Restoring thrusting in the East Greenland Caledonides

Abstract

Research Article| November 01, 2000 Restoring thrusting in the East Greenland Caledonides A.K. Higgins; A.K. Higgins 1Geological Survey of Denmark and Greenland, Thoravej 8, DK-2400 Copenhagen NV, Denmark Search for other works by this author on: GSW Google Scholar A.G. Leslie A.G. Leslie 2Department of Geology, School of Geosciences, Queen's University of Belfast, Belfast BT7 1NN, Northern Ireland, UK Search for other works by this author on: GSW Google Scholar Author and Article Information A.K. Higgins 1Geological Survey of Denmark and Greenland, Thoravej 8, DK-2400 Copenhagen NV, Denmark A.G. Leslie 2Department of Geology, School of Geosciences, Queen's University of Belfast, Belfast BT7 1NN, Northern Ireland, UK Publisher: Geological Society of America Received: 27 Apr 2000 Revision Received: 17 Aug 2000 Accepted: 21 Aug 2000 First Online: 02 Jun 2017 Online ISSN: 1943-2682 Print ISSN: 0091-7613 Geological Society of America Geology (2000) 28 (11): 1019–1022. https://doi.org/10.1130/0091-7613(2000)28<1019:RTITEG>2.0.CO;2 Article history Received: 27 Apr 2000 Revision Received: 17 Aug 2000 Accepted: 21 Aug 2000 First Online: 02 Jun 2017 Cite View This Citation Add to Citation Manager Share Icon Share Facebook Twitter LinkedIn MailTo Tools Icon Tools Get Permissions Search Site Citation A.K. Higgins, A.G. Leslie; Restoring thrusting in the East Greenland Caledonides. Geology 2000;; 28 (11): 1019–1022. doi: https://doi.org/10.1130/0091-7613(2000)28<1019:RTITEG>2.0.CO;2 Download citation file: Ris (Zotero) Refmanager EasyBib Bookends Mendeley Papers EndNote RefWorks BibTex toolbar search Search Dropdown Menu toolbar search search input Search input auto suggest filter your search All ContentBy SocietyGeology Search Advanced Search Abstract Three principal lithostructural domains are recognized within the southern part (70°–76°N) of the East Greenland Caledonides. At the deepest structural levels, within foreland windows, a thin Neoproterozoic–lower Paleozoic succession unconformably overlies older basement. The foreland is overridden by two major thrust sheets, a lower and an upper thrust sheet. Each of these comprise Paleoproterozoic or older crystalline basement rocks and their metasedimentary cover, and preserve evidence of both a pre-Caledonian (ca. 930 Ma) thermal event and the superimposed Caledonian orogenesis. Transport directions on major thrusts are top-to-the-west-northwest, and restoration of displacements with respect to the foreland windows permits reconstruction of a 500–700-km-wide sector of the pre-Caledonian Laurentian margin. One implication of the reconstruction is that the 18.5-km-thick Neoproterozoic–lower Paleozoic succession preserved in the upper thrust sheet accumulated in a basin that was at least 200 km east of the foreland where the equivalent succession totals only 250–400 m. Scandian (ca. 430 Ma) thrusting resulted in 40%–60% shortening to produce the present ∼300-km-wide orogenic belt in East Greenland. You do not have access to this content, please speak to your institutional administrator if you feel you should have access.