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Articles 751 - 780 of 1555
Full-Text Articles in Stratigraphy
Nebraska Groundwater In Storage, Conservation Survey Division
Nebraska Groundwater In Storage, Conservation Survey Division
Conservation and Survey Division: Faculty and Staff Publications
No abstract provided.
Static Pressure At The Ground Under Atmospheric Flow Across A Windbreak, James R. Brandle
Static Pressure At The Ground Under Atmospheric Flow Across A Windbreak, James R. Brandle
Conservation and Survey Division: Faculty and Staff Publications
No abstract provided.
Thayer County Test Hole Logs, Raymond R. Burchett, Frank A. Smith
Thayer County Test Hole Logs, Raymond R. Burchett, Frank A. Smith
Conservation and Survey Division: Faculty and Staff Publications
No abstract provided.
Resource News-Winter 1995
Conservation and Survey Division: Faculty and Staff Publications
No abstract provided.
Resource News-Spring 1995
Conservation and Survey Division: Faculty and Staff Publications
No abstract provided.
Self-Study Report 1995
Conservation and Survey Division: Faculty and Staff Publications
This Self-Study Report for the Conservation and Survey Division (CSD) is a profile of the unit at this point in time. It is presented in three major sections: (1) Background; (2) Current Programs and Achievements; and (3) A Vision of the Future. All sections draw heavily upon documents, staff input, and committee activities going on within the division.
Boyd County Test Hole Logs, Susan Olafsen Lackey, Frank A. Smith, Raymond R. Burchett
Boyd County Test Hole Logs, Susan Olafsen Lackey, Frank A. Smith, Raymond R. Burchett
Conservation and Survey Division: Faculty and Staff Publications
No abstract provided.
Resource Notes-Academic Year 1994-95
Resource Notes-Academic Year 1994-95
Conservation and Survey Division: Faculty and Staff Publications
No abstract provided.
Guidelines For Decommissioning Water Wells, How To Plug Water Wells, Duane A. Eversoll, Delynn R. Hay, Rod J. Tremblay
Guidelines For Decommissioning Water Wells, How To Plug Water Wells, Duane A. Eversoll, Delynn R. Hay, Rod J. Tremblay
Conservation and Survey Division: Faculty and Staff Publications
No abstract provided.
Annual Outflow And Annual Inflow Of Water From/To Nebraska, 1950-1994, Conservation And Survey Division
Annual Outflow And Annual Inflow Of Water From/To Nebraska, 1950-1994, Conservation And Survey Division
Conservation and Survey Division: Faculty and Staff Publications
No abstract provided.
Structural Contour Map On Top Of The Lansing Group, R. R. Burchett
Structural Contour Map On Top Of The Lansing Group, R. R. Burchett
Conservation and Survey Division: Faculty and Staff Publications
No abstract provided.
Banded Agates, Origins And Inclusions, Roger K. Pabian, Andrejs Zarins
Banded Agates, Origins And Inclusions, Roger K. Pabian, Andrejs Zarins
Conservation and Survey Division: Faculty and Staff Publications
No abstract provided.
The Holocene Sedimentary Framework Of The Lower Columbia River Basin, Edward Breed Gates
The Holocene Sedimentary Framework Of The Lower Columbia River Basin, Edward Breed Gates
Dissertations and Theses
The Columbia River is the largest fluvially dominated estuary in the Pacific Northwest, yet the Holocene transgressive fill of this system has not previously been studied. Nearly 1500 industry borehole and water well records in the lower Columbia River basin (LCRB) were analyzed. These records document the sedimentary infilling of the lower 120 miles of the drowned river valley that occurred during the Holocene marine transgression (10-0 ka). Of particular importance is a key stratigraphic marker horizon of volcanic tephra that has been identified throughout the LCRB. INAA was used to determine the geochemical composition of the target tephra layer. …
Fundamentals Of Groundwater Contamination, Darryll T. Pederson
Fundamentals Of Groundwater Contamination, Darryll T. Pederson
Conservation and Survey Division: Faculty and Staff Publications
No abstract provided.
Environments Of Aeolian Deposition In South-Central Nebraska During The Last Glacial Maximum, Zhao-Dong Feng, William C. Johnson, Robert F. Diffendal Jr.
Environments Of Aeolian Deposition In South-Central Nebraska During The Last Glacial Maximum, Zhao-Dong Feng, William C. Johnson, Robert F. Diffendal Jr.
Robert F. Diffendal, Jr., Publications
The Peoria loess of south-central Nebraska, deposited approximately during the last Glacial Maximum, can be subdivided into three zones: an upper laminated loess and a lower massive loess, separated by a dark gley zone in which bison bones and spruce charcoal are found. The lower Peoria unit is characterized by high organic matter content, relatively high bulk density, and common root channels. The upper Peoria unit has rhythmic patterns of two orders: strongly gleyed and weakly gleyed zones alternating in couplets about 2-5 m thick, and coarse- and fine-grained laminae of second order, about 2-4 mm thick. The strongly gleyed …
Geomorphic And Structural Features Of The Alliance 1º × 2º Quadrangle, Western Nebraska, Discernible From Synthetic-Aperture Radar Imagery And Digital Shaded-Relief Maps, Robert F. Diffendal Jr.
Geomorphic And Structural Features Of The Alliance 1º × 2º Quadrangle, Western Nebraska, Discernible From Synthetic-Aperture Radar Imagery And Digital Shaded-Relief Maps, Robert F. Diffendal Jr.
Robert F. Diffendal, Jr., Publications
The digital shaded-relief map of the United States and the synthetic-aperture radar map of the Alliance Nebraska 1º x 2º area prepared by the U.S. Geological Survey (USGS) in the former case and for the USGS in the latter show oriented landforms and lineaments in northwest Nebraska. Parallel and subparallel hills and valleys developed on different geologic materials ranging from shales through sandstones to loess and eolian sand appear to be wind erosional features subsequently modified by running water. The long axes of these hills and valleys generally trend between N40"W and N50"W. Similar features also occur across major areas …
Fossil Charcoal In Cretaceous-Tertiary Boundary Strata: Evidence For Catastrophic Firestorm And Megawave, Michael A. Kruge
Fossil Charcoal In Cretaceous-Tertiary Boundary Strata: Evidence For Catastrophic Firestorm And Megawave, Michael A. Kruge
Department of Earth and Environmental Studies Faculty Scholarship and Creative Works
Organic matter separated from calcareous sandstone from the upper portion of a deep-water tsunami deposit at Arroyo el Mimbral, Taumalipas (Mexico), which marks the biostratigraphically-defined Cretaceous-Tertiary boundary, consists primarily of fossil charcoal, including semifusinite and pyrofusinite. Analytical pyrolysis-gas chromatography-mass spectrometry revealed the highly aromatic and polyaromatic character of the organic matter assemblage, typical of the products of partial combustion. The organic matter probably originated as terrestrial vegetation that was caught in a firestorm and subsequently transported far offshore in the backwash of a megawave. These data are consistent with the hypothesis of combustion of large masses of vegetation triggered by …
Directory Of Nebraska Quarries, Pits, And Mines, R. R. Burchett
Directory Of Nebraska Quarries, Pits, And Mines, R. R. Burchett
Conservation and Survey Division: Faculty and Staff Publications
No abstract provided.
Resource Notes-Academic Year 1993-94
Resource Notes-Academic Year 1993-94
Conservation and Survey Division: Faculty and Staff Publications
No abstract provided.
Storm Dominated Channel Sequences On A Shallow Marine Shelf: Morrowan Of Northwest Arkansas, Kimberley R. Jones, Doy L. Zachry
Storm Dominated Channel Sequences On A Shallow Marine Shelf: Morrowan Of Northwest Arkansas, Kimberley R. Jones, Doy L. Zachry
Journal of the Arkansas Academy of Science
The Brentwood Member of the Bloyd Formation (Morrowan, Pennsylvanian) in northwestern Arkansas contains stratigraphic sequences deposted by tropical storms in middle shelf environments. The deposits are confined to shallow channels incised by strong unidirectional currents into an interval of shale deposited during fair weather conditions. Complete storm sequences reflect initial bottom currents of high competency that declined through time and were succeeded by wave generated oscillatory activity. The storm succession consists of an erosion surface followed by a basal pebble conglomerate, massive grainstone and packstone, whole-fossil wackestone, hummocky cross-strata and a swell lag of platy crinoidcalyxes. As storm activity ceased, …
The Champlain Thrust System In Northwestern Vermont - Structure And Lithology Of The Taconic Foreland Sequence In The Highgate Center Quadrangle, Michael Roger Haschke
The Champlain Thrust System In Northwestern Vermont - Structure And Lithology Of The Taconic Foreland Sequence In The Highgate Center Quadrangle, Michael Roger Haschke
Geology Theses and Dissertations
The Champlain Thrust System, responsible for the final emplacement of the Taconic Allochthon, and which represents the surface trace of the main detachment under the Taconic suite, can be traced throughout the study area in northwestern Vermont, northward into southern Quebec. In the Highgate and St. Albans area this imbricated assemblage consists of 3 main carbonate thrust slices (Highgate Springs-, Philipsburg-, Rosenberg slice), each of which contain rocks deposited during some part of early Cambrian to medial Ordovician time. The Highgate Springs sequence comprises a mildly deformed early to medial Ordovician carbonate-shale succession. Late Cambrian to early Ordovician carbonates of …
Groundwater-Level Changes In Nebraska, 1992, Gregory V. Steele, Perry B. Wigley
Groundwater-Level Changes In Nebraska, 1992, Gregory V. Steele, Perry B. Wigley
Conservation and Survey Division: Faculty and Staff Publications
No abstract provided.
Location Of Registered Irrigation Wells In Nebraska As Of 1994
Location Of Registered Irrigation Wells In Nebraska As Of 1994
Conservation and Survey Division: Faculty and Staff Publications
No abstract provided.
Resource News-Spring 1994
Conservation and Survey Division: Faculty and Staff Publications
No abstract provided.
Resource News-Summer 1994
Conservation and Survey Division: Faculty and Staff Publications
No abstract provided.
Nebraska Mineral Operations Review, 1993, Raymond R. Burchett, Duane A. Eversoll
Nebraska Mineral Operations Review, 1993, Raymond R. Burchett, Duane A. Eversoll
Conservation and Survey Division: Faculty and Staff Publications
No abstract provided.
A Field Trip To The Sand Hills Of Nebraska May 4-6, 1994
A Field Trip To The Sand Hills Of Nebraska May 4-6, 1994
Conservation and Survey Division: Faculty and Staff Publications
The Sand Hills of central Nebraska, covering over 50,000 sq km (19,300 sq miles) constitute a unique physiographic, geologic and hydrologic province in the United States.
Cass County Test Hole Logs, Raymond R. Burchett, Frank A. Smith
Cass County Test Hole Logs, Raymond R. Burchett, Frank A. Smith
Conservation and Survey Division: Faculty and Staff Publications
No abstract provided.
Clay County Test Hole Logs, Raymond R. Burchett
Clay County Test Hole Logs, Raymond R. Burchett
Conservation and Survey Division: Faculty and Staff Publications
No abstract provided.
The Geology Of The Tuff Of Bridge Spring: Southern Nevada And Northwestern Arizona, Shirley Ann Morikawa
The Geology Of The Tuff Of Bridge Spring: Southern Nevada And Northwestern Arizona, Shirley Ann Morikawa
UNLV Theses, Dissertations, Professional Papers, and Capstones
The Tuff of Bridge Spring (TBS) is a regionally-widespread, andesite to rhyolite (59.50 to 74.91 wt. %) ash-flow tuff of mid-Miocene age (ca. 15.2 Ma) that is exposed in the northern Colorado River extensional corridor of southern Nevada and northwestern Arizona. Determination of the areal distribution, geochronology, lithology, geochemistry, and internal stratigraphy of the TBS is important for its establishment as a reliable stratigraphic reference horizon for tectonic reconstructions of the extensional corridor during the middle Miocene. Based on reoccurring patterns of major and trace element variation, the TBS is divided into constant Cr/variable SiO2 and variable Cr/variable SiO …