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Articles 1 - 30 of 51
Full-Text Articles in Geomorphology
New Kinematic Models For Pacific‐North America Motion From 3 Ma To Present, Ii: Evidence For A “Baja California Shear Zone”, Timothy Dixon, Fred Farina, Charles Demets, Francisco Suarez-Vidal, John Fletcher, Bertha Marquez-Azua, M. Meghan Miller, Osvaldo Sanchez, Paul Umhoefer
New Kinematic Models For Pacific‐North America Motion From 3 Ma To Present, Ii: Evidence For A “Baja California Shear Zone”, Timothy Dixon, Fred Farina, Charles Demets, Francisco Suarez-Vidal, John Fletcher, Bertha Marquez-Azua, M. Meghan Miller, Osvaldo Sanchez, Paul Umhoefer
All Faculty Scholarship for the College of the Sciences
We use new models for present‐day Pacific‐North America motion to evaluate the tectonics of offshore regions west of the Californias. Vandenburg in coastal Alta California moves at the Pacific plate velocity within uncertainties (∼1 mm/yr) after correcting for strain accumulation on the San Andreas and San Gregorio‐Hosgri faults with a model that includes a viscoelastic lower crust. Modeled and measured velocities at coastal sites in Baja California south of the Agua Blanca fault, a region that most previous models consider Pacific plate, differ by 3–8 mm/yr, with coastal sites moving slower that the Pacific plate. We interpret these discrepancies in …
Field Trip Guide (For The Nebraska Well Drillers Association) Eastern Nebraska Geology, Scott Summerside, Duane Eversoll, Mark Kuzila, Matt Joeckel
Field Trip Guide (For The Nebraska Well Drillers Association) Eastern Nebraska Geology, Scott Summerside, Duane Eversoll, Mark Kuzila, Matt Joeckel
Conservation and Survey Division
No abstract provided.
Arthur County Test-Hole Logs: Nebraska Water Survey Test-Hole Report No. 3, Robert F. Diffendal Jr., James W. Goeke
Arthur County Test-Hole Logs: Nebraska Water Survey Test-Hole Report No. 3, Robert F. Diffendal Jr., James W. Goeke
Robert F. Diffendal, Jr., Publications
In 1930, the Conservation and Survey Division (CSD) of the University of Nebraska and the United States Geological Survey began a program of cooperative groundwater studies in Nebraska. Since then test drilling by use of rotary drilling equipment has been an integral part of that program. This report contains logs of all the test holes drilled in Arthur County under the program as well as those drilled by the Conservation and Survey Division with financial assistance from other government agencies.
The maps in this report show the locations of all test holes drilled in the county since 1934.
Present techniques …
Environmental Survey Of Potential Sand Resource Sites, Offshore Delaware And Maryland : Final Report, Virginia Institute Of Marine Science
Environmental Survey Of Potential Sand Resource Sites, Offshore Delaware And Maryland : Final Report, Virginia Institute Of Marine Science
Reports
- Technical summary / Carl H. Hobbs
- Non-technical summary / Carl H. Hobbs
- Part. 1. Benthic mapping and resource evaluation of potential sand mining areas, offshore Mayland and Delaware, 1998-1999 / G.R. Cutter and R.J. Diaz
- Part. 2. Transitory species (vertebrate nekton) / John A. Musick
- Part. 3. Literature survey of reproductive finfish and ichthyoplankton present in proposed sand mining locations within the Middle Atlantic Bight / John Olney, Donna Marie Bilkovic
- Part. 4. Potential modifications to waves due to dredging and other oceanographic considerations / Jerome P.-Y. Maa, Sung C. Kim
- Part. 5. Maryland-Delaware shoreline : long-term trends and short-term …
Keith County Test-Hole Logs: Nebraska Water Survey Test-Hole Report No. 51, Robert F. Diffendal Jr., James W. Goeke
Keith County Test-Hole Logs: Nebraska Water Survey Test-Hole Report No. 51, Robert F. Diffendal Jr., James W. Goeke
Robert F. Diffendal, Jr., Publications
In 1930, the Conservation and Survey Division (CSD) of the University of Nebraska and the U.S. Geological Survey began a program of cooperative groundwater studies in Nebraska. Since then test drilling by use of rotary drilling equipment has been an integral part of that program. This report contains logs of all the test holes drilled in the county under the program as well as those drilled by the Conservation and Survey Division with financial assistance from other government agencies.
The maps in this report show the locations of all test holes drilled in the county since 1934 (Figure la–d).
Present …
Field Trip Guide For The Upper Republican And Middle Republican Nrd's Southwestern Nebraska Geology And Soils, Duane Eversoll, Jim Goeke, Mark Kuzila
Field Trip Guide For The Upper Republican And Middle Republican Nrd's Southwestern Nebraska Geology And Soils, Duane Eversoll, Jim Goeke, Mark Kuzila
Conservation and Survey Division
No abstract provided.
Present‐Day Motion Of The Sierra Nevada Block And Some Tectonic Implications For The Basin And Range Province, North American Cordillera, Timothy H. Dixon, M. Meghan Miller, Frederic Farina, Hongzhi Wang, Daniel Johnson
Present‐Day Motion Of The Sierra Nevada Block And Some Tectonic Implications For The Basin And Range Province, North American Cordillera, Timothy H. Dixon, M. Meghan Miller, Frederic Farina, Hongzhi Wang, Daniel Johnson
All Faculty Scholarship for the College of the Sciences
Global Positioning System (GPS) data from five sites on the stable interior of the Sierra Nevada block are inverted to describe its angular velocity relative to stable North America. The velocity data for the five sites fit the rigid block model with rms misfits of 0.3 mm/yr (north) and 0.8 mm/yr (east), smaller than independently estimated data uncertainty, indicating that the rigid block model is appropriate. The new Euler vector, 17.0°N, 137.3°W, rotation rate 0.28 degrees per million years, predicts that the block is translating to the northwest, nearly parallel to the plate motion direction, at 13–14 mm/yr, faster than …
Upper Elkhorn Natural Resources District Cooperative Agreement, Field Summary Report 1998-1999, Susan Olafsen Lackey
Upper Elkhorn Natural Resources District Cooperative Agreement, Field Summary Report 1998-1999, Susan Olafsen Lackey
Conservation and Survey Division
No abstract provided.
Lower Elkhorn Natural Resources District Cooperative Agreement, Field Summary Report 1998-1999, Susan Olafsen Lackey
Lower Elkhorn Natural Resources District Cooperative Agreement, Field Summary Report 1998-1999, Susan Olafsen Lackey
Conservation and Survey Division
No abstract provided.
Hayes County Test Hole Logs, Duane A. Eversoll
Hayes County Test Hole Logs, Duane A. Eversoll
Conservation and Survey Division
No abstract provided.
Oregon Trail/Other Points Of Interest In Nebraska, University Of Nebraska - Lincoln
Oregon Trail/Other Points Of Interest In Nebraska, University Of Nebraska - Lincoln
Conservation and Survey Division
No abstract provided.
Groundwater-Level Changes In Nebraska Predevelopment To 1954, University Of Nebraska - Lincoln
Groundwater-Level Changes In Nebraska Predevelopment To 1954, University Of Nebraska - Lincoln
Conservation and Survey Division
No abstract provided.
The Effect Of Rock Creep On The Morphology Of Steep-Sloped Sections Of The Niagara Escarpment (Ontario), John Barlow
The Effect Of Rock Creep On The Morphology Of Steep-Sloped Sections Of The Niagara Escarpment (Ontario), John Barlow
Theses and Dissertations (Comprehensive)
The thesis addresses the post-glacial development of the Niagara Cuesta between Hamilton and Collingwood. Conventional thinking on the escarpment during the Holocene suggests that the present morphology developed rapidly following deglaciation due to periglacial processes (Straw, 1966/Tovell 1992). The disruption of the preglacial drainage pattern by drift has meant the escarpment has not been subject to extensive fluvial action along its base, resulting in an extremely slow rate of retreat (Bird, 1980). The concept that the escarpment is a relict feature therefore pervades the modem literature. The apparent motion of the blocks at the face of the escarpment (Hintz, I997) …
Dakota County Test Hole Logs, Raymond R. Burchett, Frank A. Smith
Dakota County Test Hole Logs, Raymond R. Burchett, Frank A. Smith
Conservation and Survey Division
No abstract provided.
Arthur County Test Hole Logs, Robert F. Diffendal Jr., James W. Goeke
Arthur County Test Hole Logs, Robert F. Diffendal Jr., James W. Goeke
Conservation and Survey Division
Arthur County, Nebraska test hole logs (2000).
Rock County Test Hole Logs, Susan Olafsen Lackey, Frank A. Smith, Keonard R. Borcya
Rock County Test Hole Logs, Susan Olafsen Lackey, Frank A. Smith, Keonard R. Borcya
Conservation and Survey Division
No abstract provided.
Resource Notes-Academic Year 1999-2000
Resource Notes-Academic Year 1999-2000
Conservation and Survey Division
No abstract provided.
Principal Meridians Of The Federal System Of Rectangular Surveys, Bureau Of Land Management
Principal Meridians Of The Federal System Of Rectangular Surveys, Bureau Of Land Management
Conservation and Survey Division
No abstract provided.
Land Cover Trends Dataset, 1973–2000, Christopher E. Soulard, William Acevedo, Roger F. Auch, Terry L. Sohl, Mark A. Drummond, Benjamin M. Sleeter, Daniel G. Sorenson, Steve Kambly, Tamara S. Wilson, Janis L. Taylor, Kristi L. Sayler, Michael P. Stier, Christopher A. Barnes, Steve C. Methven, Thomas R. Loveland, Rachel Headley, Mark S. Brooks
Land Cover Trends Dataset, 1973–2000, Christopher E. Soulard, William Acevedo, Roger F. Auch, Terry L. Sohl, Mark A. Drummond, Benjamin M. Sleeter, Daniel G. Sorenson, Steve Kambly, Tamara S. Wilson, Janis L. Taylor, Kristi L. Sayler, Michael P. Stier, Christopher A. Barnes, Steve C. Methven, Thomas R. Loveland, Rachel Headley, Mark S. Brooks
Publications of the US Geological Survey
The U.S. Geological Survey Land Cover Trends Project is releasing a 1973–2000 time-series land-use/land-cover dataset for the conterminous United States. The dataset contains 5 dates of land-use/land-cover data for 2,688 sample blocks randomly selected within 84 ecological regions. The nominal dates of the land-use/land-cover maps are 1973, 1980, 1986, 1992, and 2000. The land-use/land-cover maps were classified manually from Landsat Multispectral Scanner, Thematic Mapper, and Enhanced Thematic Mapper Plus imagery using a modified Anderson Level I classification scheme. The resulting land-use/land-cover data has a 60-meter resolution and the projection is set to Albers Equal-Area Conic, North American Datum of 1983. …
Groundwater-Level Changes In Nebraska - Spring 1999 To Spring 2000, Conservation Survey Division
Groundwater-Level Changes In Nebraska - Spring 1999 To Spring 2000, Conservation Survey Division
Conservation and Survey Division
No abstract provided.
Field Trip Guide For The Upper Republican And Middle Republican Nrd's Southwestern Nebraska Geology And Soils, D. A. Eversoll, J. W. Goeke, M. Kuzila
Field Trip Guide For The Upper Republican And Middle Republican Nrd's Southwestern Nebraska Geology And Soils, D. A. Eversoll, J. W. Goeke, M. Kuzila
Conservation and Survey Division
No abstract provided.
Field Trip Guide (For The Nebraska Well Drillers Association) Eastern Nebraska Geology, S. Summerside, D. A. Eversoll, M. Kuzila, M. Joeckel
Field Trip Guide (For The Nebraska Well Drillers Association) Eastern Nebraska Geology, S. Summerside, D. A. Eversoll, M. Kuzila, M. Joeckel
Conservation and Survey Division
No abstract provided.
Late Quaternary Landscape Evolution In The South Fork Of The Big Nemaha River Valley, Southeastern Nebraska And Northeastern Kansas, Rolfe D. Mandel, E. Arthur Bettis Iii, Richard G. Baker, Glen G. Fredlund, Jeremy S. Dillon
Late Quaternary Landscape Evolution In The South Fork Of The Big Nemaha River Valley, Southeastern Nebraska And Northeastern Kansas, Rolfe D. Mandel, E. Arthur Bettis Iii, Richard G. Baker, Glen G. Fredlund, Jeremy S. Dillon
Conservation and Survey Division
No abstract provided.
Chase County Test Hole Logs, Vincent H. Dreeszen
Chase County Test Hole Logs, Vincent H. Dreeszen
Conservation and Survey Division
No abstract provided.
Custer County Test Hole Logs, Larry D. Cast
Custer County Test Hole Logs, Larry D. Cast
Conservation and Survey Division
No abstract provided.
Gosper County Test Hole Logs, Larry D. Cast
Gosper County Test Hole Logs, Larry D. Cast
Conservation and Survey Division
No abstract provided.
Garden County Test Hole Logs, Frank A. Smith
Garden County Test Hole Logs, Frank A. Smith
Conservation and Survey Division
No abstract provided.
Frontier County Test Hole Logs, Duane A. Eversoll
Frontier County Test Hole Logs, Duane A. Eversoll
Conservation and Survey Division
No abstract provided.
Jefferson County Test Hole Logs, Raymond R. Burchett, Frank A. Smith
Jefferson County Test Hole Logs, Raymond R. Burchett, Frank A. Smith
Conservation and Survey Division
No abstract provided.