Physical Sciences and Mathematics Commons^™

Provenance Study Of The Westwater Canyon And Brushy Basin Members Of The Morrison Formation Between Gallup And Laguna, New Mexico, Ruben Martinez

Earth and Planetary Sciences ETDs

The objective of this investigation is to study the provenance of the Westwater Canyon and Brushy Basin Members of the Morrison Formation between Gallup and Laguna, New Mexico. The coarse, subarkosic Westwater Canyon Member is separated from the quartzitic sandstones of the underlying Recapture Member by an unconformity that provides a recognizable datum for correlation and a definite base for the Westwater Canyon Member.

The very pale orange, cliff-forming Westwater Canyon Member consists of Oto 137 m of very coarse- to very fine-grained, poorly sorted, subrounded to angular, arkosic to quartzitic sandstone with numerous lenses of arkosic granules and pebbles …

Petrogenesis Of Orbicular Rock, Tijeras Canyon, Sandia Mountains, New Mexico, Kathleen Affholter

Earth and Planetary Sciences ETDs

A new occurrence of orbicular rock is located in the Sandia Granite at W. long. 106° 25' 30", N. lat. 35° 04' 55" close to the granite-gneiss contact near Tijeras Canyon, Sandia Mountains, New Mexico. The orbicules, set in an aplite-pegmatite granitic matrix, have magmatic and metamorphic cores surrounded by a white plagioclase shell and one or two salmon-colored potassium feldspar shells. The outcrop occurs in two dike-like masses with thicknesses of 1 to 4 m trending N. 5° W. and N. 35° E. for exposed lengths of 16m and 46 m, and is surrounded by biotite syenodiorite and biotite …

Archeological Investigations At The Big Creek Lake Site (24ra34), Lynn Barry Fredlund

Geological Engineering

In August 1977 excavation was conducted at the Big Creek Lake site -24RA34- at the outlet of the 91g Creek Lakes, Selway-Bitterroot Wilderness Area, Ravalli County, Montana. The site contained shallow, disturbed deposits and lacks any statisgraphic separation. One of these occupations was identified by a projectile point type not previously reported from the area. This was termed Big Creek Corner Notched and its temporal affiliation is not precisely known. Comparative material from Colorado and Alberta suggest either Early Archaic or Late Archaic affiliation. The occupations exemplified by Big Creek Corner Notched points and by Pelican Lake-Elko points (Late Archaic …

Geology Newsletter- 1979, Department Of Geology

Geological and Environmental Sciences News

Includes a list of short news items from the chair, Lloyd Schmaltz, addressed to alumni and friends.

Analysis And Interpretation Of The 5,000 Ft (1,538 M) Red-Bed Sequence Encountered In The Sparks Et Al. #1-8 (Michigan Basin Deep Borehole), John H. Fowler

Masters Theses

A 5,000 ft (1,538 m) pre-Mt. Simon (Upper Cambrian) red-bed sequence, encountered in the Gratiot County deep borehole (Sparks et al. #1-8) and herein named the North Star Formation, consists of undeformed recurring beds of immature arkosic sandstone 2 to 34 in (5 to 85 cm) thick. These beds grade upward from erosional basal contacts into mudstone units 1 in to 12 ft (3 cm to 3.8 m) thick. Within the sandstones, grading, horizontal lamination, and crossstratification define Bouma intervals "a", "b", and "c", which combine to form incomplete Bouma sequences. Mudstones exhibit abundant horizontal laminations. Secondary sedimentary structures (load …

Geology Of The Cerro Del Grant Area, Rio Arriba County, North-Central New Mexico, John Richmond Lawrence

Earth and Planetary Sciences ETDs

The present study undertook the geologic mapping and investigation of the stratigraphy, structural geology, igneous petrology and mineral resources of the Cerro del Grant area, a 75- (190 ) region near Coyote, Rio Arriba County, north-central New Mexico. The area is situated at the junction of three geologic provinces: the Chama platform, the Española Basin of the Rio Grande rift, and Jemez volcanic field.

Sedimentary rocks include 2,500 ft (830 m) of sandstone, shale, conglomerate and limestone of Late Triassic to Quaternary age. These strata are unconformably overlain by several hundred feet of mafic, intermediate and rhyolitic lavas which make …

Structural And Petrologic Comparison Of The Southern Sapphire Range, Montana With The Northeast Border Zone Of The Idaho Batholith, Stacy Lon Clark

Masters Theses

No abstract provided.

Atmospheric Implications Of Studies Of Central American Volcanic Eruption Clouds, R. D. Cadle, A. L. Lazrus, B. J. Huebert, L. E. Heidt, William I. Rose, D. C. Woods, Raymond L. Chuan, Richard E. Stoiber, D. B. Smith, Robert A. Zielinski

Department of Geological and Mining Engineering and Sciences Publications

During February 1978 a group of scientists from the National Center for Atmospheric Research, several colleges and universities, the U.S. Geological Survey, and NASA used a specially equipped Beech Queen Air aircraft to make 11 sampling flights in Guatemala through the eruption clouds from the volcanoes Pacaya, Fuego, and Santiguito. Measurements were made of SO₄²⁻, SO₂, HCl, HF, and 11 cations that were in water-soluble form, on samples collected by a specially designed filter pack. Particle size distributions were obtained with a piezoelectric cascade impactor, and the particles were identified by energy dispersive X ray …

Effects Of No-Tillage Fallow As Compared To Conventional Tillage In A Wheat-Fallow System, C. R. Fenster, G. A. Peterson

Historical Research Bulletins of the Nebraska Agricultural Experiment Station

The benefits of reducing tillage by use of herbicides for weed control emphasizes why research was started to study a fallow system where all tillage was replaced by herbicides. Wheat planting was then the only soil disturbing operation. Objectives of the research were to compare the effects of no-tillage (chemical), stubble-mulch and plow (bare fallow) systems of fallow on: 1. Grain yield. 2. Grain protein. 3. Residue retention. 4. Soil nitrate-nitrogen accumulation. 5. Soil water accumulations during fallow. Data presented are in the form of a progress report. These experiments will continue.

Hydrogeologic And Geochemical Investigation Of The Boone-St. Joe Limestone Aquifer In Benton County, Arkansas, Albert E. Ogden

Technical Reports

The Boone-St. Joe limestone aquifer is an important unconfined aquifer for rural residents of Benton County, Arkansas. Pumping tests indicate a large range in production capability of the aquifer. The coefficient of transmissibility and specific capacity range from 24.8 to 24640 gpd/ft and 0.03 to 30 gpm/ft, respectively. No statistical relationship at a = 0.10 was found between each of these parameters and photo-lineament proximity. Drillers' estimated well yield (gpm) also showed no relationship to photo-lineament proximity. It is therefore concluded that choosing well sites along photo-lineaments for higher production is not as reliable for karstified carbonate aquifers such as …

The Origin Of Fine Scale Acoustic Stratigraphy In Deep-Sea Carbonates, Larry A. Mayer

Affiliate Scholarship

In this paper we investigate the origin and geologic significance of the closely spaced high-frequency subbottom acoustic reflectors characteristic of pelagic carbonates. A detailed survey was conducted of a small area in the equatorial Pacific with the Marine Physical Laboratory's Deep-Tow instrument package, providing high-resolution 4-kHz profiles and precise positioning of core samples. The cores were sampled at closely spaced intervals for sound velocity and saturated bulk density. Acoustic impedances were calculated, and a reflection coefficient log determined for the upper 10 m of the sediment column. The reflection coefficient log revealed no interfaces with large reflection coefficients that correlated …

Tb94: Chemical And Physical Properties Of The Boothbay, Brayton, Croghan, Monarda, Plaisted, Scantic, And Swanville Soil Mapping Units, R. V. Rourke, K. A. Schmidt

Technical Bulletins

Seven soil mapping units were each sampled at five locations within Maine. The morphology of the soil was described at each site. The profiles were sampled on a horizonal basis from the soil surface to a depth of 100 cm. The soil samples were taken to the laboratory where their chemical and physical properties were determined. Weighted means and weighted standard deviations were determined for several soil properties. Soil profile descriptions and chemical and physical soil data are presented for each sample site.

Formation Of The Grabens In Southwestern Anatolia, Jean François Dumont, Şükrü Uysal, Şakir Şi̇mşek, I. Hakkı Karamanderesi̇, Jean Letouzey

Bulletin of the Mineral Research and Exploration

No abstract provided.

Middle Cambrian Trilobite Succession In The Çaltepe Formation At Bağbaşi (Hadim-Konya) Central Taurus, Turkey, William T. Dean, Necdet Özgül

Bulletin of the Mineral Research and Exploration

No abstract provided.

Determination Of Zirconium In Brook Sediments By Xrf Spectroscophy, Saim Özkâr, Tanıl Akyüz, Ercan Alparslan, Macide Türkalp

Bulletin of the Mineral Research and Exploration

No abstract provided.

Bakir-Çi̇nko-Kurşun Karişik Konsantreleri̇ni̇n Sülfatlaştirici Kavurma Ve Çözeltme Yöntemi̇yle Üreti̇m Olanaklari Üzeri̇ne Bi̇r Araştirma, Yavuz Ayteki̇n

Bulletin of the Mineral Research and Exploration

No abstract provided.

Mineralogy Of The Madenbelenitepe (Soğukpinar-Bursa) Tin Mineralization, Ahmet Çağatay, Yılmaz Altun, Bülent Arman

Bulletin of the Mineral Research and Exploration

No abstract provided.

Sualti Kütle Akimi Fasi̇yesleri̇: Kavramsal Eleşti̇ri̇ Ve Ortamsal Yorum, Sungu L. Gökçen, Abdurrahim Şahbaz

Bulletin of the Mineral Research and Exploration

No abstract provided.

Description Of Two New Species Of The Genus Dictyoptychus Found In Turkey, Necdet Karacabey Öztemür

Bulletin of the Mineral Research and Exploration

No abstract provided.

Three New Species Of The Genus Miseia And Proposal Of A New Subfamily Of Radiolitidae, Necdet Karacabey Öztemür

Bulletin of the Mineral Research and Exploration

No abstract provided.

Karadeni̇z'İn Güncel Çökelleri̇ Ve Uranyum İçeri̇kleri̇, Abdullah Gedi̇k, Taner Saltoğlu, Hüseyin Kaplan

Bulletin of the Mineral Research and Exploration

No abstract provided.

Lower Jurassic Radiolaria From The Gümüşlü Allochton Of Southwestern Turkey (Taurides Occidentales), Emile A. Pessagno, Andre Poi̇sson

Bulletin of the Mineral Research and Exploration

No abstract provided.

Description Of New Borelis Species From The Hatay (S Of Turkey) And Elaziğ Region (E Of Turkey), Ercüment Si̇rel, Hatice Gündüz

Bulletin of the Mineral Research and Exploration

No abstract provided.

Observations Sur Images Landsat D'Alignements Dans Les Travertins D'Antalya: Discussion Des Relations Probables Entre Neotectonique Et Hydrogeologie, Can Aydar, Jean - François Dumont

Bulletin of the Mineral Research and Exploration

No abstract provided.

A Note On Chrome Spinels And Ore Minerals From The Küre Area, Northern Turkey, Musa Güner

Bulletin of the Mineral Research and Exploration

No abstract provided.

Menderes Masi̇fi̇nde Paragoni̇t Mi̇nerali̇ni̇n Varliği, Alaşehi̇r-Mani̇sa, Remzi Akkök

Bulletin of the Mineral Research and Exploration

No abstract provided.

Peli̇ti̇k Şi̇stlerde Saptanan Karişmamiş Plaji̇yoklazlar, Alaşehi̇r-Mani̇sa, Remzi Akkök

Bulletin of the Mineral Research and Exploration

No abstract provided.

Rubidium-Strontium And Related Studies Of The Salado Formation, Southeastern New Mexico, Joseph K. Register Jr.

Earth and Planetary Sciences ETDs

The Salado Formation, a member of the Ochoa Series, is a bedded salt deposit which is found in the Delaware Basin southeastern New Mexico and west Texas. It is comprised primarily of halite and sylvite with minor amounts of sulfate minerals. Rubidium-strontium age determinations of the evaporite minerals in the Salado indicate an age of final equilibration of 214 15 m.y. This age is fairly consistent with the geologic age of the formation, precluding substantial alkali-alkaline earth migration since deposition. Polyhalite and anhydrite samples from the Salado give / values of about .7078, which are consistent with reported valued for …

Oxygen Isotopic Analysis Of Silicates And Oxides Using Both Bromine Pentafluoride And Fluorine Gas As Reagents, Harold Roy Northrop

Earth and Planetary Sciences ETDs

In recent years the preferred analytical procedure for the extraction of oxygen from silicates and oxides for oxygen isotope analysis has been the oxidation of the samples with either fluorine (F2) or bromine pentafluoride (BrF5) to produce oxygen. Several standards are available for monitoring the extraction procedure, and one in particular (NBS-28) is used in many laboratories. The oxygen-18 oxygen-16 ratios obtained for NBS-28 vary by as much as one permil between laboratories. The major cause of this variation lies in the extraction procedure used. Extraction of oxygen from iron bearing minerals and whole rocks (and minerals containing certain other …

Environmental And Physiological Effects On The Carbon Exchange Rate And Water Use Efficiency Of Alfalfa, Dennis D. Baldocchi

School of Natural Resources: Dissertations, Theses, and Student Research

No abstract provided.