Physical Sciences and Mathematics Commons^™

Weathering Stages Of A Tholeiitic Basalt (Dolerite), Queen Maud Mountains, Paul Andrew Mayewski

Earth Science Faculty Scholarship

The sparsity of datable material and key horizons throughout most of the Transantarctic Mountains requires that much of the mapping and correlation of glacial deposits, especially moraines, be based primarily on qualitative techniques. One qualitative method is to characterize the degree of weathering of clasts covering these deposits (Behling, 1971; Calkin, 1971; Nichols, 1971; and Mayewski, 1975). Lacking, however, is a detailed understanding of the role and method of weathering. To help solve this problem, soil studies have been made by Claridge and Campbell (1968) in the Shackleton Glacier region and Everett and Behling (1968), Linkletter (1972), Behling (1971), and …

Petrology Of The Rockport Quarry Limestone (Middle Devonian Traverse Group) Alpena, Presque Isle And Montmorency Counties, Michigan, Charles Willard Cookman

Masters Theses

The basal unit of the dominantly carbonate Traverse Group, the Bell Shale, is gradationally overlain by the Rockport Quarry Limestone which has a thickness of approximately 14 m. The Rockport Quarry Limestone is composed of a dark unrestricted marine subtidal organic-mud packstone facies, comprised of an algal-mat-bearing coral packstone subfacies and a shallower water crinoid-bryozoan grainstone subfacies; a shoal forming stromatoporoid biolithite facies; and a lagoonal micrite facies comprised of a subtidal dense subfacies containing gastropods, ostracods, and calcispheres, and an Intertidal to supratidal fenestral subfacies. The local facies tract reconstructed for the Rockport Quarry Limestone is interpreted to be …

Groundwater Levels In Nebraska, 1975, Michael J. Ellis, Darryll T. Pederson

Conservation and Survey Division

No abstract provided.

Long-Distance Turbidite Correlations In The Horseshoe Abyssal Plain, William H. Hoyt

Geology Theses and Dissertations

Few studies on modern abyssal plain turbidites have attempted to assess the lateral extent of individual units and few have therefore been able to provide any information on the evolution of turbidity deposits across long abyssal plain distances. In the 4755 m-deep Horseshoe Abyssal Plain, ten distinct lithologic units (six of these Iberian Peninsula-derived turbidites) were delineated in nine piston cores on the basis of stratigraphic position, thickness (range of 20 cm to greater than 500 cm), color, sediment type, sedimentary structures, x-ray mineralogy, and the ubiquitous presence of units in all abyssal plain and supplying canyon piston cores. In …

The Effects Of Dredging On The Stability Of An Ebb-Tidal Delta, Lynnhaven Inlet, Virginia, Donald Keith Riggenbach

OES Theses and Dissertations

A channel was dredged in 1965 through the ebb-tidal delta of Lynnhaven Inlet, Virginia. The purpose of this study was to determine if this channel has affected the morphological configuration of the delta. It was proposed that the channel caused the dynamically stable delta to become unstable and change its morphology.

Bathymetric comparisons of seven surveys during the last 122 years, including one conducted during this investigation, show that prior to 1962 and the dredging operations, the delta had become dynamically stable. The present survey shows that the delta has changed its shape in response to the interaction of the …

Nebraska Remote Sensing Center News, Rex Peterson, Paul Seevers

Conservation and Survey Division

No abstract provided.

Stability And Local Effects Of An Offshore Sand Storage Mound, Dam Neck Disposal Site, Virginia Inner Continental Shelf, William Joslyn Saumsiegle

OES Theses and Dissertations

From 1967 to 1974 medium to coarse sand dredged from the Chesapeake Bay was stockpiled approximately three miles offshore of Dam Neck, Virginia in hopes that the sand could be recovered for local beach renourishment projects. The resulting mound was surveyed over a two year period to determine if the sand is being removed by wave and current action and if the creation of a new feature on the ocean bottom changes the wave refraction patterns and perhaps creates local erosion.

Bathymetric profiles across the storage mound show some apparent morphological changes, but a detailed analysis of this data is …

Physiography, Geology, And Water Resources Of Boyd County, Nebraska, Vernon L. Souders

Conservation and Survey Division

No abstract provided.

Distribution Of Carbonate In Surface Sediments Of The Pacific Ocean, W. H. Berger, Charles Adelseck, Larry A. Mayer

Affiliate Scholarship

The distribution of carbonate on the floor of the Pacific has been remapped on the basis of 1313 points from 80 references stored in the World Ocean Sediment Data Bank of Scripps Institution of Oceanography. Percent distribution maps and carbonate versus depth diagrams generally agree with previously published information and reflect the major controlling factors of carbonate sedimentation (depth, hydrography, fertility, and sedimentary processes). While carbonate distributions are of limited use in attempting to construct dissolution profiles, major trends are identifiable. In particular, the degree of lowering of the equatorial calcite compensation depth (CCD) together with an estimate of the …

Laws, Rules, And Regulations Pertaining To Groundwater In Nebraska, Gerald R. Svoboda

Conservation and Survey Division

This publication contains (1) Nebraska laws pertaining to groundwater, and (2) the duties assigned to or the rules and regulations developed by various Nebraska agencies charged with the regulation of groundwater use. Following public hearings, rules and regulations can be changed at any time by state agencies. Each state agency with responsibility for groundwater regulation is able to supply, upon request, its rules and regulations pertaining to groundwater use. Water legislation varies from state to state because of differences in climate, availability and utilization of water, and fundamental legal concepts inherited at the time of statehood. Some states have laws …

La Serie Carbonatee Triasique Du Massif Du Di̇poyraz Dağ (Taurus Occidental, Turquie), J. F. Dumont, O. Monod

Bulletin of the Mineral Research and Exploration

No abstract provided.

Control Of Clay Mineral Distribution By Estuarine Circulation, James River Estuary, Virginia, Jean-Pierre Feuillet

OES Theses and Dissertations

A study was performed on the clay minerals of the James River estuary, Virginia, to determine the predominant factors that influence clay mineral distribution in the estuary. The factors of differential settling, flocculation, and diagenesis show minor or no effects on distribution, while estuarine circulation exerts the strongest influence upon the clay mineral distribution.

There are two clay suites in the James River estuary. The upper James River clay suite is a kaolinite, dioctahedral vermiculite, and mixed-layer suite, with kaolinite being the major mineral. The lower Chesapeake Bay clay suite is an illite, chlorite, and montmorillonite suite, with illite being …

Dynamics And Sedimentology Of Inner Middle Ground - Nine Foot Shoal, Chesapeake Bay, Virginia, Mitchell Alan Granat

OES Theses and Dissertations

The historical, hydrodynamic, and sedimentological development of Inner Middle Ground - Nine Foot Shoal indicates that it is presently in quasi-equilibrium with mutually evasive ebb and flood tidal currents. Bathymetric comparisons among six surveys taken during the past 122 years depict development of the shoal from two linear sand bodies to its present double parabolic morphology. Circulation paths are proposed for each survey.

Information from eight current meter stations on and adjacent to Inner Middle Ground - Nine Foot Shoal were used to determine near-surface and near-bottom tidal current asymmetries and directions. The concepts of bathymetrically diverted currents and mutual …

La Courbure D'Isparta Et L'Origine Des Nappes D'Antalya; Hypothese D'Un Decrochement Majeur, L'Accident Trans-Taurique, Qui A Dedouble Le Dispositif Structural Taurique Etabli Par La Tectogenese Du Cretace Superieur, J.F. Dumont

Bulletin of the Mineral Research and Exploration

No abstract provided.

Water Resources Of Pierce County, Nebraska, Robert E. Brogden, Richard A. Engberg

Conservation and Survey Division

No abstract provided.

A Revision Of The Genus Strategus (Coleoptera: Scarabaeidae), Brett C. Ratcliffe

Bulletin of the University of Nebraska State Museum

The New World genus Strategus Kirby is here defined and revised for the first time. Eight species are described as new: S. atlanticus, S. caymani, S. craigi, S. hipposiderus, S. howdeni, S. longichomperus, S. symphenax, and S. tarquinius; 12 new junior synonyms are established (including the rejection of six previously valid species)'; one species is raised from synonymy; and two new replacement names are proposed. Strategus now contains one fossil species and 31 valid extant species. A key to the males and females of all the species is provided for the first …

Nebraska Mineral Operations Review, 1975, Raymond R. Burchett, Duane A. Eversoll

Conservation and Survey Division

During 1975, there were active in Nebraska 42 limestone quarries; 596 sand, gravel and silt or siltstone pits; 8 clay or shale pits; 22 sandstone pits; and 1 peat pit. These 669 mining operations disturbed 663 acres and restored 161 acres during the year.

Regional Carbonate Deposition Of The Pitkin Limestone (Chesterian): Washington And Crawford Counties, Arkansas, Robert E. Tehan

Journal of the Arkansas Academy of Science

The Pitkin Limestone overlies black shale of the Fayetteville Formation and is the youngest Mississippian unit in the Paleozoic succession of northwest Arkansas. Five major fades have been delineated within the formation by apetrographic examination of samples collected from 17 measured sections: (1) oolith facies, (2) bioclast facies, (3) nodular limestone-shale facies, (4) mudstone facies, and (5) lime mud mound facies. The distribution of these facies in the Pitkin Formation suggests that Fayetteville terrigenous sedimentation was succeeded by the deposition of widespread oolith shoals and skeletal blanket sand bodies across the northern Arkansas structural platform. Sparse accumulations of lime mud …

Algal-Bryozoan Carbonate Buildups Within The Pitkin Limestone (Mississippian-Chesterian), Northwest Arkansas, Alex T. Warmath

Journal of the Arkansas Academy of Science

More than 14 biohermal buildups have been recognized within the Pitkin Limestone (Mississippian-Chesterian) in eastern Washington and western Madison Counties, northwest Arkansas. These buildups resemble previously described algal mounds in upper Pennsylvanian strata of the Midcontinent region, but differ in their faunal and floral constituents. The mounds are composed of calcilutite with variable amounts of spar and fossil allochemical grains. Associated flanking facies consist of mixed biosparite near the core, grading outward into oosparite. A few zones of shaly, poorly washed biomicrite containing rounded clasts bearing Archimedes fragments are interbedded with the flanking mixed biosparite facies. These clasts appear to …

Nebraska Groundwater Level (Decline & Rise) And Location Of Registered Wells, 1976

Conservation and Survey Division

No abstract provided.

Water Resources Data For Nebraska Water Year 1975

Conservation and Survey Division

No abstract provided.

Location Of Registered Irrigation Wells In Nebraska As Of 1976

Conservation and Survey Division

No abstract provided.

Regional Tectonics And Seismicity Of Eastern Nebraska, Annual Report June 1, 1976- June 1, 1977, R. R. Burchett

Conservation and Survey Division

No abstract provided.

Sedimentology Of The Glaciofluvial Deposits Of Woolwich And Pilkington Townships, Ellis Bowes

Theses and Dissertations (Comprehensive)

The Lake Wisconsin glaciofluvial deposits in Woolwich and Pilkington townships are examined for the purpose of environmental reconstruction and the establishment of the paleocurrent patterns. Sediment grain size and primary sedimentary structure are used to define sedimentary facies of environmental studies while the distribution of indicator pebbles, trends in clast size reduction and primary sedimentary structures and employed for paleocurrent analysis. The exposures most representative of the depositional sequences encountered are examined and provide an impression of the sedimentological characteristics of the various glaciofluvial deposits.

Three distinctive types of glaciofluvial deposits can be identified on the basis of surface morphology …