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

Kód výsledku v 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>

Výsledek na webu

<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>

Jazyk výsledku

angličtina

Název v původním jazyce

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

Popis výsledku v původním jazyce

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

Název v anglickém jazyce

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

Popis výsledku anglicky

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

Druh

J_x - Nezařazeno - Článek v odborném periodiku (Jimp, Jsc a Jost)

CEP obor

DC - Seismologie, vulkanologie a struktura Země

OECD FORD obor

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Projekt

<a href="/cs/project/GAP210%2F12%2F1385" target="_blank" >GAP210/12/1385: Kaldery jako indikátory termálního a mechanického vývoje subvulkanických magmatických krbů</a><br>

Návaznosti

I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Rok uplatnění

2015

Kód důvěrnosti údajů

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Název periodika

Special Paper of the Geological Society of America

ISSN

0072-1077

e-ISSN

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Svazek periodika

neuveden

Číslo periodika v rámci svazku

513

Stát vydavatele periodika

GB - Spojené království Velké Británie a Severního Irska

Počet stran výsledku

23

Strana od-do

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Kód UT WoS článku

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EID výsledku v databázi Scopus

2-s2.0-84937861459