Earth Sciences Commons^™

Geohydrology Of The High Plains Aquifer In Parts Of Colorado, Kansas, Nebraska, New Mexico, Oklahoma, South Dakota, Texas, And Wyoming, Edwin D. Gutentag, Frederick J. Heimes, United States Geological Survey, Richard R. Luckey, John B. Weeks

United States Geological Survey: Staff Publications

The High Plains aquifer, which underlies about 174,000 square miles in parts of eight states, is the principal source of water in one of the Nation's major agricultural areas. About 170,000 wells pump water from the aquifer to irrigate about 13 million acres in the High Plains. In 1978, the United States Geological Survey began a regional study of the High Plains aquifer to provide geohydrologic data and computer models of the aquifer needed to evaluate the effects of ground-water development. This report describes the geohydrology of the High Plains aquifer. The High Plains aquifer consists mainly of hydraulically connected …

Annual Outflow Of Water From Nebraska, 1950-1983, Conservation Survey Division

Conservation and Survey Division: Faculty and Staff Publications

No abstract provided.

Cretaceous Calcareous Nannofossils From Deep Sea Drilling Project Leg 77, Southeast Gulf Of Mexico, David K. Watkins, Jay L. Bowdler

Department of Earth and Atmospheric Sciences: Faculty Publications

Five of the six sites drilled during Leg 77 of the Deep Sea Drilling Project yielded Cretaceous sediments. Two of these sites, 535 and 540, form a composite section that spans the upper Berriasian through most of the Cenomanian. Olive black marly limestones in this interval yield relatively rich, well-preserved nannofossil assemblages that allow biostratigraphic subdivision of the sequence. This composite section provides important information on the Early Cretaceous history of the Gulf of Mexico, as well as additional information on tropical Lower Cretaceous nannofossil assemblages. The post-Cenomanian nannofossil (and sedimentary) record is limited to a thin, condensed section of …

Gradual Phyletic Evolution At The Generic Level In Early Eocene Omomyid Primates, Kenneth D. Rose, Thomas M. Bown

United States Geological Survey: Staff Publications

Analysis of dental morphology in over 600 stratigraphically controlled specimens of tarsier-like primates from early Eocene strata in Bighorn Basin, Wyoming, provides important new data for understanding the tempo and mode of evolution in primates.

1984 County Gravity Survey, Complete Gravity Listings, Raymond R. Burchett

Conservation and Survey Division: Faculty and Staff Publications

No abstract provided.

Annual Installation Of Irrigation Wells In Nebraska Through 1983, Conservation Survey Division

Conservation and Survey Division: Faculty and Staff Publications

No abstract provided.

Annual Departures From Average Annual Precipitation In Nebraska, 1850-1983, Conservation And Survey Division

Conservation and Survey Division: Faculty and Staff Publications

No abstract provided.

Cenozoic Calcareous Nannofossils From Deep Sea Drilling Project Leg 77: Biostratigraphy And Delineation Of Hiatuses, Thomas H. Lang, David K. Watkins

Department of Earth and Atmospheric Sciences: Faculty Publications

Three of the six Deep Sea Drilling Project (DSDP) Leg 77 sites drilled in the western approaches to the Straits of Florida yielded thick sequences of Cenozoic sediment rich in calcareous nannofossils. Hiatuses are prominent in each of these continuously cored intervals. A prominent upper Oligocene hiatus, observed at each of these three sites, can be correlated to a large-scale "global" regression event. Other disconformable horizons present in the study area cannot be positively related to sealevel fluctuations and may be caused by a number of factors including local tectonic activity. Paleogene sections are generally marked by thick accumulations within …

Dakota Aquifers In Eastern Nebraska, Aspects Of Water Quality And Use, D. R. Lawton, O. Goodenkauf, B. V. Hanson, F. A. Smith

Conservation and Survey Division: Faculty and Staff Publications

No abstract provided.

Correlation Of The Middle Eocene Kellogg Shale Of Northern California, John A. Barron, David Bukry, Richard Z. Poore

United States Geological Survey: Staff Publications

The Kellogg Shale of northern California has traditionally been considered to be late Eocene in age on the basis of benthic foraminifer, radiolarian, and diatom correlations. The 30-m-thick Kellogg section exposed west of Byron, California, however, contains middle Eocene planktonic foraminifers (Zone P12), coccoliths (Subzones CP13c and CP14a), silicoflagellates (Dictyocha hexacantha Zone), and diatoms. Quantitative studies of the silicoflagellates and diatoms show a general cooling trend through the section which is consistent with paleoclimatic trends for this part of the middle Eocene (ca. 42-45 Ma) from elsewhere in the world. Seven new silicoflagellate taxa (Corbisema angularis. C, exilis, …

Hydrochemical Data For The Truckee River Drainage System, California And Nevada, Larry V. Benson

United States Geological Survey: Staff Publications

Abstract

Surface-water samples were collected from the Truckee River drainage system during 1975, 1976, and 1981. Data resulting from chemical analyses of these samples, as well as certain other previously unpublished data, are tabulated in this report. The report contains the following hydrochemical data:

1. Chemical composition of 21 tributaries to Lake Tahoe and the Truckee River upstream from Farad, California (May and October 1971, and June 1972).

2. Chemical composition of the Truckee River at Tahoe City (January 1968-January 1975) and at Farad, California (January 1968-June 1980), and of the Little Truckee River upstream from Stampede Reservoir, California (January …

Monitoring Velocity Variations In The Crust Using Earthquake Doublets: An Application To The Calaveras Fault, California, G. Poupinet, W. L. Ellsworth, J. Frechet

United States Geological Survey: Staff Publications

We present a technique that greatly improves the precision in measuring temporal variations of crustal velocities using an earthquake doublet, or pair of microearthquakes that have nearly identical waveforms and the same hypocenter and magnitude but occur on different dates. We compute differencesin arrival times between seismograms recorded at the same station in the freqency domain by cross correlation of short windows of signal. A moving-window analysis of the entire seismograms, including the coda, gives δ(t), the difference in arrival times versus running time along the seismogram. The time resolution of the method is an order of magnitude better than …

Miocene Burrows Of Extinct Bear Dogs: Indication Of Early Denning Behavior Of Large Mammalian Carnivores, Robert M. Hunt Jr., Xue Xiang-Xu, Joshua Kaufman

Department of Earth and Atmospheric Sciences: Faculty Publications

Partial skeletons of four species of extinct carnivores have been found in their dens excavated in the floodplain of an early Miocene ephemeral braided stream at Agate Fossil Beds National Monument, Nebraska. Bear dogs (Carnivora: Amphicyonidae) were the principal occupants; their den dimensions and body size are similar to those of living wolves and hyenas. Discovery of this predator community extends the record of denning behavior of large mammalian carnivores to the early Miocene, 20 million years ago.

Relative Dating Techniques To Distinguish Late Pleistocene-Holocene Continental Sediments, William J. Wayne

Department of Earth and Atmospheric Sciences: Faculty Publications

Radiometric dating, particularly with ¹⁴C, provides ages for those Late Pleistocene and Holocene sediments that contain datable materials. Standard stratigraphic and morphostratigraphic techniques of superposition, geomorphic position, partial overlap, and offlap provide relative chronology in many situations. The use of multiple relative dating (RD) techniques, developed for the study of glacial deposits, makes use of these techniques where possible, but depends heavily on the additional comparison of the results of surface processes that act continuously and more or less uniformly after accumulation is complete. For sediments at the surface that have not been buried, the most important of …

Glacial Chronology Of The Ruby Mountains–East Humboldt Range, Nevada, William J. Wayne

Department of Earth and Atmospheric Sciences: Faculty Publications

The Ruby Mountains-East Humboldt Range, one of the interior mountain groups of the Basin and Range Province, lies about midway between the Wasatch Mountains and the Sierra Nevada. After Blackwelder’s description in his review of glaciation in the western mountains, Sharp mapped and named the deposits of the Lamoille and Angel Lake glaciations and correlated them with early and late Wisconsin deposits of the Great Lakes area. The refinement of relative dating (RD) methods, the availability of air photos and modem topographic maps, and new road cuts have aided the restudy of these alpine glacial deposits and the basis for …

Annual Departures From Average Annual Precipitation In Nebraska, 1850-1983, Conservation Survey Division

Conservation and Survey Division: Faculty and Staff Publications

No abstract provided.

Annual Departures From Average Annual Precipitation In Nebraska, 1850-1983, Conservation Survey Division

Conservation and Survey Division: Faculty and Staff Publications

No abstract provided.

Nebraska Mineral Operations Review, 1983, Raymond R. Burchett, Duane A. Eversoll

Conservation and Survey Division: Faculty and Staff Publications

No abstract provided.

Inventory Of Irrigation Water Use In Box Butte County, Nebraska 1981, D. R. Lawton, L. L. Leahon

Conservation and Survey Division: Faculty and Staff Publications

No abstract provided.

Paleontological Synthesis, Leg 77, David K. Watkins, Charles L. Mcnulty

Department of Earth and Atmospheric Sciences: Faculty Publications

Biostratigraphic age assignment and paleoecological analysis of the sedimentary material recovered on Deep Sea Drilling Project Leg 77 provide a temporal and paleoenvironmental framework for the reconstruction of the Cretaceous and Cenozoic geologic history of the deep southeastern Gulf of Mexico. Planktonic foraminiferal and calcareous nannofossil biostratigraphy, in conjunction with sedimentologic evidence, indicates the sporadic nature of sedimentation during the Türonian through Holocene throughout the study area. This trend is especially well developed within the Upper Cretaceous, which is largely represented only by a thin, condensed section at a single site. The Cenozoic is somewhat better represented, although the thin, …

Megaclasts In Alluvial Fills From The Ogallala Group (Miocene), Banner, Kimball, And Morrill Counties, Nebraska, Robert F. Diffendal Jr.

Robert F. Diffendal, Jr., Publications

Locally derived blocks and boulders (megaclasts) occur in conglomerate and in sand and gravel fills of channels in the Ogallala Group (Miocene) at localities in Banner, Kimball, and Morrill counties in western Nebraska. Some of the megaclasts are up to one or more orders of magnitude larger than the largest distantly derived grains in the sediments surrounding them. A number of these megaclasts probably moved downslope by mass wasting from outcrop sites on paleovalley sides and were later transported by running water. Other blocks and boulders were eroded by streams from bedrock along channel sides and then were transported by …

Hydrogeology Of Butler County, Nebraska, Marilyn H. Ginsberg

Conservation and Survey Division: Faculty and Staff Publications

No abstract provided.

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

Conservation and Survey Division: Faculty and Staff Publications

No abstract provided.

Methiocarb And Thiram As Thirteen-Lined Ground Squirrel Repellents In Newly Planted Corn, Ann E. Koehler

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

No abstract provided.

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

Conservation and Survey Division: Faculty and Staff Publications

No abstract provided.

Multiple Glaciations Of The Cordon Del Plata, Mendoza, Argentina [Glaciaciones Multiples Del Cordon Del Plata, Mendoza, Argentina], William J. Wayne, Arturo E. Corte

Department of Earth and Atmospheric Sciences: Faculty Publications

Evidence exists for four glaciations in the Río Blanco basin west of Mendoza, Argentina. Morphology, superposition of tills, soil-profile development, loess thickness, and boulder weathering have been the techniques most useful in mapping the tills. Glaciers of Vallecitos (= Wisconsinan) age extended to 2600 m and left distinctive moraines. Tills of two preVallecitos glacier advances cover the floor of the valley from 2600 m to below 2100 m, and remnants of one of the tills extend nearly to the junction with Río Mendoza (1400 m) 13 km below the lowest Vallecitos moraines. These deposits were considered to be mudflows rather …

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).

The Chemical Composition Of Lakes In The North-Central United States, Eville Gorham, Walter E. Dean, Jon E. Sanger

United States Geological Survey: Staff Publications

Lake waters of the north-central U.S.A. are classified into five groups, based on increasing specific conductivity and changes in ionic composition from east to west, from Wisconsin through Minnesota to North and South Dakota. The most dilute group of waters has specific conductivities <29 μnhos x cm^-1 at 25°C; the most concentrated group has specific conductances that range from 7,000 to 73,000 μmhos. As conductivity increases all major ions increase, but there is a shift in cation dominance from Ca²⁺ to Mg²⁺ to Na⁺, and in anion dominance from HCO₃^- to SO₄^2-. This shift …

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: Faculty and Staff Publications

No abstract provided.

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

Conservation and Survey Division: Faculty and Staff Publications

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 …