Lyell Collection
Journal of the Geological Society
Lyell Centre  |   Lyell Collection  |   Subscriptions   |   Geological Society  |   Email alerts  |   Online bookshop  |   Help

Keywords:
Author:
Advanced search>>
This Article
Right arrow Figures Only
Right arrow Full Text
Right arrow Full Text (PDF)
Right arrow Alert me when this article is cited
Right arrow Alert me if a correction is posted
Right arrow Citation Map
Services
Right arrow Email this article to a friend
Right arrow Similar articles in this journal
Right arrow Alert me to new issues of the journal
Right arrow Download to citation manager
Right arrow Request Permissions
Citing Articles
Right arrow Citing Articles via HighWire
Right arrow Citing Articles via ISI Web of Science (3)
Right arrow Citing Articles via Google Scholar
Google Scholar
Right arrow Articles by Connelly, J. N.
Right arrow Articles by Garde, A. A.
Right arrow Search for Related Content
GeoRef
Right arrow GeoRef Citation
Journal of the Geological Society; 2006; v. 163; issue.2; p. 319-335;
DOI: 10.1144/0016-764904-115
© 2006 Geological Society of London

Original Article

Linking the Palaeoproterozoic Nagssugtoqidian and Rinkian orogens through the Disko Bugt region of West Greenland

James N. Connelly1, Kristine Thrane2, Adam W. Krawiec1 & Adam A. Garde3

1 1Department of Geological Sciences, The University of Texas at Austin, 1 University Station, Austin, TX 78712-0254, USA (e-mail: connelly@mail.utexas.edu)
2 2Geological Institute, University of Copenhagen, Øster Voldgade 10, 1350 Copenhagen K, Denmark
3 3Geological Survey of Denmark and Greenland, Øster Voldgade 10, 1350 Copenhagen K, Denmark

The parallel Trans-Hudson-aged Nagssugtoqidian Orogen and Rinkian Fold Belt of West Greenland have long been considered distinct orogenic belts separated by a zone of low or no Palaeoproterozoic strain in the intervening Disko Bugt region. New U–Pb geochronology confirms the continuity of Palaeoproterozoic deformation and metamorphism through this region, thereby directly linking the Nagssugtoqidian Orogen and Rinkian Fold Belt. Furthermore, two newly identified Archaean blocks in this region are interpreted to represent the southern and northern extensions of the Rae and North Atlantic cratons, respectively. Their boundary comprises a 15 km wide belt of distributed, NW-vergent ductile thrusts that deform ultramafic pods and is interpreted to represent the main collisional suture of a single, variably exhumed, >1100 km wide Nagssugtoqidian–Rinkian orogenic system. We conclude that Palaeoproterozoic convergence of a northern Archaean craton carried a south-facing passive margin sedimentary sequence (Karrat Group) towards a south-dipping subduction zone along the North Atlantic Craton. Terminal collision created a high-grade core centred on the magmatic arc of the central Nagssugtoqidian Orogen and a NW-vergent fold and thrust belt in the Rinkian Fold Belt.




This article has been cited by other articles:


Home page
 Can MineralHome page
M. T. Hutchison and L. M. Heaman
CHEMICAL AND PHYSICAL CHARACTERISTICS OF DIAMOND CRYSTALS FROM GARNET LAKE, SARFARTOQ, WEST GREENLAND: AN ASSOCIATION WITH CARBONATITIC MAGMATISM
Can Mineral, 2008; 46: 1063 - 1078.
[Abstract] [Full Text] [PDF]

Home page
 Journal of the Geological SocietyHome page
T.S. ROhr, T. Andersen, and H. Dypvik
Provenance of Lower Cretaceous sediments in the Wandel Sea Basin, North Greenland
Journal of the Geological Society, 2008; 165: 755 - 767.
[Abstract] [Full Text] [PDF]