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Paleontology

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Articles 421 - 450 of 1258

Full-Text Articles in Geology

Merrick County Test Hole Logs, Frank A. Smith Jan 1999

Merrick County Test Hole Logs, Frank A. Smith

Conservation and Survey Division: Faculty and Staff Publications

No abstract provided.


Sarpy County Test Hole Logs, Raymond R. Burchett, Frank A. Smith Jan 1999

Sarpy County Test Hole Logs, Raymond R. Burchett, Frank A. Smith

Conservation and Survey Division: Faculty and Staff Publications

No abstract provided.


Classification Of Torbanite And Cannel Coal. I. Insights From Petrographic Analysis Of Density Fractions., Zhiwen Han, Michael A. Kruge, John C. Crelling, David F. Bensley Jan 1999

Classification Of Torbanite And Cannel Coal. I. Insights From Petrographic Analysis Of Density Fractions., Zhiwen Han, Michael A. Kruge, John C. Crelling, David F. Bensley

Department of Earth and Environmental Studies Faculty Scholarship and Creative Works

Torbanite and cannel coal are considered to be coals because of their low mineral content and overall physical morphology. However, the texture and composition of the organic matter in torbanite and cannel coal are similar to the kerogen occurring in oil shales and lacustrine source rocks. Therefore, understanding the nature and origin of organic components in torbanite and cannel coal is of significance in the study of kerogen and petroleum formation. In this research, a set of torbanites and cannel coals from different locations throughout the world were petrographically characterized and processed using a density gradient centrifugation (DGC) technique. Microscopically, …


A Biogeochemical Comparison Of Fossil (Carboniferous) And Modern Crustose Red Algae, Michael A. Kruge, John E. Utgaard, William Ferry Jan 1999

A Biogeochemical Comparison Of Fossil (Carboniferous) And Modern Crustose Red Algae, Michael A. Kruge, John E. Utgaard, William Ferry

Department of Earth and Environmental Studies Faculty Scholarship and Creative Works

The nature of the contribution of the various types of algae to sedimentary organic matter continues to be a topic of research interest. Crustose red algae have however received less attention than other types. The fossil calcareous red algae (Rhodophyta) analyzed in this study are two relatively unrecrystallized specimens of Parachaetetes (Family Solenoporacea) from the lower part of the Ste. Genevieve Formation (Carboniferous, Visean) in Union County, Illinois, USA. They occurred in the patch reef phase of a small carbonate mudmound-patchreef. The three modern specimens (collected and identified by F. Collier) are the crustose algae Lithothamnion, Clathromorphum and Phymatolithon …


Howard County Test Hole Logs, Vincent H. Dreeszen Jan 1999

Howard County Test Hole Logs, Vincent H. Dreeszen

Conservation and Survey Division: Faculty and Staff Publications

No abstract provided.


Kearney County Test Hole Logs, Scott E. Summerside Jan 1999

Kearney County Test Hole Logs, Scott E. Summerside

Conservation and Survey Division: Faculty and Staff Publications

No abstract provided.


2018 Nebraska Water Leaders Academy - Final Report, Mark E. Burbach Jan 1999

2018 Nebraska Water Leaders Academy - Final Report, Mark E. Burbach

Conservation and Survey Division: Faculty and Staff Publications

Nineteen participants completed the 2018 Water Leaders Academy bringing the total number of graduates to 120 since the inception of the program in 2011. Assessment of participants’ transformational leadership skills, champion of innovation skills, water knowledge and engagement, civic capacity, and entrepreneurial leadership behaviors showed a significant increase over the course of the year, from both participants’ and their raters’ perspectives. Feedback from participants was highly positive and constructive. Participant concerns were addressed, and only minor changes are planned for the 2019 Academy curriculum. Results of the program assessment indicate that the curriculum is meeting Academy objectives. Most importantly, Alumni …


Phelps County Test Hole Logs, S. E. Summerside Jan 1999

Phelps County Test Hole Logs, S. E. Summerside

Conservation and Survey Division: Faculty and Staff Publications

No abstract provided.


Groundwater-Level Changes In Nebraska 1996, Abraham H. Chen, Mohan J. Khisty Jan 1999

Groundwater-Level Changes In Nebraska 1996, Abraham H. Chen, Mohan J. Khisty

Conservation and Survey Division: Faculty and Staff Publications

No abstract provided.


Douglas County Test Hole Logs, Raymond R. Burchett, Frank A. Smith Jan 1999

Douglas County Test Hole Logs, Raymond R. Burchett, Frank A. Smith

Conservation and Survey Division: Faculty and Staff Publications

No abstract provided.


Dawson County Test Hole Logs, Frank A. Smith Jan 1999

Dawson County Test Hole Logs, Frank A. Smith

Conservation and Survey Division: Faculty and Staff Publications

No abstract provided.


Hall County Test Hole Logs, Vincent H. Dreeszen Jan 1999

Hall County Test Hole Logs, Vincent H. Dreeszen

Conservation and Survey Division: Faculty and Staff Publications

No abstract provided.


Hamilton County Test Hole Logs, Perry B. Wigley Jan 1999

Hamilton County Test Hole Logs, Perry B. Wigley

Conservation and Survey Division: Faculty and Staff Publications

No abstract provided.


Wayne County Test Hole Logs, Sue Olafsen Lackey, Frank A. Smith, Raymond R. Burchett Jan 1999

Wayne County Test Hole Logs, Sue Olafsen Lackey, Frank A. Smith, Raymond R. Burchett

Conservation and Survey Division: Faculty and Staff Publications

No abstract provided.


Hydrologic Setting Of Two Interdunal Valleys In The Central Sand Hills Nebraska, D. C. Gosselin, S. Drda, F. E. Harvey, J. Goeke Jan 1999

Hydrologic Setting Of Two Interdunal Valleys In The Central Sand Hills Nebraska, D. C. Gosselin, S. Drda, F. E. Harvey, J. Goeke

Conservation and Survey Division: Faculty and Staff Publications

No abstract provided.


Surface Features Of The Salt Basin Of Lancaster County, Nebraska, R. M. Joeckel, B. A. Clement Jan 1999

Surface Features Of The Salt Basin Of Lancaster County, Nebraska, R. M. Joeckel, B. A. Clement

Conservation and Survey Division: Faculty and Staff Publications

No abstract provided.


Reconnaissance Water Quality Study Of The Dakota Aquifer In Lancaster County, Nebraska, J. Anderson, D. D. Gosselin Jan 1999

Reconnaissance Water Quality Study Of The Dakota Aquifer In Lancaster County, Nebraska, J. Anderson, D. D. Gosselin

Conservation and Survey Division: Faculty and Staff Publications

No abstract provided.


Groundwater-Level Changes In Nebraska, Predevelopment To Spring 1997/Registered Irrigation Wells In Nebraska-Spring 1997, Conservation Survey Division, Jennifer Stanton, Ann Mack, Jim Weir Jan 1999

Groundwater-Level Changes In Nebraska, Predevelopment To Spring 1997/Registered Irrigation Wells In Nebraska-Spring 1997, Conservation Survey Division, Jennifer Stanton, Ann Mack, Jim Weir

Conservation and Survey Division: Faculty and Staff Publications

No abstract provided.


Acres Irrigated In Nebraska - Past, Present, And Future, Bryce B. Pease Jan 1999

Acres Irrigated In Nebraska - Past, Present, And Future, Bryce B. Pease

Conservation and Survey Division: Faculty and Staff Publications

No abstract provided.


Groundwater-Level Changes In Nebraska, 1996, Abraham H. Chen, Mohan J. Khisty Jan 1999

Groundwater-Level Changes In Nebraska, 1996, Abraham H. Chen, Mohan J. Khisty

Conservation and Survey Division: Faculty and Staff Publications

No abstract provided.


Stanton County Test Hole Logs, Sue Olafsen Lackey, Frank A. Smith, Raymond R. Burchett Jan 1999

Stanton County Test Hole Logs, Sue Olafsen Lackey, Frank A. Smith, Raymond R. Burchett

Conservation and Survey Division: Faculty and Staff Publications

No abstract provided.


Resource Notes-Academic Year 1998-99 Jan 1999

Resource Notes-Academic Year 1998-99

Conservation and Survey Division: Faculty and Staff Publications

No abstract provided.


Resource News-Spring 1999 Jan 1999

Resource News-Spring 1999

Conservation and Survey Division: Faculty and Staff Publications

No abstract provided.


New Caribbean Locality For The Extinct Great White Shark Carcharodon, Clare Flemming, Donald A. Mcfarlane Dec 1998

New Caribbean Locality For The Extinct Great White Shark Carcharodon, Clare Flemming, Donald A. Mcfarlane

WM Keck Science Faculty Papers

Carcharodon is represented by a single upper tooth (Fig. 1) which we extracted from the eroding Pliocene limestone wall, some six meters above the floor at the northern end of Darby Sink. Much of the tooth is missing, but the remaining portion includes features diagnostic of this genus. The tooth conforms in size and morphology to Carcharodon megalodon (Agassiz, 1843), an extinct great white shark.


A Second Pre-Wisconsinan Locality For The Extinct Jamaican Rodent, Clidomys (Rodentia: Heptaxodontidae), Donald A. Mcfarlane, Joyce Lundberg, Clare Flemming, Ross D. E. Macphee, Stein-Erik Lauritzen Dec 1998

A Second Pre-Wisconsinan Locality For The Extinct Jamaican Rodent, Clidomys (Rodentia: Heptaxodontidae), Donald A. Mcfarlane, Joyce Lundberg, Clare Flemming, Ross D. E. Macphee, Stein-Erik Lauritzen

WM Keck Science Faculty Papers

Clidomys is the most distinctive but least well known member of the late Quaternary terrestrial mammal fauna of Jamaica. Here we report the second dated locality for this genus. The Illinoisan age we report further strengthens arguments we have made elsewhere, that Clidomys represents an early - probably pre-Wisconsinan - extinction that contrasts with the growing record of Holocene extinctions in the Antilles.


An Atlas Of The Sand Hills, Ann S. Bleed, Charles A. Flowerday May 1998

An Atlas Of The Sand Hills, Ann S. Bleed, Charles A. Flowerday

Conservation and Survey Division: Faculty and Staff Publications

The Sand Hills region, approximately 19,300 square miles of sand dunes stretching 265 miles across Nebraska and into South Dakota, is the largest sand-dune area in the Western Hemisphere and is one of the largest grass-stabilized dune regions in the world.


A Paleoenvironmental Study Of A Middle Wisconsinan Biota Site, Russell County, Virginia, Thomas C. Wynn Apr 1998

A Paleoenvironmental Study Of A Middle Wisconsinan Biota Site, Russell County, Virginia, Thomas C. Wynn

OES Theses and Dissertations

The study area lies in a first-order valley on the northwestern slope of Clinch Mountain that drains into Moccasin Creek. The deposit is 50 m long, 25 m wide and approximately 10 m thick and overlies the Ordovician Moccasin Formation. Preserved within the deposit are mammoth and mastodon bones, logs, and plant macrofossils. Radiocarbon analyses indicate the age of the organic-rich sediments ranges from 29, I 00 BP to >44,000 BP, a time period with no fossil remains reported in this region of the Appalachians. Analyses of field observations, textural data, organic carbon content, and plant macrofossils indicate the organic-rich …


Resource Notes-Academic Year 1997-98 Jan 1998

Resource Notes-Academic Year 1997-98

Conservation and Survey Division: Faculty and Staff Publications

No abstract provided.


South Central Nebraska Geology Field Trip Conservation And Survey Division-Ianr-Unl & Nebraska Well Drillers Association, Conservation Survey Division Jan 1998

South Central Nebraska Geology Field Trip Conservation And Survey Division-Ianr-Unl & Nebraska Well Drillers Association, Conservation Survey Division

Conservation and Survey Division: Faculty and Staff Publications

No abstract provided.


Estimation Of Suspended Sediment Concentration In Water Using Integrated Surface Reflectance, Mahtab A. Lodhi, Donald C. Rundquist, Luoheng Han, Mark S. Kuzila Jan 1998

Estimation Of Suspended Sediment Concentration In Water Using Integrated Surface Reflectance, Mahtab A. Lodhi, Donald C. Rundquist, Luoheng Han, Mark S. Kuzila

Conservation and Survey Division: Faculty and Staff Publications

No abstract provided.