Jim Budahn
Jim Budahn is a Scientist Emeritus with the Geosciences and Environmental Change Science Center
Science and Products
Filter Total Items: 61
Compelling new evidence for Paleocene dinosaurs in the Ojo Alamo Sandstone, San Juan Basin, New Mexico and Colorado, USA Compelling new evidence for Paleocene dinosaurs in the Ojo Alamo Sandstone, San Juan Basin, New Mexico and Colorado, USA
No abstract available.
Authors
James E. Fassett, Spencer G. Lucas, Robert A. Zielinski, James R. Budahn
Active evaporite tectonics and collapse in the Eagle River valley and the southwestern flank of the White River uplift, Colorado Active evaporite tectonics and collapse in the Eagle River valley and the southwestern flank of the White River uplift, Colorado
This field trip presents field evidence for Neogene evaporite tectonism, dissolution of evaporates, and related collapse in Eagle River valley and along the southwestern flank of the White River uplift. In the Eagle collapse center, Pennsylvanian evaporite flowed to form anticlinal diapirs, dissolved, and disrupted a lower Miocene basaltic plateau originally at elevations as high as 3.35...
Authors
R. B. Scott, D. J. Lidke, M.R. Hudson, W. J. Perry, Bruce Bryant, Michael J. Kunk, J. R. Budahn, F.M. Byers
Elemental analyses of modern dust in southern Nevada and California Elemental analyses of modern dust in southern Nevada and California
Selected samples of modern dust collected in marble traps at sites in southern Nevada and California (Reheis and Kihl, 1995; Reheis, 1997) have been analyzed for elemental composition using instrumental neutron activation analysis (INAA) and inductively coupled plasma atomic emission spectroscopy (ICP-AES) and inductively coupled plasma mass spectroscopy (ICP-MS). For information on...
Authors
M.C. Reheis, J. R. Budahn, P. J. Lamothe
Radionuclides in fly ash and bottom ash: Improved characterization based on radiography and low energy gamma-ray spectrometry Radionuclides in fly ash and bottom ash: Improved characterization based on radiography and low energy gamma-ray spectrometry
Two radiation-based techniques for determining the distribution and relative abundance of radionuclides are described, and applied to a suite of fly ash and bottom ash samples from a Kentucky power plant. The technique of fission-track radiography provides new observations of the variety of uranium hosts and of uranium distribution in individual particles of fly ash, and thus aids...
Authors
Robert A. Zielinski, James R. Budahn
Influence of stretching and density contrasts on the chemical evolution of continental magmas: An example from the Ivrea-Verbano Zone Influence of stretching and density contrasts on the chemical evolution of continental magmas: An example from the Ivrea-Verbano Zone
The southern Ivrea-Verbano Zone of the Italian Western Alps contains a huge mafic complex that intruded high-grade metamorphic rocks while they were resident in the lower crust. Geologic mapping and chemical variations of the igneous body were used to study the evolution of underplated crust. Slivers of crustal rocks (septa) interlayered with igneous mafic rocks are concentrated in a...
Authors
S. Sinigoi, J. E. Quick, A. Mayer, J. Budahn
Science and Products
Filter Total Items: 61
Compelling new evidence for Paleocene dinosaurs in the Ojo Alamo Sandstone, San Juan Basin, New Mexico and Colorado, USA Compelling new evidence for Paleocene dinosaurs in the Ojo Alamo Sandstone, San Juan Basin, New Mexico and Colorado, USA
No abstract available.
Authors
James E. Fassett, Spencer G. Lucas, Robert A. Zielinski, James R. Budahn
Active evaporite tectonics and collapse in the Eagle River valley and the southwestern flank of the White River uplift, Colorado Active evaporite tectonics and collapse in the Eagle River valley and the southwestern flank of the White River uplift, Colorado
This field trip presents field evidence for Neogene evaporite tectonism, dissolution of evaporates, and related collapse in Eagle River valley and along the southwestern flank of the White River uplift. In the Eagle collapse center, Pennsylvanian evaporite flowed to form anticlinal diapirs, dissolved, and disrupted a lower Miocene basaltic plateau originally at elevations as high as 3.35...
Authors
R. B. Scott, D. J. Lidke, M.R. Hudson, W. J. Perry, Bruce Bryant, Michael J. Kunk, J. R. Budahn, F.M. Byers
Elemental analyses of modern dust in southern Nevada and California Elemental analyses of modern dust in southern Nevada and California
Selected samples of modern dust collected in marble traps at sites in southern Nevada and California (Reheis and Kihl, 1995; Reheis, 1997) have been analyzed for elemental composition using instrumental neutron activation analysis (INAA) and inductively coupled plasma atomic emission spectroscopy (ICP-AES) and inductively coupled plasma mass spectroscopy (ICP-MS). For information on...
Authors
M.C. Reheis, J. R. Budahn, P. J. Lamothe
Radionuclides in fly ash and bottom ash: Improved characterization based on radiography and low energy gamma-ray spectrometry Radionuclides in fly ash and bottom ash: Improved characterization based on radiography and low energy gamma-ray spectrometry
Two radiation-based techniques for determining the distribution and relative abundance of radionuclides are described, and applied to a suite of fly ash and bottom ash samples from a Kentucky power plant. The technique of fission-track radiography provides new observations of the variety of uranium hosts and of uranium distribution in individual particles of fly ash, and thus aids...
Authors
Robert A. Zielinski, James R. Budahn
Influence of stretching and density contrasts on the chemical evolution of continental magmas: An example from the Ivrea-Verbano Zone Influence of stretching and density contrasts on the chemical evolution of continental magmas: An example from the Ivrea-Verbano Zone
The southern Ivrea-Verbano Zone of the Italian Western Alps contains a huge mafic complex that intruded high-grade metamorphic rocks while they were resident in the lower crust. Geologic mapping and chemical variations of the igneous body were used to study the evolution of underplated crust. Slivers of crustal rocks (septa) interlayered with igneous mafic rocks are concentrated in a...
Authors
S. Sinigoi, J. E. Quick, A. Mayer, J. Budahn