Physical Sciences and Mathematics Commons^™

Depositional Environments Of Siliceous Laminites In The Laney Member Of The Green River Formation, Sublette County, Wyoming, Michael G. Rasmussen

Loma Linda University Electronic Theses, Dissertations & Projects

Siliceous shales of the Laney Member of the Green River Formation are exposed in outcrops around Fontenelle Reservoir in the northwest corner of the Green River Basin, Wyoming. An analysis of these shales is important to an understanding of the origin of laminites in the Green River formation. The shales are rhythmic, varve -like laminites, composed of quartz, authigenic potassium feldspar , dolomite, and zeolite minerals. The association of these minerals suggest that the original sediment contained significant amounts of volcanic ash, and were deposited in a shallow, near-shore, oxygenated saline - alkaline lake environment, as inferred from (1) the …

Hydrogeology Of Butler County, Nebraska, Marilyn H. Ginsberg

Conservation and Survey Division

No abstract provided.

Policy Issue Study On Supplemental Water Supplies, Clinton Vonseggern, Bob Kuzelka

Conservation and Survey Division

No abstract provided.

Atlas Of Wetlands In The Principal Coal Surface Mining Region Of Western Kentucky, William J. Mitsch, Jan R. Taylor, Kimberly B. Benson, Paul L. Hill Jr.

KWRRI Research Reports

This atlas contains maps of wetlands and surface mining activity in the Western Kentucky Coal Field, and focuses on a 3960 km² (1530 mi²) region where approximately 90 percent of surface mining in the Coal field occures. Some present and potential competition exists between surface coal mining and wetland protection. A wetland classification, based on the recent FWS classification, includes six types of palustrine systems and one each of riverine and laucstrine systems. Wetlands and surface mines are located on twenty-seven 7.5 minute USGS quadrangles that define the study region. A total of 460 km² (177 …

Studies In Dye-Tracing Technologies In Karst Hydrogeology, John Thrailkill, Phillip E. Byrd, Stephen B. Sullivan, Lawrence E. Spangler, Charles J. Taylor, Greta K. Nelson, Kevin R. Pogue

KWRRI Research Reports

Information on fluorescent dyes used for water tracing and the results of six studies are reported. Optical brightener, direct yellow, fluorescein, rhodamine (WT), and other dyes are described and the procedures employed in their use ·in the field and in equilibration experiments are discussed. Three of the six studies consisted of investigations of the equilibration with passive detectors of three of the dyes. The absorption of optical brightener on fabric detectors was apparently linear with concentration and with immersion time, while detectors became rapidly saturated with direct yellow. Equilibrium of fluorescein on charcoal detectors with an elutriating solution was not …

Depositional Model Of The Antelope Coal Field, Wyoming, Christine M. Budai

Dissertations and Theses

The coal-bearing sediments of the Antelope coal field in the southcentral Powder River Basin, Wyoming were deposited in paludal and tributary subsystems of the fluvial system that existed in the basin during the early Tertiary. A depositional model for the Antelope coal field was constructed from data collected from approximately 500 drill holes that penetrated the upper 90 meters (300 feet) of the Fort Union Formation. The depositional environments were interpreted from lithologic descriptions and guidelines established in the literature.

The two main coal seams at the Antelope coal field are the Anderson and stratigraphically lower Canyon coal seams. They …

Groundwater Levels In Nebraska, 1982, Martin S. Johnson, Darryll T. Pederson

Conservation and Survey Division

No abstract provided.

The Geology Of Maine's Coastline : A Handbook For Resource Planners, Developers, And Managers, Maine State Planning Office

Maine Collection

The Geology of Maine's Coastline : A Handbook for Resource Planners, Developers, and Managers

Executive Department, Maine State Planning Office, Augusta, Maine, June 1983.

Contents: List of Figures / Introduction: The Geological Connection / Chapter 1: Using the Marine Environments Maps / Chapter 2: Perspectives of the Maine Coast / Chapter 3: The Building Blocks of Maine's Coast / Chapter 4: The Disappearing Shoreline / Where to Go for Help / Some Planning Considerations for Development in Coastal Geologic Environments / Land Use Laws of Special Interest to Individual Coastal Property Owners

Stratigraphy And Structure Of The Miocene "Esmeralda" Formation In Stewart Valley, Mineral County, Nevada, Benjamin L. Clausen

Loma Linda University Electronic Theses, Dissertations & Projects

The Miocene rocks of Stewart Valley, eastern Mineral County, Nevada, consist of volcanic flows and breccias and fluvio-lacustrine sedimentary rocks. They are called the Esmeralda Formation because they contain lithologies similar to those of the Esmeralda type section 100km south; however, the rocks in Stewart Valley were probably deposited in a separate local basin. The lower part of this formation contains small lacustrine claystone deposits (unit 1) that interfinger with volcanic breccias and flows (unit 2). The main fluvio-lacustrine sequence is above the flows and·is divided by the author into five units based on lithology: sandstone and claystone in unit …

Palynology And Paleoecology Of The Fossil Butte Member Of The Eocene Green River Formation In Fossil Basin, Lincoln County, Wyoming, Robert A. Cushman Jr.

Loma Linda University Electronic Theses, Dissertations & Projects

The palynoflora of the Fossil Butte Member of Green River Formation was studied to enhance our understanding of the depositional environment of ancient Fossil Lake. Forty-nine outcrop samples were collected from three measured sections representing the center, the margin, and intermediate areas of Fossil Lake. Of the 49 samples, 12 yielded a fairly well preserved palynomorph assemblage.

A late early Eocene to early middle Eocene age for the Fossil Butte palynoflora is indicated by the presence of Bombacaceae, Eucommia, Ilex, Juglans, Pistillipollenites, Platycarya, Pterocarya, Tilia, and Taxodium. Additional evidence for the early to middle Eocene age of the Fossil Butte …

An Irvingtonian Fauna From The Oldest Quaternary Alluvium In Eastern Pumpkin Creek Valley, Morrill And Banner Counties, Nebraska, R. George Corner, Robert F. Diffendal Jr.

Robert F. Diffendal, Jr., Publications

Vertebrate fossils of Mammuthus meridionalis (Nesti) and Equus sp. cf. E. scotti Gidley occur at two sites in the capping alluvium of the highest strath terrace along the south side of Pumpkin Creek Valley, Nebraska. The presence of these two species supports the conclusion that the age of the capping sediments is probably early Irvingtonian (early Pleistocene).

Geology And Petrochemistry Of Ultramafic And Orbicular Rocks, Zuni Mountains, Cibola County, New Mexico, Ellen E. Lambert

Earth and Planetary Sciences ETDs

Field mapping, petrography, mineral and whole-rock chemistries have been completed on Precambrian ultramafic and orbicular rocks occurring in the Zuni Mountains, New Mexico. These rock types are surrounded by felsic igneous and metasedimentary rocks, including quartz-feldspar gneiss, quartz monzonite aplite, gneissic quartz monzonite and metarhyolite.

Two small orbicular rock outcrops occur along the contact between quartz-feldspar gneiss and gneissic quartz monzonite. Dark-green, hornblende-actinolite orbicules, having curving crystals of amphibole concentrically arranged about a central point, are set in a pink, quartz monzonite matrix. Many orbicules have been broken or deformed into irregular ellipsoids.

Metamorphosed ultramafic rocks, exhibiting original igneous textures, …

A Pilot Plant Scale Investigation Of Possibility Of Using Non-Coking Armutçuk And Amasra Coals In Metallurgical Coke Production, Ümit Özden, Zafer Gencer

Bulletin of the Mineral Research and Exploration

No abstract provided.

The Geology Of The Ağvani̇s Metamorphic Rocks And Neighbouring Formations, Aral I. Okay

Bulletin of the Mineral Research and Exploration

No abstract provided.

The Geology Of The Middle Black Sea (Samsun-Si̇nop) Basin And The Petrology Of The Volcanic Rocks, Abdullah Gedi̇k, Tuncay Ercan, Sadettin Korkmaz

Bulletin of the Mineral Research and Exploration

No abstract provided.

Main Geological Features Of The Area Around Tokat (Dumanli Daği) And Si̇vas (Çeltekdaği) And Setting Of Ophiolitic Melange, Ali Yilmaz

Bulletin of the Mineral Research and Exploration

No abstract provided.

Sedimentation Rate Of Salt Determined By Micrometeorite Analysis, James Matthew Barnett

Masters Theses

The sedimentation rate of the A-l Evaporite of Michigan was determined by analysis of micrometeorites found as inclusions in the halite deposit. The samples were obtained from the Dow Chemical Company salt well number eight. The residue from the dissolved salt was magnetically separated and later analyzed by Particle Induced X-ray Emission (PIXE), X-ray diffraction , and microprobe techniques. The amount of extraterrestrial material was determined from the quantity of nickel present.

A sedimentation rate of .01 to .4 centimeters per year was calculated for the salt based on a constant influx rate of meteoritic material of 1 x 10 …

The Geology And Geochemistry Of The Summit Creek Molybdenum Prospect, Custer County, Idaho, Thomas Murray Hanna

Masters Theses

The Summit Creek stock, a molybdenum prospect located in the Pioneer Mountains of central Idaho, is a 46.7 m.y. old medium grained, slightly porphyritic quartz monzonite, which has intruded the late Ordovician Phi Kappa formation. Trend surface analysis shows that the stock is the product of one intrusive event. Pervasive mineral alteration usually associated with such porphyry (stockwork) molybdenum deposits is not present in this pluton, and the alteration that is present is confined to local faults and fractures.

Geochemical and petrographic evidence suggest that the pluton is a felsic differentiate from a melt which originated at a depth of …

The Geology Of Burnt Ridge Quadrangle And Vicinity Ravalli County, Montana, Randall Reichert

Masters Theses

Peltitic schist, quartzofeldspathic gneiss, and calc-silicate rocks of the Precambrian Belt Supergroup hav ebeen intruded by granatic plutons of the northeastern Idaho batholith within the vicinity of the southern Bitterroot Range, Montana. These units were mylonitized along the eastern margin of the intrusive complex, with shear surfaces presently dipping approximately 20° to the east. Rhyolitic ash flows and associated mafic to felsic dikes developed on and within the granitic-metamorphic terrance during Tertiary time. Numerous northeast- trending and northwest-trending faults and joints are present throughout the mapped region.

The following events play a major role in the geologic history: 1) amphibolite- …

An Inventory Of Public, Industry, And Power-Generating Water Use In Nebraska, 1979 And 1980, Dennis R. Lawton, Cynthia L. Veys, Owen Goodenkauf

Conservation and Survey Division

No abstract provided.

Bibliography Of Nebraska Geology, 1843-1976, John H. Sandy, Jay Fussell

Conservation and Survey Division

Preface

The computer brightened the 1970s considerably by giving researchers a tool for storing, retrieving and manipulating electronically sizable blocks of literary material on a single subject. which would otherwise have cost researchers years of scholarly investigation to bring together. It was in such a propitious moment mat we set out to assemble this state bibliography as an aid to scholars, researchers. scientists, teachers, writers, editors, and decision makers in the earth sciences, universities, and all levels of government.

As we collected, compiled, and checked citations for this bibliography, we relied heavily on the following standard sources that have indexed …

Supplemental Water Supplies Policy Issue Study: A Contract Report For The State Water Planning And Review Process-Nebraska Natural Resources Commission.

Conservation and Survey Division

No abstract provided.

Formation And Zonation Of Ferruginous Bauxite Deposits Of The Chapman Quadrangle, Oregon, Richard Charles Marty

Dissertations and Theses

Two major theories have been advanced to account for the scattered distribution of ferruginous bauxite deposits. Original workers proposed that ferruginous bauxite originally developed over all exposed Columbia River Basalt in western Oregon and was subsequently removed by erosion. Studies which followed have suggested that it may be locally favorable conditions, especially of drainage, which are responsible for deposit distribution. Field mapping in the Chapman Quadrangle shows a possible correlation between a series of sheared zones, which may have improved drainage, and the distribution of ferruginous bauxite deposits. Examination of the pisolitic zone ferruginous bauxite of the Chapman Quadrangle failed …

Geologic Descriptions And Coal Analyses For 1982 Coal Drilling In The Daniel Boone National Forest, Eastern Kentucky, Raymond R. Bergeron, James C. Cobb, Ernie R. Slucher, Richard A. Smath

Information Circular--KGS

This report contains core descriptions, lithologic logs, and analyses of coal from 21 stratigraphic test holes drilled in 1982 in the Daniel Boone National Forest, including the Redbird Purchase Unit, in eastern Kentucky.

The test holes ranged in depth from 85 to 1,988 feet and averaged about 700 feet. A total of 89 coal samples were analyzed. Results of analyses (on the as-received basis) showed the following ranges: ash, 2.37 to 28.8 percent; sulfur, 0.3 to 8.4 percent; and Btu, 9,017 to 14,550 per pound.

Geological And Thermal Aspects Of The Southern San Joaquin Basin, California: Application Of The 40ar/39ar Stepwise Heating Technique To Detrital Microclines, Kenneth Bé

Geology Theses and Dissertations

The depositional history of the southernmost region of the trough-shaped San Joaquin Basin spans from Upper Eocene to Recent time. The stratigraphy reveals both a predominantly marine environment which persisted until the Upper Pliocene, as well as nonmarine environments along the basin's margins. Folds and faults within the basin have resulted directly from movements along the San Andreas fault. Although the exact time of origin of the Big Bend is unclear, this major feature in the San Andreas fault's geometry has played an important role in recent crustal tectonics of southern California. Significantly, the southern San Joaquin's depocenter has undergone …

Geology Of The Fondo Negro Region, Dominican Republic, J. Calvin Cooper

Geology Theses and Dissertations

Detailed geologic mapping of the Fondo Negro-Sierra de Martin Garcia region of the Southwestern Dominican Republic establishes that this area is part of a broad and diffuse Northern Caribbean plate boundary zone (PBZ). Faulting in the study area is predominantly left lateral strike-slip, with secondary compression (thrusting) causing both substantial, and rapid, uplift of the region. Folding associated with the wrench faulting affects rocks of all ages in the field area from Paleocene limestones to Quaternary alluvial fans.
New stratigraphic designations are proposed for mappable litho-units in the area, and these are correlated with Hispaniola stratigraphy in general based on …

The Pre-Tertiary Geology And Mesozoic Tectonic Evolution Of Eastern China, Southeast Asia And Adjacent Regions, Michael P. Klimetz

Geology Theses and Dissertations

Several orogenic belts transecting south-eastern Asia are the sites of former convergent plate margins although there have been varying interpretations of the collisional framework of individual continental blocks, styles of convergence at these zones and the timing of respective collisions. A comprehensive tectonic study of eastern China, Mongolia and the southern Soviet Far East indicates the collision of the South China Block with a combined North China-Northeast China Fold Zone Block in the late Triassic-early Jurassic, their collective suturing to Eurasia in the late Jurassic-early Cretaceous, followed by the Sikhote Alin-Japan Block in the mid to late Cretaceous. The evidence …

Structure And Stratigraphy Of West Haven, Vermont, Christoph K. Steinhardt

Geology Theses and Dissertations

Mapping and structural investigations in an area bounded to to the west by by Grenvillian basement and to the east by allochthonous rocks emplaced during the medial Ordovician Taconic Orogeny led to division of the area into a Western Undeformed Zone and an Eastern Deformed Zone. The former consists of a thin, undeformed shelf sequence of upper Cambrian to lower Ordovician (Canadian) clastics and carbonates, which unconformably overlie Grenvillian basement and dip gently to the east.
The Eastern Deformed Zone consists of early to medial Ordovician carbonates folded about northnortheast trending axes with east to southeast dipping axial surfaces, overlain …

Geology Of The Western Boundary Of The Taconic Allochthon Near Troy And The Anastomosing Cleavage In The Taconic Melange, Zong-Guo Xia

Geology Theses and Dissertations

The Taconic Allochthon is located in eastern New York, western Vermont, western Massachusetts, and western Connecticut and extends about 200 kilometers north-south and east-west for about 25 kilometers. It contains rocks of Late Proterozoic, Cambrian and Ordovician age. The rocks are predominantly slates with lesser amounts of arenites, wackes, limestone, chert, and conglomerates. All rocks have been subjected to chlorite or biotite grade metamorphism and at least two generations of deformation. The emplacement of the Taconic Allochthon onto the coeval shelf took place during the Middle Ordovician Taconic Orogeny.
The study area lies at the western margin of the Taconic …

Structure And Tectonics Of The Keban Metamorphics In The Northern Margin Of The Bitlis Suture Zone, Southeastern Turkey, Gültekin Savci

Geology Theses and Dissertations

The study area near Keban consists of the allochthonous Keban division of the Keban-Malatya crystalline complex and the Yuksekova island-arc rocks of the Bitlis-Puturge Complex in the northern margin of the Bitlis Suture Zone. Detailed mapping shows that the Palaeozoic-Triassic Keban Metamorphics are composed of the following formations: (1) white, massive, karstic Kirklar Marble; (2) phyllitic psammite with calcschist interlayers Calik Formation; and (3) semi-crystallized gray Koyunatlayan Limestone. These formations define a tectonostratigraphy with the Kirklar Marble at the base and the Koyunatlayan Limestone at the top. The detailed lithological description of the Keban Metamorphic rock assemblages suggest that they …