrapolated supersaturations, the number of particles or ions necessary to form nuclei of gypsum and anhydrite is:

Supersaturation

No. part. or ions/nucleus

Gypsum

Anhydrite

10

60.5

1000

51

8

2

99

20

4

Crystal size measurements and crystal shapes were noted for gypsum within the range of supersaturations studied (45.6 to 131). The maximum crystal size is attained at a slightly lower supersaturation than the critical supersaturation. The shape …

Crystal Structures Of Potassium Ferric Sulfate Minerals., Edward J. Graeber

Earth and Planetary Sciences ETDs

The potassium ferric sulfate minerals, yavapaiite [KFe(so ) J and goldichite [KFe(so4) •4H2oJ were studied 42 2 using x-ray diffraction methods, and the results correlated with the mineral krausite [KFe(so4)2 ·H20J .

Yavapaiite crystallizes in space group C2/m with two formula weights in a unit cell of dimensions a= 8 .152A, b = 5, 153A, c = 7,877A and S = 911.70°. Goldichite , in space group P2 /c, contains four formula weights in a unit cell with a= 10 . 387A, b = 10.486A, c = 9.086A and 6 = 101.67°.

The structures were solved by three-dimensional Patterson syntheses …

Trace-Element Geochemistry Of Southwestern Turquoise, Anne Marguerite Colberg Sigleo

Earth and Planetary Sciences ETDs

Southwestern turquoise (CuAl₆(PO₄)₄ OH₈ · 4H₂O) is associated with Laramide intrusions along the eastern and southern margins of the Colorado Plateau in Colorado, New Mexico, and Arizona, and with a zone of Late Devonian­Mississippian tectonic activity in Nevada. A review, of the previous work on the origin of turquoise is presented. Of these, the supergene hypothesis proposed by Sidney Paige in 1912 generally remains undisputed in the literature. Much of the data presented in this study, however, suggest a hydrothermal mode of formation. The concentrations of Co in particular are most similar …

Re-Exploring The Missouri, Thompson Mylan Stout

Conservation and Survey Division: Faculty and Staff Publications

No abstract provided.

Structural Geology Of Eastern Part Of The Smithfield Quadrangle, Utah, Cheryl Leora Galloway

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

The mapped area represents the eastern three-fourths of the Smithfield quadrangle, Utah. This quadrangle is located in the central part of northern Utah about 8.6 miles south of the Utah-Idaho State Line. The Bear River Range, along the eastern margin of the quadrangle, consists of stratigraphic units ranging in age from Precambrian to Devonian. The Salt Lake Formation of Tertiary age rests unconformably on Precambrian quartzite and Paleozoic units along the western side of the range. The Lake Bonneville Group overlaps Cambrian rocks in the southern part of the area and overlaps the Salt Lake Formation in the northern part. …

Source Rocks And Sediments In Drainage Area Of North Eden Creek, Bear Lake Plateu, Utah-Idaho, Larry W. Mcclurg

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

The Bear Lake Plateau extends north-south across the north central corner of Utah and the southeastern corner of Idaho. North Eden Creek drains westward through part of the plateau and is crossaxial across both strikes of beds and other structures in the area. The formations in the area mapped are of Triassic, Jurassic, and Tertiary age, although only Jurassic and Tertiary rocks contribute sediments to North Eden Creek. The formations consist of sandstones (Nugget), limestones (Twin Creek), and conglomerates (Wasatch). A local extrusion of basalt occurs in the southwestern part of the drainage area.

Particle-size analyses of 15 samples from …

Groundwater Levels In Nebraska, 1969, C.F. Keech

Conservation and Survey Division: Faculty and Staff Publications

No abstract provided.

Guidebook To The Geology Along The Missouri River Bluffs Of Southeastern Nebraska And Adjacent Areas, R. R. Burchett

Conservation and Survey Division: Faculty and Staff Publications

No abstract provided.

Use Of Groundwater For Irrigation: Seward County, Nebraska, J.M. Jess

Conservation and Survey Division: Faculty and Staff Publications

No abstract provided.

Use Of Groundwater For Irrigation: Seward County, Nebraska, J.M. Jess

Conservation and Survey Division: Faculty and Staff Publications

No abstract provided.

Volcanic Rocks Associated With The Western Part Of The Mogollon Plateau Volcano-Tectonic Complex, Southwestern New Mexico, Rodney Charles Rhodes

Earth and Planetary Sciences ETDs

An area of approximately 450 square miles was mapped on a reconnaissance basis, covering part of the western half of the Mogollon Plateau volcano-tectonic complex. This report deals with the geology of the area and its relationship to the regional volcano-tectonic structure of the Mogollon Plateau.

Native Indiana Iron Ores And 19th Century Ironworks, William J. Wayne

Department of Earth and Atmospheric Sciences: Faculty Publications

Introduction / 1

Phase one: Charcoal and native ores / 4

Northern Indiana ironworks and the postglacial bog ores / 4

Southern Indiana ironworks, Pennsylvanian and Mississippian ores / 10

Phase two: Block coals and Missouri ores / 15

Selected bibliography / 21

"The coming of iron manufacturers into the Indiana field should be encouraged. The reopening of ore deposits, the development of the coal fields, the building of furnaces within the state to smelt northern ores, the building of new railroads, and the extension of others, and the aggressive policy of existing roads to encourage industries along their lines, …

A New Tribe Of Saber-Toothed Cats (Barbourofelini) From The Pliocene Of North America, C. Bertrand Schultz, Marian R. Schultz, Larry D. Martin

Bulletin of the University of Nebraska State Museum (1924–2023)

A new genus of Pliocene Saber-toothed felid, Barbourofelis, is proposed and two new species B. fricki and B. morrisi are described. These two forms and other described material represent an unusual lineage of felids with long sabers, shortened crania, and massive postorbital bars. The tribal name Barbourofelini is proposed for this lineage which is presently known in North America from deposits ranging in age from Clarendonian through Kimballian. The Barbourofelini apparently migrated from Eurasia to North America in the Late Miocene or Early Pliocene. Sansanosmilus of the French Vindobonian appears to represent the ancestral stock of these cats. The …

Groundwater Regions In Nebraska

Conservation and Survey Division: Faculty and Staff Publications

No abstract provided.

Eddy Bluff Shelter Of Beaver Reservoir Of Northwest Arkansas, James D. Morrison

Journal of the Arkansas Academy of Science

No abstract provided.

Molluscan Paleontology Of The Pierre Shale (Upper Cretaceous), Bowman County, North Dakota, Kenneth F. Brinster

Theses and Dissertations

The Pierre Shale of Campanian and Early Maestrichtian age in Bowman County, southwestern North Dakota, has an abundant molluscan fauna and 51 species are described herein. The 51 species consist of 1 species of scaphopod, 13 species in 11 genera of gastropods, 24 species' in 17 genera of bivalves, and 13 species in 6 genera of cephalopods.

The stratigraphy of the Pierre Shale in Bowman County was not compiled into a composite section because of the homogeneity of the shale, the lack of distinctive lithologic units, and the slumped condition of the shale. However, the biostratigraphic position of the Bowman …

Authigenic Analcite In The Golden Valley Formation Southwestern North Dakota, Marvin J. Furman

Theses and Dissertations

Authigenic analcite constitutes up to about 60 percent of a massive, arksosic sandstone exposed on major buttes in the North Dakota Badlands. The analcite constitutes up to about 80 percent of a thin analcimolite bed at the top of the arkose unit. The analcite occurs as spherulites in the interstices of the arkose and as a cement in the analcimolite. Three types of spherulites are recognized: (1) spherulites with an internal radial structure; (2) spherulites with a massive center and a peripheral radial structure; and (3) spherulites lacking an internal radial structure or having a poorly-defined internal structure. The spherulites …

Rates Of Hillslope Lowering In The Badlands Of North Dakota, John R. Tinker Jr.

Theses and Dissertations

Measurements in a small drainage basin in the Little Missouri Badlands of western North Dakota indicate an average rate of hillslope lowering by slopewash of 0.41 inch per year on the west-facing hillslopes underlain by the Sentinel Butte Formation, 0.14 inch per year on the southwest-facing hillslopes underlain by the Tongue River Formation, and 0.11 inch per year on the northeast-facing hillslopes underlain by the Tongue River Formation. Soil creep occurs mainly on the Tongue River Formation and is mostly restricted to the northeast-facing hillslopes where the average rate of soil creep parallel to the hillslope surface is 0.23 inch …