Very low-grade metamorphism of the Dezadeash Formation (Jura-Cretaceous): Constraints on the tectonometamorphic history of the Dezadeash flysch basin and implications regarding the tectonic evolution of the Northern Cordillera of Alaska and Yukon

• Published in: AIMS Geosciences
• Main Author: Grant W Lowey
• Format: Article in Journal/Newspaper
• Language: English
• Published: AIMS Press 2021
• Subjects: tectonic setting; flysch basin; north american cordillera; gravina-nutzotin belt; dezadeash formation; subgreenschist facies; Geology; QE1-996.5; Dezadeash; Jura; Nutzotin Mountains; Yukon; Alaska
• Online Access: https://doi.org/10.3934/geosci.2021022; https://doaj.org/article/6fa68674a4e748318c49c269c4877f5a

Mesozoic convergence of the Wrangellia composite terrane with the western margin of North America resulted in the collapse of intervening flysch basins. One of these basins, the Jurassic-Cretaceous Gravina-Nuzotin belt, comprises from south to north, the Gravina sequence and Gravina belt in southeas...