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Articles 1711 - 1740 of 2260

Full-Text Articles in Earth Sciences

Provenance And Description Of Landslide Masses, Rainbow Gardens, Clark County, Nevada, Joseph R. Parolini May 1981

Provenance And Description Of Landslide Masses, Rainbow Gardens, Clark County, Nevada, Joseph R. Parolini

UNLV Theses, Dissertations, Professional Papers, and Capstones

A landslide breccia of plutonic and metamorphic rocks located 20 km east of Las Vegas, Nevada is interstratified with the late Tertiary Thumb Formation. Rock types of similar mineral composition to the landslide masses in the Rainbow Gardens are found 60 km to the east in the Gold Butte (Nevada) area. The landslide masses were displaced into their present position by lateral strike-slip motion along either the left-lateral Lake Mead fault system or the right-lateral Las Vegas shear zone. In the Rainbow Gardens landslide masses, five plutonic rock types, including Rapakivi granite, match rocks from the Gold Butte area, both …


Nebraska Mineral Operations Review, 1980, D. A. Eversoll, R. R. Burchett May 1981

Nebraska Mineral Operations Review, 1980, D. A. Eversoll, R. R. Burchett

Conservation and Survey Division: Faculty and Staff Publications

No abstract provided.


Geomorphology And Dynamics Of A Sand Wave In Lower Chesapeake Bay, Virginia, Gerardo Miguel Eduardo Perillo Jan 1981

Geomorphology And Dynamics Of A Sand Wave In Lower Chesapeake Bay, Virginia, Gerardo Miguel Eduardo Perillo

OES Theses and Dissertations

A single, more or less isolated, sand wave in a sand wave field recently discovered in the lower Chesapeake Bay, Virginia, was studied intensively for morphology, sedimentology and in terms of dynamic processes. The morphologic investigation consisted of bathymetric surveys of the sand wave field and the specific sand wave. Twenty-five grab samples and four box cores were obtained from different segments of the feature studied. Textural parameters of the samples were determined, and a multivariate technique was utilized to identify subenvironments on the feature. The box cores provided information on the internal structure of the sand wave.

Observations of …


Geology And Groundwater Supplies Of Southern Dawes And Northern Sheridan Counties, Nebraska, Vernon L. Souders Jan 1981

Geology And Groundwater Supplies Of Southern Dawes And Northern Sheridan Counties, Nebraska, Vernon L. Souders

Conservation and Survey Division: Faculty and Staff Publications

The upland plain in southern Dawes and northern Sheridan counties of northwest Nebraska is underlain by rocks of Tertiary age. These rocks overlie those of Cretaceous and Jurassic ages in this region of about 2250 square miles . Strata of Tertiary age are a source of groundwater for most of the irrigation, municipal, stock, and rural-domestic needs of the area.

Nine stratigraphic units of Tertiary.age were defined by examination of test hole samples and logs and by examining electric logs of oil and gas tests, driller's logs of irrigation wells, and outcrops. Stratigraphic correlations are difficult in the area because …


Nebraska Groundwater Level (Decline & Rise) And Location Of Registered Wells, 1981 Jan 1981

Nebraska Groundwater Level (Decline & Rise) And Location Of Registered Wells, 1981

Conservation and Survey Division: Faculty and Staff Publications

No abstract provided.


Annual Outflow Of Water From Nebraska, 1950-1980, Conservation Survey Division Jan 1981

Annual Outflow Of Water From Nebraska, 1950-1980, Conservation Survey Division

Conservation and Survey Division: Faculty and Staff Publications

No abstract provided.


Groundwater Reservoir Management Policy Issue Study: A Contract Report For The State Water Planning And Review Process-Nebraska Natural Resources Commission Jan 1981

Groundwater Reservoir Management Policy Issue Study: A Contract Report For The State Water Planning And Review Process-Nebraska Natural Resources Commission

Conservation and Survey Division: Faculty and Staff Publications

No abstract provided.


Development Of Irrigation Well Drilling In Nebraska, Vance Anderson Jan 1981

Development Of Irrigation Well Drilling In Nebraska, Vance Anderson

Conservation and Survey Division: Faculty and Staff Publications

No abstract provided.


Climate Of Nebraska, Richard E. Myers Sep 1980

Climate Of Nebraska, Richard E. Myers

Conservation and Survey Division: Faculty and Staff Publications

No abstract provided.


Groundwater Levels In Nebraska, 1979, Martin S. Johnson, Darryll T. Pederson Jul 1980

Groundwater Levels In Nebraska, 1979, Martin S. Johnson, Darryll T. Pederson

Conservation and Survey Division: Faculty and Staff Publications

No abstract provided.


Tourmaline - A Prospecting Guide For Massive Base-Metal Sulfide Deposits In The Penobscot Bay Area, Maine, John F. Slack Jun 1980

Tourmaline - A Prospecting Guide For Massive Base-Metal Sulfide Deposits In The Penobscot Bay Area, Maine, John F. Slack

Maine Collection

Tourmaline - A Prospecting Guide for Massive Base-Metal Sulfide Deposits in the Penobscot Bay Area, Maine


by John F. Slack, U.S. Geological Survey

Special Economic Studies Series No.8

Maine Geological Survey, Department of Conservation, Augusta, Maine (June, 1980).

Contents: Abstract / Introduction / Geologic Setting / Massive Sulfide Deposits / Tourmaline Occurrences / Tourmaline: A Guide to Ore / Acknowledgements / References Cited




Ash Hollow Historical Park, Robert F. Diffendal Jr. May 1980

Ash Hollow Historical Park, Robert F. Diffendal Jr.

Robert F. Diffendal, Jr., Publications

Ash Hollow Creek is an intermittent stream forming a southern tributary to the North Platte River. The creek flows only in response to precipitation from locally heavy thunderstorms or to heavy runoff from melting snow in the spring. Western Nebraska has a semi-arid climate and receives less than 20 inches of rainfall per year. Vegetation in the park and surrounding area is typical of the short grass prairie of the Great Plains. Native short grasses grow abundantly on undisturbed tablelands, valley sides, and along principal flood plains of streams and rivers. Prickly pear, barrel cactus, yucca and sagebrush are common …


Relation Of Magnetic And Gravity Field Data To Selected Structural Elements Of The Central Portion Of The Arkoma Basin, John H. Mcbride Jan 1980

Relation Of Magnetic And Gravity Field Data To Selected Structural Elements Of The Central Portion Of The Arkoma Basin, John H. Mcbride

Journal of the Arkansas Academy of Science

In order to acquire a greater understanding of some of the major basement structural features characteristic of the Arkoma basin, magnetic and gravity data have been collected and analyzed for a selected area. Several anomalies exist and are found to be associated with faulting or major fracturing in the Precambrian basement. Modelling of source bodies based on magnetic and gravity values provides quantitative estimates of the depth as well as the geometry of basement structural geology.


Botanical And Ecological Aspects Of Coastal Raised Peatlands In Maine : And Their Relevance To The Critical Areas Program Of The State Planning Office, Ian A. Worley Jan 1980

Botanical And Ecological Aspects Of Coastal Raised Peatlands In Maine : And Their Relevance To The Critical Areas Program Of The State Planning Office, Ian A. Worley

Maine Collection

Botanical and Ecological Aspects of Coastal Raised Peatlands in Maine : and Their Relevance to the Critical Areas Program of the State Planning Office.

by Ian A. Worley

A Report Prepared for the Maine Critical Areas Program, State Planning Office, 184 State Street, Augusta, Maine 04333.

Planning Report No. 69 (January 1980)

Contents: Foreword / Abstract / Table of Contents / List of Figures / List of Tables / Acknowledgements / Introduction / Natural History and Ecology of the Coastal Raised Peatlands / Selection of Coastal Peatlands Recommended for Evaluation by the Critical Areas Program / General Evaluation of Coastal …


A Statistical Analysis Of The Quality Of Surface Water In Nebraska, R. A. Engberg Jan 1980

A Statistical Analysis Of The Quality Of Surface Water In Nebraska, R. A. Engberg

United States Geological Survey: Publications

This report provides descriptive statistics for 29 chemical or biological constituents for 109 stream sites in Nebraska sampled by the U.S. Geological Survey beginning in 1946. Also provided for each site are regression equations relating specific conductance to each of 12 chemical constituents and a regression equation relating specific conductance to stream discharge. The descriptive statistics are presented by river basins. Water leaving these basins that has the lowest mean specific conductance (266 umho/cm) is from the Niobrara River at Verdel, and water that has the highest (1,890 umho/cm) is from the South Platte River at Roscoe. Statewide, the principal …


Configuration Of The Base Of The Principal Aquifer, Conservation And Survey Division, University Of Nebraska-Lincoln Jan 1980

Configuration Of The Base Of The Principal Aquifer, Conservation And Survey Division, University Of Nebraska-Lincoln

Conservation and Survey Division: Faculty and Staff Publications

Conservation and Survey Division. Configuration of the Base of the Principal Aquifer. Map. No Scale. Base Principal Aquifer, 1980 Series. Lincoln: Conservation and Survey Division, University of Nebraska. Print. (date unknown, 1980?)


Collecting In Nebraska's Cretaceous Strata, H. M. Degraw, R. K. Pabian Jan 1980

Collecting In Nebraska's Cretaceous Strata, H. M. Degraw, R. K. Pabian

Conservation and Survey Division: Faculty and Staff Publications

No abstract provided.


The Process And Criteria For Siting Of Hazardous Waste Disposal Facilities In Nebraska, Conservation And Survey Division Jan 1980

The Process And Criteria For Siting Of Hazardous Waste Disposal Facilities In Nebraska, Conservation And Survey Division

Conservation and Survey Division: Faculty and Staff Publications

No abstract provided.


Nebraska Groundwater Level (Decline & Rise) And Location Of Registered Wells, 1980 Jan 1980

Nebraska Groundwater Level (Decline & Rise) And Location Of Registered Wells, 1980

Conservation and Survey Division: Faculty and Staff Publications

No abstract provided.


Nebraska County Map Jan 1980

Nebraska County Map

Conservation and Survey Division: Faculty and Staff Publications

No abstract provided.


Collecting In Nebraska's Glacial Deposit, John Boellstorff Jan 1980

Collecting In Nebraska's Glacial Deposit, John Boellstorff

Conservation and Survey Division: Faculty and Staff Publications

No abstract provided.


Annual Departures From Average Annual Precipitation In Nebraska, 1850-1979, Conservation Survey Division Jan 1980

Annual Departures From Average Annual Precipitation In Nebraska, 1850-1979, Conservation Survey Division

Conservation and Survey Division: Faculty and Staff Publications

No abstract provided.


Nebraska Mineral Operations Review, 1979, Raymond R. Burchett, Duane A. Eversoll Jan 1980

Nebraska Mineral Operations Review, 1979, Raymond R. Burchett, Duane A. Eversoll

Conservation and Survey Division: Faculty and Staff Publications

No abstract provided.


Geology And Groundwater Supplies Of Box Butte County, Nebraska, 1979, V. L. Souders, F. A. Smith, J. B. Swinehart Jan 1980

Geology And Groundwater Supplies Of Box Butte County, Nebraska, 1979, V. L. Souders, F. A. Smith, J. B. Swinehart

Conservation and Survey Division: Faculty and Staff Publications

No abstract provided.


Ash Hollow Historical Park, Robert F. Diffendal Jr. Jan 1980

Ash Hollow Historical Park, Robert F. Diffendal Jr.

Conservation and Survey Division: Faculty and Staff Publications

About Ash Hollow Historical Park in Nebraska (United States).


Collecting In Western Nebraska's Cenozoic Strata, J. B. Swinehart Jan 1980

Collecting In Western Nebraska's Cenozoic Strata, J. B. Swinehart

Conservation and Survey Division: Faculty and Staff Publications

No abstract provided.


Geology Along The Republican River Valley Near Red Cloud, Nebraska, R. K. Pabian, J. B. Swinehart Jan 1980

Geology Along The Republican River Valley Near Red Cloud, Nebraska, R. K. Pabian, J. B. Swinehart

Conservation and Survey Division: Faculty and Staff Publications

No abstract provided.


Groundwater Levels In Nebraska, 1979, Martin S. Johnson, Darryll T. Pederson Jan 1980

Groundwater Levels In Nebraska, 1979, Martin S. Johnson, Darryll T. Pederson

Conservation and Survey Division: Faculty and Staff Publications

No abstract provided.


Broadwater Ne Quadrangle, Morrill County, Nebraska, Robert F. Diffendal Jr. May 1979

Broadwater Ne Quadrangle, Morrill 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° 37'30" — 41° 45'

102° 45' — 102° 52'30"

Scale 1:24,000

Completed June 6, 1979

High resolution .tif file attached below as supplemental file


Interpretive Study And Numerical Model Of The Hydrogeology Upper Big Blue Natural Resources District., Ralph E. Cady, Marilyn H. Ginsberg May 1979

Interpretive Study And Numerical Model Of The Hydrogeology Upper Big Blue Natural Resources District., Ralph E. Cady, Marilyn H. Ginsberg

Conservation and Survey Division: Faculty and Staff Publications

No abstract provided.