Thermochronology data from Pearya Terrane, Ellesmere Island, North Canadian Margin

DOI

Thermochronology data suggest Eocene high-latitude rapid exhumation and topography formation. Enhanced exhumation of northern Ellesmere Island occurred ~67-59 Ma, ~55-48 Ma, 44-38 Ma, and 34-26 Ma. These exhumation periods largely correlate with changes of spreading rates and movement directions of the Norwegian-Greenland Sea. Main topographic growth along the Eurekan belt was temporally coincident with deposition of ice-rafted debris off eastern Greenland. We suggest that Eurekan topography growth was an important trigger for glacier formation in Greenland. Exhumation of northern Ellesmere Island was episodic and was presumably controlled by strike-slip movements along the De Geer Fracture Zone between Svalbard and Greenland. The cessation of rapid exhumation at ~26 Ma can be explained by continental separation between Greenland and Svalbard, which decoupled northern Ellesmere Island from strike-slip movements along the De Geer Fracture Zone, eventually leading to the opening of the Fram Strait.

Supplement to: Vamvaka, Agni; Pross, Jörg; Monien, Patrick; Piepjohn, Karsten; Estrada, Solveig; Lisker, Frank; Spiegel, Cornelia (2019): Exhuming the top end of North America: Episodic evolution of the Eurekan belt and its potential relationships to North Atlantic plate tectonics and Arctic climate change. Tectonics, 38(12), 4207-4228

Identifier
DOI https://doi.org/10.1594/PANGAEA.905014
Related Identifier https://doi.org/10.1029/2019TC005621
Related Identifier https://store.pangaea.de/Publications/Vamvaka-etal_2019/AFT_data_set-Vamvaka_etal_2019_Tectonics.xlsx
Metadata Access https://ws.pangaea.de/oai/provider?verb=GetRecord&metadataPrefix=datacite4&identifier=oai:pangaea.de:doi:10.1594/PANGAEA.905014
Provenance
Creator Vamvaka, Agni ORCID logo; Pross, Jörg; Monien, Patrick ORCID logo; Piepjohn, Karsten; Estrada, Solveig ORCID logo; Lisker, Frank ORCID logo; Spiegel, Cornelia ORCID logo
Publisher PANGAEA
Publication Year 2019
Rights Creative Commons Attribution 4.0 International; https://creativecommons.org/licenses/by/4.0/
OpenAccess true
Representation
Language English
Resource Type Supplementary Publication Series of Datasets; Collection
Format application/zip
Size 2 datasets
Discipline Earth System Research
Spatial Coverage (-84.436W, 82.156S, -80.792E, 82.502N)