Zobrazeno 1 - 10 of 13 pro vyhledávání: '"Clyde J. Northrup"'
1
Geochronology and geochemistry of the Huntington Formation, Olds Ferry terrane, Blue Mountains province, northern U.S. Cordillera: Implications for accreted terrane correlation and assembly
Autor: Bryant Ware, Kyle P. Tumpane, Gene A. Kurz, Mark D. Schmitz, Clyde J. Northrup
Publikováno v: GSA Bulletin. 134:2225-2244
The Olds Ferry terrane is the more inboard of two accreted volcanic arc terranes in the late Paleozoic–early Mesozoic Blue Mountains province of the northern U.S. Cordillera. We present geologic, geochronologic, and geochemical data from the volcan
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::ea14ab6212ed9b6a59f0fd0c2268303a
https://doi.org/10.1130/b36036.1
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2
Sonoma Orogeny—A Reassessment
Autor: Walter S. Snyder, Hannes K. Brueckner, Clyde J. Northrup
The Late Permian to earliest Triassic Sonoma orogeny has long been envisioned as the result of an arc-continent collision that closed the Havallah oceanic basin, creating the Golconda allochthon, which was emplaced eastward onto the western edge of t
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::99918ffd438a8bad8e3b9dea6efc52e4
https://doi.org/10.2110/sepmsp.113.11
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3
Isotopic compositions of intrusive rocks from the Wallowa and Olds Ferry arc terranes of northeastern Oregon and western Idaho: Implications for Cordilleran evolution, lithospheric structure, and Miocene magmatism
Autor: Clyde J. Northrup, Mark D. Schmitz, Tracy L. Vallier, Gene A. Kurz
Publikováno v: Lithosphere. 9:235-264
Late Paleozoic and Mesozoic intrusive rocks from the Wallowa and Olds Ferry arc terranes of the Blue Mountains Province, Oregon-Idaho, provide constraints on the paleogeographic and tectonic setting of magmatism preserved in both arcs. Sr, Nd, and Pb
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::bcd3571b4e1b17a88c4420388704c0ec
https://doi.org/10.1130/l550.1
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5
Strontium isotope zoning in garnet: implications for metamorphic matrix equilibration, geochronology and phase equilibrium modelling
Autor: Matthew J. Kohn, Clyde J. Northrup, Frank S. Spear, Mark D. Schmitz, J. Sousa
Publikováno v: Journal of Metamorphic Geology. 31:437-452
In principle, garnet growth rates may be calculated from 87 Rb/ 86 Sr and 87 Sr/ 86 Sr measurements in garnet subsamples and the surrounding rock matrix. Because of low Rb/Sr, garnet should passively record the matrix decay of 87 Rb to 87 Sr as a pro
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::d29aeac18730950d3515f58c71399d0a
https://doi.org/10.1111/jmg.12028
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6
U-Pb geochronology and geochemistry of intrusive rocks from the Cougar Creek Complex, Wallowa arc terrane, Blue Mountains Province, Oregon-Idaho
Autor: Mark D. Schmitz, Clyde J. Northrup, Gene A. Kurz, Tracy L. Vallier
Publikováno v: Geological Society of America Bulletin. 124:578-595
The Cougar Creek Complex is a compositionally diverse intrusive suite constructed of variably deformed and nondeformed dikes and plutons interpreted as the roots of the Wallowa arc terrane in the Blue Mountains Province, Oregon-Idaho. New high-precis
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::a8b398f3382b8d3ac0c188661ee191dd
https://doi.org/10.1130/b30452.1
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7
Mesozoic magmatism and deformation in the northern Owyhee Mountains, Idaho: Implications for along-zone variations for the western Idaho shear zone
Autor: Basil Tikoff, James L. Crowley, B. Benford, Clyde J. Northrup, Mark D. Schmitz
Publikováno v: Lithosphere. 2:93-118
The northern Owyhee Mountains of southwestern Idaho contain granitoid rocks that are the same age as the Cretaceous western border zone of the Idaho batholith to the north of the Snake River Plain. They contain a well-developed and consistently orien
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::7a63e8b96f517f6a8dc284cc41a13e42
https://doi.org/10.1130/l76.1
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8
Taking mylonites' temperatures
Autor: Matthew J. Kohn, Clyde J. Northrup
Publikováno v: Geology. 37:47-50
We measured titanium-in-quartz (TitaniQ) temperatures by ion microprobe for three deformed rocks having different quartz microstructure to assess the possibility of constrain- ing the temperature of mylonitization directly from dynamically recrystall
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::5eb9abb98cb97fe5f5d52838eef11204
https://doi.org/10.1130/g25081a.1
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9
Structural analysis of mylonitic rocks in the Cougar Creek Complex, Oregon–Idaho using the porphyroclast hyperbolic distribution method, and potential use of SC′-type extensional shear bands as quantitative vorticity indicators
Autor: Clyde J. Northrup, Gene A. Kurz
Publikováno v: Journal of Structural Geology. 30:1005-1012
Mylonitic rocks of the Cougar Creek Complex of northeastern Oregon and west-central Idaho provide an opportunity to document the deformational structures produced during general non-coaxial shear within quartz-feldspar mylonites and to explore the po
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::29a6183c49bf8bfaf0fed2add11c98ba
https://doi.org/10.1016/j.jsg.2008.04.003
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