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Groundwater Levels In Nebraska, 1977, Michael J. Ellis, Darryll T. Pederson

Conservation and Survey Division: Faculty and Staff Publications

No abstract provided.

Petrology And Structure Of Precambrian Rocks In The Bosque Peak Quadrangle, North Manzano Mountains, Central New Mexico, Duncan L. Edwards

Earth and Planetary Sciences ETDs

Precambrian metamorphic rocks in a part of the North Manzano Mountains, New Mexico, underwent regional synkinematic greenschist facies metamorphism. Abundant green hornblende in greenstones and muscovite, chlorite, and biotite in metapelites tentatively suggest p4 kb and TC during metamorphism. The greenstones were probably derived from basic volcanic rocks; the metapelites were probably derived from shales, siltstones, clay-rich sandstones, cherts (7), and mature quartz sandstones.

The oldest exposed rocks are the Moyos metasediments, a sequence of phyllites and schistose grits that is lithologically transitional to a younger greenstone complex of mostly aphanitic greenstone with intercalated phyllites and metasiltstones and intrusive metadiorite. …

Glinn Ranch Quadrangle, Keith County, Nebraska, Robert F. Diffendal Jr.

Robert F. Diffendal, Jr., Publications

7.5' topgraphic quadrangle showing exposures of bedrock formations and other geologic information.

41° 15' — 41° 22'30"

101° 30' — 101° 37'30"

Scale 1:24,000

Completed September 20, 1978

High resolution .tif file attached below as supplemental file

Martin Quadrangle, Nebraska—Keith County, 7.5 Minute Series (Topographic), Robert F. Diffendal Jr.

Robert F. Diffendal, Jr., Publications

Martin Quadrangle, Nebraska—Keith County

7.5 minute series (topographic), scale 1:24,000

101°37'30" to 101°45'

41°15' to 41°22'30"

Ogallala Group

Completed September 20, 1978

Ogallala Sw Quadrangle, Nebraska—Keith And Perkins Counties, 7.5 Minute Series (Topographic), Robert F. Diffendal Jr.

Robert F. Diffendal, Jr., Publications

Ogallala SW Quadrangle, Nebraska—Keith and Perkins Counties

7.5 minute series (topographic), scale 1:24,000

101°37'30" to 101°45'

41°00' to 41°07'30"

Post-Ogallala sand and gravel

September 20, 1978

Brule Se Quadrangle, Keith And Perkins Counties, Nebraska, Robert F. Diffendal Jr.

Robert F. Diffendal, Jr., Publications

7.5' topgraphic quadrangle showing exposures of bedrock formations and other geologic information.

41° 00' — 41° 07'30"

101° 45' — 101° 52'30"

Scale 1:24,000

High resolution .tif file attached below as supplemental file

Brule (Sw) Quadrangle, Keith And Perkins Counties, Nebraska, Robert F. Diffendal Jr.

Robert F. Diffendal, Jr., Publications

7.5' topgraphic quadrangle showing exposures of bedrock formations and other geologic information.

41° 00' — 41° 07'30"

101° 52'30" — 102° 00'

Scale 1:24,000

High resolution .tif file attached below as supplemental file

Geology Newsletter- 1978, Department Of Geology

Geological and Environmental Sciences News

Vol. 1, No . 4

• Dear Alumni and Friends
• Here and There This and That
• Faculty News
• Graduate Students 1977-78
• Former Faculty
• Colorado River Trip Alumni
• Geology Development Fund

Paleoecology Of The Spiriferid Brachiopods Of The Silica Shale Formation (Middle Devonian), S.E. Michigan And N.W. Ohio, Darioush T. Ghahremani

Masters Theses

Spiriferid brachiopods of the Middle Devonian Silica Formation in northwestern Ohio and southeastern Michigan show many Features that are useful For paleoecologic interpretation. This study is undertaken to examine and interpret the paleoecology and paleobiology of six spiriferid brachiopods Mucrospirifer prolificus, Mucrospirifer grabaui, Mucrospirifer profundus, Mucrospirifer mucronatus, Paraspirifer bownockeri and Spinocyrtia euryteines. All are very abundant and can be easily collected from quarries in the Silica Formation near Sylvania, Ohio.

Fourteen different morphologic characteristics have been tabulated for all specimens used in this study. These characteristics allow interpretations of the ontogenetic de velopment and ecologic relationships of the six studied …

Green Ranch Quadrangle, Lincoln County, Nebraska, Robert F. Diffendal Jr.

Robert F. Diffendal, Jr., Publications

7.5' topgraphic quadrangle showing exposures of bedrock formations and other geologic information.

41° 15' — 41° 22'30"

101° 00' — 101° 07'30"

Scale 1:24,000

Completed July 11, 1978

High resolution .tif file attached below as supplemental file

Sutherland Reservoir Nw Quadrangle, Nebraska—Lincoln County, 7.5 Minute Series (Topographic), Robert F. Diffendal Jr.

Robert F. Diffendal, Jr., Publications

Sutherland Reservoir NW Quadrangle, Nebraska—Lincoln Co.

7.5 minute series (topographic), scale 1:24000

101°07'30" to 101°15'

41°07'30" to 41°15'

Ql = Loess, Post-Ogallala Sand and Gravel, Ogallala Outcrop

July 11, 1978

Nevens Quadrangle, Nebraska—Keith County, 7.5 Minute Series (Topographic), Robert F. Diffendal Jr.

Robert F. Diffendal, Jr., Publications

Nevens Quadrangle, Nebraska—Keith County

7.5 minute series (topographic), scale 1:24,000

101°22'30" to 101°30'

41°07'30" to 41°15'

Ql = Loess

Post-Ogallala sand and gravels

Ogallala Outcrop

Volcanic ash

July 11, 1978

Paxton North Quadrangle, Nebraska—Keith And Lincoln Counties, 7.5 Minute Series (Topographic), Robert F. Diffendal Jr.

Robert F. Diffendal, Jr., Publications

Paxton North Quadrangle, Nebraska—Keith and Lincoln Counties

7.5 minute series (topographic), scale 1:24000

101°15' to 101°22'30"

41°07'30" to 41°15'

Ql=loess, Qsa=sand; Post-Ogallala sand and gravel; Ogallala Outcrop

July 7, 1978

Handbook Of Remote Sensing Imagery Of Connecticut, Daniel L. Civco, William C. Kennard, Michael Wm. Lefor

Storrs Agricultural Experiment Station

No abstract provided.

The Distribution Of Several Metals And Cation Exchange Capacity In Sediment Fractions From An Artificial And Natural Marsh, James River, Virginia, William Nivens

OES Theses and Dissertations

In order to examine the mechanisms by which Fe, Mn, Ca, Zn, Cu, Ni and Pb are bound in sediments, a sequential selective extraction procedure was employed on sediment samples collected at an experimental dredge disposal marsh and a neighboring natural marsh located near Windmill Point, James River, Va. The metal concentrations were determined in six phases, interstitial water, exchangeable, easily reducible (oxides of Mn), organic, moderately, reducible (oxides of Fe), and residual fractions. In addition, the cation exchange capacity (CEC) of the sediments was determined as well as the actual role of organics and colloidal iron coatings as they …

Hershey West Quadrangle, Lincoln County, Nebraska, Robert F. Diffendal Jr.

Robert F. Diffendal, Jr., Publications

7.5' topgraphic quadrangle showing exposures of bedrock formations and other geologic information.

101° 00' — 101° 07'30"

41° 07'30" — 41° 15'

Scale 1:24,000

Completed July 11, 1978

High resolution .tif file attached below as supplemental file

Maxwell Quadrangle, Nebraska—Lincoln County, 7.5 Minute Series (Topographic), Robert F. Diffendal Jr.

Robert F. Diffendal, Jr., Publications

Maxwell Quadrangle, Nebraska—Lincoln County

7.5 minute series (topographic), scale 1:24,000

100°30' to 100°37'30"

41°00' to 41°07'30"

Ogallala Outcrop

Completed June 7, 1978

List Of Geological Survey Geologic And Water-Supply Reports And Maps For Maine, U.S. Department Of The Interior - Geological Survey

Maine Collection

List of Geological Survey Geologic and Water-Supply Reports and Maps for Maine.

United States Department of the Interior - Geological Survey, June 1978.

Contents: Annual Reports / Mineral Resources of the United States / Monographs / Geologic Folios / Topographic Atlas of the United States, Folio 1 / Professional Papers / Bulletins / Water-Supply Papers / Circulars / Maps, Charts and Atlases

A Petrographic And Chemical Study Of Axinite And Scapolite Occurrences In The White Oaks Mining District, Lincoln County, New Mexico, Karen Ricciardi

Earth and Planetary Sciences ETDs

The purpose of this thesis is to report and discuss the chemistry and petrology of the axinite and scapolite occurrences in the White Oaks mining district, Lincoln County, New Mexico. Sampling, reconnaissance field geology, chemical analysis of rock samples, petrographic studies, and unit-cell d terminations for axinite and scapolite were completed for this investigation. The data was used to determine the conditions of formation for the axinite and scapolite.

The axinite is found in small pods, or nodules, of marble near the contact with the syenite-monzonite porphyry stock. The variety of axinite is ferroaxinite which occurs with calcite, actinolite, and …

Surficial Deposits And Geologic History, Northern Bear Lake Valley, Idaho, George C. Robertson Iii

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

Detailed geologic mapping and subsurface study of late Pleistocene and Holocene sediments in northern Bear Lake Valley show at least four episodes of deposition of fluvial, marsh, bay, and lacustrine sediments. from oldest to youngest, these are the Ovid, Liberty, Wardboro, and Lifton episodes. These episodes are substantially different than those proposed by previous investigators. The informal term Bear Lake Formation is formally redefined here as the Bear Lake Group, and includes the newly defined Ovid Formation, Liberty Formation, Lanark Formation, and Rainbow Gravel. The overlying Wardboro Loess, also defined here, provides a probably age of 11,000 to 8,000 years …

Autecology Of Selected Genera Of Mississippian, Permian And Triassic Ammonoids: Analysis Of Coiling Geometries, Edward Ellis Chatelain

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

Ammonoids were collected from the Chainman Formation (Mississippian) of southeastern Nevada and southwestern Utah, the Phosphoria Formation (Permian) of southeastern Idaho and westernmost Wyoming, and the Thaynes Formation (Triassic) of northeastern Nevada and southeastern Idaho. The collections are interpreted to represent unwinnowed, untransported death assemblages of ammonoids which were subject to chemical conditions of the nekto-benthic environment. Associated lithologies were sampled and geochemically analyzed for content of phosphate and organic matter. Ammonoid fossil collections, combined with ammonoids illustrated in the literature, were subjected to the graphical W and D analysis of Raup (1967). The basic parameters involved in the description …

Geology Of The Cerros Del Rio Volcanic Field, Santa Fe, Sandoval, And Los Alamos Counties, New Mexico, Jayne Christine Aubele

Earth and Planetary Sciences ETDs

The Cerros del Rio volcanic field is located about 10 km west of Santa Fe, New Mexico and southeast of the Jemez Mountains volcanic complex. The field lies on the Jemez- La Bajada constriction which separates the Española and the Albuquerque-Belen basins of the Rio Grande rift. At this point the rift is laterally offset 30 km. Approximately 180 sq km were mapped for this study. The northwestern map boundary parallels White Rock Canyon, a 300 m gorge which has been cut by the Rio Grande within the past 1 m. y. About 60 vents were discovered in the area, …

Precambrian Geology And Ore Deposits Of The Pecos Mining District, San Miguel And Santa Fe Counties, New Mexico, William Duncan Riesmeyer

Earth and Planetary Sciences ETDs

The Precambrian terrane north of Pecos, New Mexico, contains meta­volcanic and metasedimentary rocks. The subaqueous volcanic rocks are of bimodal composition (basalt-rhyolite). Volcanism was cyclic; three partial or complete cycles are exposed in the study area. A cycle con­sists of basal basalt, overlying rhyolite and a cap of banded iron form­ation. The chemical characteristics of the volcanic rocks are similar to those of several modern island arcs, suggesting the Pecos volcanic sequence may represent a portion of a similar Precambrian system.

Diverse structural elements in the study area. are related to four periods of deformation: 1) a Precambrian compressional event, …

Uranium And Other Trace Element Geochemistry On The Hopi Buttes Volcanic Province, Northeastern Arizona, Catherine E. Sullivan

Earth and Planetary Sciences ETDs

The Hope Buttes volcanic province lies on the southwestern flank of the Black Mesa Basin in northeastern Arizona. Over 200 diatremes occur in this region. The diatremes fill funnel-shaped vents with maar-craters at the surface. They were formed by phreatomagmatic eruptions along existing northwest-southeast fractures during mid-Pliocene time. Anomalous concentrations of uranium occur in at least 20 of the diatremes. The diatremes and dikes which feed them are composed of monchiquite, a feldspar-free lamprophyre containing analcite, and limburgite, a lamprophyre with or without feldspar in a glassy matrix. The presence of zeolites, serpentine, calcite filling fractures, and the high Fe …

Hydrothermal Alteration At The Roosevelt Hot Springs Thermal Area, Utah: Petrographic Characterization Of The Alteration To 2 Kilometers Depth, J. M. Ballantyne, W. T. Parry

All U.S. Government Documents (Utah Regional Depository)

Hydrothermal alteration in drill cuttings from Thermal Power drillhole 14-2, Roosevelt Hot Springs Thermal area, has been studied petrographically. The hole is sited in alluvium approximately 1.6 km southeast of the old Resort and was rotary drilled to a depth of 1866.0 m. The exact hole location is 2310 FNL, 350 FWL, Sec. 2, Twp 27S, Rge 9W, elevation 1908.5 m. Core was extracted from 792.5 to 795.5 m. Thin sections were made from samples 15.2 m intervals of drill cuttings collected at 1.5 or 3.0 m intervals during drilling. Thin sections were made of 1.5 or 3.0 m intervals …

Shallow Water High-Magnesium Calcite Mud Production And Dispersal, St. Croix, U.S. Virgin Islands, Jonathan A. Fuller

Masters Theses

Boiler Bay, on the northeast coast of St. Croix, is 200 m wide, 800 m long, and about 3-5 m. deep. The hay is separated from the open Caribbean by a barrier reef. Winds from the east drive currents westward across a narrow carbonate platform (where they entrain platform-derived carbonate mud) and into the east end of the bay. Longshore currents continue westward through the bay, and the entrained platform- derived suspended load is combined with bay-produced carbonate mud and swept northwestward off the platform after passing through a 6 km complex of bays along the northeastern shore. The suspended …

Experimental Permeability Studies At Elevated Temperature And Pressure Of Granitic Rocks, Jared Michael Potter

Earth and Planetary Sciences ETDs

Permeability of quartz monzonite from the Los Alamos hot-dry-­rock geothermal well GT-2 was experimentally measured as a function of pressure and temperature. Permeability apparatus slightly modified from that developed by Brace and others (1968) was used in the experiments. Flow rate through the sample was measured using a transient pressure decay method. When combined with the physical characteristics of the sample and several system parameters, this flow rate yielded permeability (k). Permeability of the GT-2 rocks from depths of 8580 ft and 9522 ft behaves like Westerly granite for changes in effective confining pressure. However permeability of these rocks behaves …

Stratigraphy, Sedimentary Petrology, And Depositional Environments Of Tillite In The Upper Precambrian Mount Rogers Formation, Virginia, Richard L. Rexroad

LSU Historical Dissertations and Theses

The upper member of the upper Precambrian Mount Rogers Formation of southwestern Virginia includes thick units of massive conglomeratic mudstone Interpreted as tillite (Rankin, 1970; Blondeau and Lowe, 1972; Blondeau, 1975; Schwab, 1976). The tillite is composed of unsorted angular plutonic, metamorphic, volcanic, and sedimentary rock fragments enclosed within a matrix of sandy hematitic mudstone. The tillite is interbedded with arkosic sandstone, argillite, and conglomerate. Sedimentary structures and textures of these units suggest deposition by glaciers which protruded from land into a standing body of water as floating ice. Glacial drift was deposited in a large body of water, probably …

The Stratigraphy And Structure Of The Columbia River Basalt In The Clackamas River Drainage, James Lee Anderson

Dissertations and Theses

The Clackamas River drainage within the western Cascade Range is approximately aligned with a northwest trending lineation defined by the Portland Hills and the Brothers Fault zone. This area is occupied by an extensive Columbia River Basalt sequence that is deeply incised by the Clackamas River and its tributaries. Two major basalt units of the Yakima Basalt Subgroup, including the Grande Ronde Basalt and the Frenchman Springs Member of the Wanapurn Basalt, are distinguishable in a 515 meter to 550 meter accumulation. Of particular interest is the presence of five trending right-lateral strike-slip faults is consistent with a stress model …

Progress On Rock Glacier Research, John F. Shroder Jr., John R. Giardino

Geography and Geology Faculty Publications

This report is an account of research progress on rock glaciers of Afghanistan, Colorado, and Utah. Because of the preliminary nature of this work, some speculation is present; nevertheless, we think there is evidence for each major, new point expressed. The main thesis of our work is that rock glaciers are polygenetic and appear to be part of a continuum of similar landforms grading morphologically and, presumably, mechanically from one type to another type.