Open Access. Powered by Scholars. Published by Universities.®

Digital Commons Network™

Open Access. Powered by Scholars. Published by Universities.®

Earth Sciences

Institution
Keyword
Publication Year
Publication
Publication Type
File Type

Articles 57361 - 57390 of 59363

Full-Text Articles in Entire DC Network

D.O. And Other Tests, Walter A. Lawrance Oct 1970

D.O. And Other Tests, Walter A. Lawrance

Walter Lawrance Papers

No abstract provided.


Mill Pollution, Walter A. Lawrance Oct 1970

Mill Pollution, Walter A. Lawrance

Walter Lawrance Papers

No abstract provided.


Press Reports, Walter Lawrance Oct 1970

Press Reports, Walter Lawrance

Walter Lawrance Papers

No abstract provided.


L.A. General Data, Walter A. Lawrance Oct 1970

L.A. General Data, Walter A. Lawrance

Walter Lawrance Papers

No abstract provided.


Computer Sheets, Walter A. Lawrance Oct 1970

Computer Sheets, Walter A. Lawrance

Walter Lawrance Papers

No abstract provided.


Effect Of The Pedernal Axis On Permian And Triassic Sedimentation, Philip F. Hock Aug 1970

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 Aug 1970

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. Jul 1970

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 Jun 1970

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 May 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 May 1970

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 May 1970

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 …


Ua12/2/1 College Heights Herald, Vol. 49, No. 46, Wku Student Affairs May 1970

Ua12/2/1 College Heights Herald, Vol. 49, No. 46, Wku Student Affairs

WKU Administration Documents

WKU Campus Newspaper Reporting Campus, Athletic and Bowling Green, Kentucky News. This issue contains articles:

  • Sutherland, David. Regents Okay Plans for Married Housing
  • Dr. J.P. Cornette to Deliver Spring Commencement
  • Two Comic Operas Billed to Begin Thursday Night
  • Dr. Hubert Marshall to Speak on Campus Tuesday
  • Star Performers to Bow Out – Kathy Walters, Bill Nelson
  • Kappa Delta Seeks Okay for House
  • Western Coed to Represent State in Miss USA Contest – Joanna Smith
  • International Club to Elect Officers
  • Wendell Ford to Speak Here Tomorrow
  • Late Start Better Than None at All – Married Student Housing
  • Lack of Money Forces …


Thermal Requirements To Protect Aquatic Life, Clarence M. Tarzwell May 1970

Thermal Requirements To Protect Aquatic Life, Clarence M. Tarzwell

United States Environmental Protection Agency: Publications

Water temperatures affect aquatic organisms in a number of ways, both directly and indirectly. Some of the latter effects are quite subtle. High temperatures can have direct lethal effects but sublethal levels operating over long periods can be just as harmful through delayed lethal effects and the production of nonlethal stresses which eventually result in changes in the population, reduced growth or reproduction, and the lowering of resistance to parasites, dis ease, and competitors. Temperature, in combination with certain other factors such as day length, influences re producing processes. High water temperatures may stimulate or retard migration, spawning, feeding, and …


Re-Exploring The Missouri, Thompson Mylan Stout May 1970

Re-Exploring The Missouri, Thompson Mylan Stout

Conservation and Survey Division: Faculty and Staff Publications

No abstract provided.


Groundwater Levels In Nebraska, 1969, C.F. Keech May 1970

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

Conservation and Survey Division: Faculty and Staff Publications

No abstract provided.


Areal And Temporal Variations In Developmental Phases Of Syringa Vulgaris L. Throughout The Western United States, Joseph Michael Caprio May 1970

Areal And Temporal Variations In Developmental Phases Of Syringa Vulgaris L. Throughout The Western United States, Joseph Michael Caprio

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

This paper presents the results of the analysis of 10 years of information 1957-1966 on three phases-- begin, peak and end bloom-- of the purple common lilac (Syringa vulgaris L.) using data recorded at approximately 1,000 locations throughout the Western Region of the United States.

The pattern of geographical advance of the various bloom phases is determined by both a manual mapping procedure developed by the author and by standard statistical methods. Manually drawn isophanes for the various elevations for begin bloom phase are based entirely upon the first 5 years of record, 1957-1961. A Zones of Adjustment map to …


Structural Geology Of Eastern Part Of The Smithfield Quadrangle, Utah, Cheryl Leora Galloway May 1970

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 May 1970

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 …


A Kinetic Approach To The Inactivation Of Zinc By Various Soil Constituents, Shingara S. Sandhu May 1970

A Kinetic Approach To The Inactivation Of Zinc By Various Soil Constituents, Shingara S. Sandhu

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

The adsorption reaction of zinc onto prochlorite, pyroxene, and biotite minerals, from dilute solution (water) was studied under isothermal conditions by agitated nonflow experiment method. The equilibrium concentration of zinc in the solution was determined both by radioactive tracer technique and adsorption spectrophotometer methods. The data were collected at three temperatures.

The data were treated by the equation:

∂θ/∂t = k1(1-θ)C - k-1θ

where θ is the fraction of total surface coverage and C is the equilibrium concentration of zinc in solution, k1 and k-1 are the rate constants for the adsorption and reverse …


Cation Exchange And Transport In Soil Columns Undergoing Miscible Displacement, Sung-Ho Lai May 1970

Cation Exchange And Transport In Soil Columns Undergoing Miscible Displacement, Sung-Ho Lai

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

A mathematical model was developed to predict the exchange of one cation by another in a soil column undergoing one dimensional cation solution displacement under steady state flow conditions. The model allowed prediction of both the solution and exchanger phase concentration of the cation in question.

The model consists of a material balance equation which is a parabolic type partial differential equation. The assumption was made that equilibrium was reached instantaneously between the cations in the solution phase and the exchanger phase. This assumption reduced the material balance equation to a form that allowed numerical solution providing the data concerning …


The Effect Of Chemical Competition On Thermodynamics Of Bacterial Adsorption, Deorao R. Khairnar May 1970

The Effect Of Chemical Competition On Thermodynamics Of Bacterial Adsorption, Deorao R. Khairnar

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

The objective of this investigation was to study the effect of chemical competition on thermodynamics of bacterial adsorption. This was done using an experimental system consisting of Mendon silt loam soil as the adsorbent, Staphylococcus aureus as a common adsorbate and sodium chloride (NaCl), sodium lauryl sulfate (SLS), and peptone as competitive adsorbates.

The bacterial adsorption on soil both with and without chemical competition followed Langmuir type isotherms. From the equilibrium data, thermodynamic functions such as free energy, ΔF°, enthalpy, ΔH°, and entropy, ΔS°, were calculated. Observed positive ΔH° values indicated that the bacterial uptake in both noncompetitive and competitive …


Magnesium Ion Inhibition Of Calcium Carbonate Precipitation And Its Relation To Water Quality, John J. Hassett May 1970

Magnesium Ion Inhibition Of Calcium Carbonate Precipitation And Its Relation To Water Quality, John J. Hassett

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

The effect of Mg++ ion on the solubility of calcium carbonate was determined using P. K. Weyls "carbonate saturometer."

The amount of calcium carbonate precipitated or dissolved was measured for five series of waters when equilibrated with solid carbonate.

It was found that the effect of Mg++ ion on solubility depend upon the nature of the solid phase: surface area, coprecipitated Mg++, minerology, etc.

Pure low area calcite showed an increase in solubility which could be explained by ion-pair formation, while its other carbonates departed from this behavior.


Transpiration And Dry Matter Response To Atmospheric Humidity, Matric Suction, And Fertility, Gordon Edgar Warrington May 1970

Transpiration And Dry Matter Response To Atmospheric Humidity, Matric Suction, And Fertility, Gordon Edgar Warrington

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

Growth chamber studies showed that a relationship exists between transpiration and dry matter production of spring wheat (Tritiaum Aestivum L. var . Thatcher). A temperature of 27 C for a 16-hour day,and 21 C at night were used throughout the experiment. Relative humidities (RH) of 12, 25, 71, and 83 percent and matric suctions of 1, 3, and 9 bars were used a l ong with six fertility levels and a 20-day growing period. An equation was developed from previous equations by De Wit and Arkley to describe the transpiration ratio (Tr = mass of water transpired/mass of dry …


Ua12/2/1 College Heights Herald, Vol. 49, No. 42, Wku Student Affairs Apr 1970

Ua12/2/1 College Heights Herald, Vol. 49, No. 42, Wku Student Affairs

WKU Administration Documents

WKU Campus Newspaper Reporting Campus, Athletic and Bowling Green, Kentucky News. This issue contains articles:

  • Environmental Discussions Seek Ways to Save the Earth
  • Blood, Sweat, Tears, Concert Set Saturday
  • U.S.-Soviet Affairs Lecture Set Tonight – John Stoessinger
  • Paper, Yearbook Applications Due
  • Todd, Tom. Enthusiastic Reception Welcomes Southern Folk Festival Performers
  • Miller, Joyce. Greeks Continue Spirited Jousting
  • Environmental Teach-In is Designed to Inform
  • Visitor’s Parking Should Be Added
  • Dowd, James. Answers Vendetta – Military Recruiters
  • Ferguson, Brent. Disagrees with Disagrees – Military Recruiters
  • Bennett, Ellen. Breathing Air May Be Hazardous to Your Health
  • Population Boom: Challenge of 70’s
  • Litter Causes Untold …


Ua12/2/1 College Heights Herald, Vol. 49, No. 41, Wku Student Affairs Apr 1970

Ua12/2/1 College Heights Herald, Vol. 49, No. 41, Wku Student Affairs

WKU Administration Documents

WKU Campus Newspaper Reporting Campus, Athletic and Bowling Green, Kentucky News. This issue contains articles:

  • Walls, Gary. Three-Day Environment Probe Begins with Sessions Monday
  • Miller, Joyce. Festive Week Begins Sunday for Greeks
  • Veterans Village to Succumb to University Expansion
  • Applications Due Wednesday for Publications Positions
  • Greek Carnival Set Tomorrow
  • Western Holds Kentucky Education Association Breakfast
  • On Western Faculty 47 Years
  • Dr. Gordon Wilson Sr. Dies
  • Women’s Dorms to Study Problems of Students
  • Senior Art Exhibits on Display in Gallery
  • Cinema ’70 to Show ‘The Promoter’
  • Environmental Teach-In Deserves Wide Support
  • Ressler, Ed. Deplores Dorms
  • Watkins, Eddie. Wants Married Housing
  • Willingham, …


Guidebook To The Geology Along The Missouri River Bluffs Of Southeastern Nebraska And Adjacent Areas, R. R. Burchett Apr 1970

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.


Ua12/2/1 College Heights Herald, Vol. 49, No. 40, Wku Student Affairs Mar 1970

Ua12/2/1 College Heights Herald, Vol. 49, No. 40, Wku Student Affairs

WKU Administration Documents

WKU Campus Newspaper Reporting Campus, Athletic and Bowling Green, Kentucky News. This issue contains articles:

  • Walls, Gary. Pollution to Get Full Airing During Environmental Teach-In
  • Smith, Don. Nine-Piece Puzzle Booked for April 25 – Blood, Sweat & Tears
  • Walls, Gary. Thoughts Turn Toward South as Awaited Break Approaches
  • New Body to Rest – College Heights Herald, IBM Computer
  • Hightower, Paul. Legislators Feel Independence During Session
  • Folk Festival to Return April 16
  • Applications Being Taken for Administrative Interns
  • Libraries Set Vacation Hours
  • Campus Mail Guidelines Need to Be Clarified
  • Dowd, Jim. Abhors Military Recruiters
  • Yell Leading Program Needs Re-Examination
  • Hawkinson, Kristi. …


Use Of Groundwater For Irrigation: Seward County, Nebraska, J.M. Jess Mar 1970

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 Mar 1970

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

Conservation and Survey Division: Faculty and Staff Publications

No abstract provided.