Composite Sunrise Butte pluton: Insights into Jurassic-Cretaceous collisional tectonics and magmatism in the Blue Mountains Province, northeastern Oregon

Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00216208%3A11310%2F15%3A10319721" target="_blank" >RIV/00216208:11310/15:10319721 - isvavai.cz</a>
Result on the web
<a href="http://dx.doi.org/10.1130/2015.2513(10)" target="_blank" >http://dx.doi.org/10.1130/2015.2513(10)</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.1130/2015.2513(10)" target="_blank" >10.1130/2015.2513(10)</a>

Result language
angličtina
Original language name
Composite Sunrise Butte pluton: Insights into Jurassic-Cretaceous collisional tectonics and magmatism in the Blue Mountains Province, northeastern Oregon
Original language description
The composite Sunrise Butte pluton, northeastern Oregon, preserves a record of subduction-related magmatism, arc-arc collision, crustal thickening, and deep-crustal anatexis. The earliest phase of the pluton was generated in a subduction zone -environment, as the oceanic lithosphere between the Wallowa and Olds Ferry island arcs was consumed. Zircons from this unit yielded a 206Pb/238U age of 160.2 +- 2.1 Ma. A magmatic lull ensued during arc-arc collision, after which partial melting at the base of thethickened Wallowa arc crust produced siliceous magma that was emplaced into metasedimentary rocks and serpentinite of the overthrust forearc complex. This magma crystallized to form the bulk of the Sunrise Butte composite pluton. The heat necessary forcrustal anatexis was supplied by coeval mantle-derived magma. The lull in magmatic activity between 160 and 148 Ma encompasses the timing of arc-arc collision. Previous researchers have proposed a tectonic link between the Blue Mountains
Czech name
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Czech description
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Type
J<sub>x</sub> - Unclassified - Peer-reviewed scientific article (Jimp, Jsc and Jost)
CEP classification
DC - Seismology, volcanology and Earth structure
OECD FORD branch
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Project
<a href="/en/project/GAP210%2F12%2F1385" target="_blank" >GAP210/12/1385: Calderas as indicators of thermal-mechanical evolution of subvolcanic magma chambers</a><br>
Continuities
I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Publication year
2015
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

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