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Articles 1 - 21 of 21
Full-Text Articles in Stratigraphy
Geology Of Ponca State Park, Nebraska, Roger K. Pabian, Dennis R. Lawton
Geology Of Ponca State Park, Nebraska, Roger K. Pabian, Dennis R. Lawton
Conservation and Survey Division
No abstract provided.
Tectonic Implications Of Late Tertiary Strata Exposed Along The Piankatank River, Eastern Virginia, Daniel Stephen Lane
Tectonic Implications Of Late Tertiary Strata Exposed Along The Piankatank River, Eastern Virginia, Daniel Stephen Lane
OES Theses and Dissertations
Biostratigraphic analysis of Late Miocene and Pliocene strata along the Piankatank River in eastern Virginia exposes a juxtaposition of the Eastover and Yorktown Formations. This structure is situated on a NE trending alignment of geological, geomorphic, and geophysical features which run from southern Virginia to northern Delaware. Tectonic jointing in isolated sandstone bodies and fracture controlled drainage patterns provide further evidence of post-middle Pliocene tectonism in the region. The lateral spacing of this structure from the Stafford and Brandywine fault zones and other linear features on the Coastal Plain strongly implies that a structural similarity exists between the Piankatank structure …
Stratigraphy And Textural Analyses Of A Beach Ridge Complex, Cape Henry, Virginia, Daniel Leland Oyler
Stratigraphy And Textural Analyses Of A Beach Ridge Complex, Cape Henry, Virginia, Daniel Leland Oyler
OES Theses and Dissertations
Eight lithological units, documented from the analyses of 26 boreholes, comprise five laterally extensive horizons in the subsurface of Cape Henry, Virginia. Interpretations of the environments of deposition for those units are based upon textural and compositional features, fossils, thickness and distribution of strata, and previous reports about late Tertiary and Quaternary deposits in nearby areas. The incised, Pliocene Chowan River Formation (Unit H) underlies Pleistocene Units F and G which are concentrated in a buried river valley beneath Cape Henry. Estuarine Units D and E resulted from a marine transgression of the study area during the early Holocene. The …
Inventory Of Irrigation Water Use Box Butte County, Nebraska 1981, Dennis R. Lawton, Larry L. Teahon
Inventory Of Irrigation Water Use Box Butte County, Nebraska 1981, Dennis R. Lawton, Larry L. Teahon
Conservation and Survey Division
No abstract provided.
Stratigraphy Of The Northern Part Of Lake Hoyran (Isparta), Cavit Demi̇rkol, Cengiz Yeti̇ş
Stratigraphy Of The Northern Part Of Lake Hoyran (Isparta), Cavit Demi̇rkol, Cengiz Yeti̇ş
Bulletin of the Mineral Research and Exploration
No abstract provided.
Groundwater Levels In Nebraska, 1983, Martin S. Johnson, Darryll T. Pederson
Groundwater Levels In Nebraska, 1983, Martin S. Johnson, Darryll T. Pederson
Conservation and Survey Division
No abstract provided.
Further Comments On The Nature And Developmental History Of Quaternary Pumpkin Creek, Banner, And Morrill Counties, Nebraska, Robert F. Diffendal Jr.
Further Comments On The Nature And Developmental History Of Quaternary Pumpkin Creek, Banner, And Morrill Counties, Nebraska, Robert F. Diffendal Jr.
School of Natural Resources: Faculty Publications
The occurrence of Quaternary anorthosite-rich sand and gravel deposits in south-central Morrill County, Nebraska, supports the idea that Pumpkin Creek formerly flowed farther east than it does today. This eastern extension of the creek was abandoned when another headward cutting tributary of the North Platte River cut through the divide between Pumpkin Creek and the North Platte just east of Jail and Courthouse rocks and captured Pumpkin Creek.
Unusual clast types found in Quaternary deposits along Pumpkin Creek in Banner County may be used to determine some characteristics of the streams that carried them. For example, armored mud balls and …
Relative Dating Techniques To Distinguish Late Pleistocene-Holocene Continental Sediments, William J. Wayne
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 …
Chatham Fault Zone, Old Chatham-East Chatham, New York: Mesostructures And Microstructures: Their Spatial And Age Relationships, Jorge Mora M.
Chatham Fault Zone, Old Chatham-East Chatham, New York: Mesostructures And Microstructures: Their Spatial And Age Relationships, Jorge Mora M.
Geology Theses and Dissertations
Detailed studies in rocks of Mettawee (Late Precambrian? to Early Cambrian) and Walloomsac (Middle Ordovician) slates between Old Chatham and East Chatham, New York, have shown that these rocks were intensely deformed during the Taconic orogeny and a later deformation event(?). Two generations of structures are clearly recognized in the area. The first generation (G1) includes tight west-verging folds whose axial plane foliation is the regional foliation slaty cleavage (S1). These structures are considered synchronous with the regional metamorphism of the Taconic orogeny and correlative with those structures belonging to the D2 deformation event proposed by Ratcliffe (1979) and Rowley …
Quaternary Volcanology Of The West Crater-Soda Peaks Area, Southern Washington Cascade Range, David R. Polivka
Quaternary Volcanology Of The West Crater-Soda Peaks Area, Southern Washington Cascade Range, David R. Polivka
Dissertations and Theses
The West Crater-Soda Peaks area covering about 100 km is located 35 km southeast of Mount St. Helens in southern Washington State. It is one of several Quaternary monogenetic High Cascade volcanic centers overlying the Ohaaapecosh Formation of the Western Cascade Group and interstratified glacial till.These volcanic centers are the most westerly of the range.
1984 County Gravity Survey, Complete Gravity Listings, Raymond R. Burchett
1984 County Gravity Survey, Complete Gravity Listings, Raymond R. Burchett
Conservation and Survey Division
No abstract provided.
Nebraska Mineral Operations Review, 1983, Raymond R. Burchett, Duane A. Eversoll
Nebraska Mineral Operations Review, 1983, Raymond R. Burchett, Duane A. Eversoll
Conservation and Survey Division
No abstract provided.
Annual Installation Of Irrigation Wells In Nebraska Through 1983, Conservation Survey Division
Annual Installation Of Irrigation Wells In Nebraska Through 1983, Conservation Survey Division
Conservation and Survey Division
No abstract provided.
Armored Mud Balls And Friable Sand Megaclasts From A Complex Early Pleistoceme Alluvial Fill, Southwestern Morrill County, Nebraska, Robert F. Diffendal Jr.
Armored Mud Balls And Friable Sand Megaclasts From A Complex Early Pleistoceme Alluvial Fill, Southwestern Morrill County, Nebraska, Robert F. Diffendal Jr.
Robert F. Diffendal, Jr., Publications
Armored mud balls and friable sand megaclasts occur in exposures of a complex Early Pleistocene sand and gravel alluvial fill which caps a strath terrace in southwestern Morrill County, Nebraska. The mudballs are limited to a tributary arroyo. The sand megaclasts occur in sediments deposited along a trunk stream. It is possible that the sand megaclasts were transported to the site in a frozen condition.
Cenozoic Geology Of The Southern Nebraska Panhandle: Old Valleys, Volcaniclastics, And Vertebrates: 1984 Fall Field Trip, Nebraska Geological Society, James B. Swinehart, Robert F. Diffendal Jr., Mary Rebone, Robert Hunt
Cenozoic Geology Of The Southern Nebraska Panhandle: Old Valleys, Volcaniclastics, And Vertebrates: 1984 Fall Field Trip, Nebraska Geological Society, James B. Swinehart, Robert F. Diffendal Jr., Mary Rebone, Robert Hunt
Robert F. Diffendal, Jr., Publications
Two-day field trip:
Duer Ranch Locality, Morrill County, Nebraska
The Duer Ranch locality contains some of the finest and most easily accessible examples of different styles of alluvial cuts and fills in the Cenozoic of Nebraska. It offers a unique area in which to examine the geometries and alluvial fills of several Miocene and Pliocene age paleovalleys and paleogullies. Good exposures of eolian volcaniclastic siltstones and a regionally important volcanic ash of the Oligocene age Brule Formation are also present at the Duer Ranch locality.
Early Miocene Mammals and Lithostratigraphy of the Indian Creek Drainage, Near Bridgeport, Morrill County, Western …
Stratigraphy And Sedimentology Of Paleogene Arkosic And Volcaniclastic Strata, Johnson Creek-Chambers Creek Area, Southern Cascade Range, Washington, Warren Jon Winters
Stratigraphy And Sedimentology Of Paleogene Arkosic And Volcaniclastic Strata, Johnson Creek-Chambers Creek Area, Southern Cascade Range, Washington, Warren Jon Winters
Dissertations and Theses
Over 1150 m of middle to late Eocene nonmarine arkose, lithic arkose, mudstone, and siltstone, referred to here as the Chambers Creek beds, are int~r.stratified with, and overlain by over 1600 m of late Eocene-Oligocsne(?) andesitic volcaniclastic and subordinate volcanic rocks assigned to the Ohanapecosh Formation, in a dissected structural high in the southern Washington Cascade Range, about 18 km south-southeast of the town of Packwood.
Annual Departures From Average Annual Precipitation In Nebraska, 1850-1983, Conservation Survey Division
Annual Departures From Average Annual Precipitation In Nebraska, 1850-1983, Conservation Survey Division
Conservation and Survey Division
No abstract provided.
Annual Departures From Average Annual Precipitation In Nebraska, 1850-1983, Conservation Survey Division
Annual Departures From Average Annual Precipitation In Nebraska, 1850-1983, Conservation Survey Division
Conservation and Survey Division
No abstract provided.
Annual Outflow Of Water From Nebraska, 1950-1983, Conservation Survey Division
Annual Outflow Of Water From Nebraska, 1950-1983, Conservation Survey Division
Conservation and Survey Division
No abstract provided.
Annual Departures From Average Annual Precipitation In Nebraska, 1850-1983, Conservation And Survey Division
Annual Departures From Average Annual Precipitation In Nebraska, 1850-1983, Conservation And Survey Division
Conservation and Survey Division
No abstract provided.
Inventory Of Irrigation Water Use In Box Butte County, Nebraska 1981, D. R. Lawton, L. L. Leahon
Inventory Of Irrigation Water Use In Box Butte County, Nebraska 1981, D. R. Lawton, L. L. Leahon
Conservation and Survey Division
No abstract provided.