Time scales and processes of Cordilleran batholith construction and high-Sr/Y magmatic pulses; evidence from the Bald Mountain Batholith, northeastern Oregon

Cordilleran granitic batholiths (sensu lato) preserve information about time scales and processes of upper crustal magmatic arc construction during Mesozoic subduction and mountain building. The Bald Mountain batholith in northeastern Oregon (USA) is a classic example of a composite, incrementally c...

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Veröffentlicht in:	Geosphere (Boulder, Colo.) Colo.), 2014-12, Vol.10 (6), p.1456-1481
Hauptverfasser:	Schwartz, Joshua J, Johnson, Kenneth, Mueller, Paul, Valley, John, Strickland, Ariel, Wooden, Joseph L
Format:	Artikel
Sprache:	eng
Schlagworte:	absolute age alkaline earth metals Bald Mountain Batholith Batholiths concentration Construction Crusts dates diorites emplacement gabbros Geochemistry Geochronology granites granodiorites hafnium Hf-177/Hf-176 igneous and metamorphic rocks igneous rocks intrusions isotope ratios isotopes Jurassic Magma magmatism major elements Melting Mesozoic metals Mountains nesosilicates norite North America North American Cordillera northeastern Oregon O-18/O-16 Oregon orthosilicates oxygen Petrology plutonic rocks rare earths rock, sediment, soil silicates Sr-87/Sr-86 stable isotopes strontium tonalite trace elements U/Pb United States wall rocks yttrium Zircon zircon group
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