Mel Kuntz
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Geologic map of the north half of the Lake Walcott 30'×60' quadrangle, Idaho
The geologic map of the northern half of the Lake Walcott 30ʹ×60ʹ quadrangle shows the volcanic geology of the southern part of the Craters of the Moon lava field, the complex geologic features of the Holocene Kings Bowl and Wapi lava fields, and the southern part of the Great Rift volcanic rift zone. The long extent and distribution of skylights...
Kuntz, Mel A.; Champion, Duane E.; Turrin, Brent R.; Gans, Philip B.; Covington, Harry R.; VanSistine, D. Paco
The timing and origin of pre- and post-caldera volcanism associated with the Mesa Falls Tuff, Yellowstone Plateau volcanic field
We present new sanidine 40Ar/39Ar ages and paleomagnetic data for pre- and post-caldera rhyolites from the second volcanic cycle of the Yellowstone Plateau volcanic field, which culminated in the caldera-forming eruption of the Mesa Falls Tuff at ca. 1.3 Ma. These data allow for a detailed reconstruction of the...
Stelten, Mark E.; Champion, Duane E.; Kuntz, Mel A.
Database for geologic maps of pyroclastic-flow and related deposits of the 1980 eruptions of Mount St. Helens, Washington
This publication releases digital versions of the geologic maps in U.S. Geological Survey Miscellaneous Investigations Map 1950 (USGS I-1950), “Geologic maps of pyroclastic-flow and related deposits of the 1980 eruptions of Mount St. Helens, Washington” (Kuntz, Rowley, and MacLeod, 1990) (https://pubs.er.usgs.gov/publication/i1950). The 1980 Mount...
Furze, Andrew J.; Bard, Joseph A.; Robinson, Joel; Ramsey, David W.; Kuntz, Mel A.; Rowley, Peter D.; MacLeod, Norman S. Magma evolution and ascent at the craters of the moon and neighboring volcanic fields, southern Idaho, USA: Implications for the evolution of polygenetic and monogenetic volcanic fields
The evolution of polygenetic and monogenetic volcanic fields must reflect differences in magma processing during ascent. To assess their evolution we use thermobarometry and geochemistry to evaluate ascent paths for neighboring, nearly coeval volcanic fields in the Snake River Plain, in south-central Idaho, derived from (1) dominantly Holocene...
Putirka, Keith D.; Kuntz, Mel A.; Unruh, Daniel M.; Vaid, Nitin Uranium-Lead Zircon Ages and Sr, Nd, and Pb Isotope Geochemistry of Selected Plutonic Rocks from Western Idaho
Across the Salmon River suture in western Idaho, where allochthonous Permian to Cretaceous oceanic rocks are juxtaposed against Proterozoic North American rocks, a wide variety of plutonic rocks are exposed. Available data indicate much variation in composition, source, and structural state of these plutons. The plutonic rocks were long described...
Unruh, Daniel M.; Lund, Karen; Kuntz, Mel A.; Snee, Lawrence W. Geological studies of the Salmon River suture zone and adjoining areas, west-central Idaho and eastern Oregon
The papers in this volume describe petrologic, structural, and geochemical studies related to geographic areas adjacent to and including the Salmon River suture zone. We therefore start this volume by defining and giving a general description of that suture zone. The western margin of the North American continent was the setting for complex...
Kuntz, Mel A.; Snee, Lawrence W. Geologic map of the Craters of the Moon 30' x 60' Quadrangle, Idaho
The Craters of the Moon 30 x 60 minute quadrangle shows the geology of the northern two-thirds of the Craters of the Moon (COM) lava field and volcanic structures of the northern and central parts of the Great Rift volcanic rift zone. The COM lava field is the largest, predominantly Holocene lava field in the conterminous United States. The...
Kuntz, Mel A.; Skipp, Betty; Champion, Duane E.; Gans, Philip B.; VanSistine, D. Paco; Snyders, Scott R.
Geologic controls of hydraulic conductivity in the Snake River Plain aquifer at and near the Idaho National Engineering and Environmental Laboratory, Idaho
Anderson, S.R.; Kuntz, Mel A.; Davis, Linda C.
Petrography, age, and paleomagnetism of basaltic lava flows in coreholes at Test Area North (TAN), Idaho National Engineering Laboratory
Lanphere, Marvin A.; Champion, Duane E.; Kuntz, Mel A.
Geologic map of the Fissure Butte quadrangle, Blaine and Butte Counties, Idaho
Kuntz, Mel A.; Champion, Duane E.; Lefebvre, Richard H. Geologic map of the Inferno Cone quadrangle, Butte County, Idaho
Kuntz, Mel A.; Lefebvre, R.H.; Champion, D.E.; Skipp, Betty