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Full-Text Articles in Paleontology
Southeast Nebraska Geology: Field Trip 3, Roger K. Pabian, Robert F. Diffendal, Jr. Jr., Darwin R. Boardman Ii
Southeast Nebraska Geology: Field Trip 3, Roger K. Pabian, Robert F. Diffendal, Jr. Jr., Darwin R. Boardman Ii
Robert F. Diffendal, Jr., Publications
The purpose of this trip is to familiarize you with the latest Pennsylvanian and earliest Permian rocks that are exposed in extreme southeastern Nebraska. You will see eight exposures of these rocks and will have ample opportunity to collect lithologic samples, as well as samples for both macro- and micro-fossils. The stops have been selected to show you examples of several different environments that existed in southeastern Nebraska in the late Paleozoic. These include subaerial deposits with paleosols, nearshore and offshore marine clastic and carbonate sequences. Each stop is covered in detail in the handouts that have been furnished to …
Ashfall Historic Park: Field Trip 5, Robert F. Diffendal Jr.
Ashfall Historic Park: Field Trip 5, Robert F. Diffendal Jr.
Robert F. Diffendal, Jr., Publications
Ashfall Fossill Beds: A State Historical Park. Brochure. Nebraska Game and Parks Commission and University of Nebraska State Museum
Research Reports, 1978. Projects: A Miocene Rhinoceros Herd Buried in Volcanic Ash. Grant Recipient: Michael R. Voorhies, Division of Vertebrate Paleontology, University of Nebraska State Museum, Lincoln, Nebraska.
Geologic Framework of the Niobrara River Drainage Basin and Adjacent Areas in South Dakota Generally East of the 100th Meridian West Longitude and West of the Missouri River Robert F. Diffendal, Jr. and Michael R. Voorhies. Nebraska Geological Survey Report of Investigations, number 9.
Probable Glacial Climatic Conditions In Source Areas During Deposition Of Parts Of The Ash Hollow Formation, Ogallala Group (Late Tertiary), Of Western Nebraska, Patricia E. Helland, Robert F. Diffendal Jr.
Probable Glacial Climatic Conditions In Source Areas During Deposition Of Parts Of The Ash Hollow Formation, Ogallala Group (Late Tertiary), Of Western Nebraska, Patricia E. Helland, Robert F. Diffendal Jr.
Robert F. Diffendal, Jr., Publications
Evidence of the climatic conditions in the mountain sediment source areas for the late Tertiary Ash Hollow Formation of the Ogallala Group in western Nebraska has been sought in an SEM (scanning electron microscope) study of surface features on detrital quartz grains from these deposits. The following lines of indirect evidence raised the possibility of glacial conditions: uplift of up to 3500 m in the source areas, paleohydrologic parameters indicative of a transport system analogous to the modern North Saskatchewan River, and possible cold climate surface features on cobbles from the deposits. SEM analysis shows that five of the nine …
Late Pennsylvanian And Early Permian Cyclic Sedimentation, Paleogeography, Paleoecology, And Biostratigraphy In Kansas And Nebraska, Roger K. Pabian, Robert F. Diffendal, Jr. Jr.
Late Pennsylvanian And Early Permian Cyclic Sedimentation, Paleogeography, Paleoecology, And Biostratigraphy In Kansas And Nebraska, Roger K. Pabian, Robert F. Diffendal, Jr. Jr.
Robert F. Diffendal, Jr., Publications
Overview of Upper Pennsylvanian Cyclic Sedimentation in Kansas and Nebraska, Philip H. Heckel, Department of Geology, University of Iowa, Iowa City, Iowa
With contributions from:
Christopher G. Maples and W. Lynn Watney, Kansas Geological Survey, Lawrence, Kansas
John Harris, Shell Western Exploration and Production, Inc., Houston, Texas
David Ball, Champlin Petroleum Company, Houston, Texas
Philip H. Heckel, University of Iowa, Iowa City, Iowa
R. R. West, V. Voegeli, S. Roth, K. Leonard, H. R. Feldman, and C. Cunningham, Kansas State University, Manhattan, Kansas
Royal H. Mapes, Ohio University, Athens, Ohio
Hans-Peter Schultze, University of Kansas, Lawrence, Kansas
R. Matt Joeckel, …