Polyorogenic history of the East Greenland Caledonides
The Caledonian orogen of East Greenland contains remnants of Archean, Paleoproterozoic, late Mesoproterozoic, and early Neoproterozoic rocks that occur within far-traveled thrust sheets, and bear witness to a complex polyorogenic history of the region prior to Caledonian orogenesis. Archean and Pale...
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ftanucanberra:oai:openresearch-repository.anu.edu.au:1885/82557 2024-01-14T10:04:41+01:00 Polyorogenic history of the East Greenland Caledonides Kalsbeek, Feiko Thrane, Kristine Higgins, A K Jepsen, H Leslie, A Nutman, Allen Frei, Robert http://hdl.handle.net/1885/82557 https://openresearch-repository.anu.edu.au/bitstream/1885/82557/5/Nutman_2008_polyorogenic_Caledonides.pdf.jpg https://openresearch-repository.anu.edu.au/bitstream/1885/82557/7/01_Kalsbeek_Polyorogenic_history_of_the_2008.pdf.jpg unknown Geological Society of America 0072-1069 http://hdl.handle.net/1885/82557 10.1130/2008.1202(03) https://openresearch-repository.anu.edu.au/bitstream/1885/82557/5/Nutman_2008_polyorogenic_Caledonides.pdf.jpg https://openresearch-repository.anu.edu.au/bitstream/1885/82557/7/01_Kalsbeek_Polyorogenic_history_of_the_2008.pdf.jpg Geological Society of America. Memoirs Keywords: Archean Caledonian orogeny deformation mechanism foreland basin geochemistry geochronology metamorphism metasedimentary rock orogeny orthogneiss overprinting Proterozoic structural geology tectonic evolution thrust fault Arctic East Greenl Caledonian orogen East Greenland Grenvillian granites Mesoproterozoic supracrustal rocks Paleoproterozoic basement Journal article ftanucanberra 2023-12-15T09:35:10Z The Caledonian orogen of East Greenland contains remnants of Archean, Paleoproterozoic, late Mesoproterozoic, and early Neoproterozoic rocks that occur within far-traveled thrust sheets, and bear witness to a complex polyorogenic history of the region prior to Caledonian orogenesis. Archean and Paleoproterozoic complexes consist mainly of granitoid orthogneisses. A succession of Paleoproterozoic tholeiitic metabasalts is present in some of the foreland windows. A major unit of late Mesoprotero zoic metasedimentary rocks (Krummedal supracrustal sequence) contains early Neoproterozoic (ca. 950 Ma) as well as Caledonian granites. There is evidence for Archean (ca. 2800-2600 Ma), Paleoproterozoic (2000-1750 Ma), and late Grenvillian (ca. 950 Ma) deformation and metamorphism, but Caledonian overprinting complicates the study of these events. This paper presents a broad overview of the various rock units with structural, geochemical, and geochronologic data. The Paleoproterozoic metabasaltic rocks from the foreland windows are described in more detail. Article in Journal/Newspaper Arctic East Greenland Greenland Australian National University: ANU Digital Collections Arctic Greenland |
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Open Polar |
collection |
Australian National University: ANU Digital Collections |
op_collection_id |
ftanucanberra |
language |
unknown |
topic |
Keywords: Archean Caledonian orogeny deformation mechanism foreland basin geochemistry geochronology metamorphism metasedimentary rock orogeny orthogneiss overprinting Proterozoic structural geology tectonic evolution thrust fault Arctic East Greenl Caledonian orogen East Greenland Grenvillian granites Mesoproterozoic supracrustal rocks Paleoproterozoic basement |
spellingShingle |
Keywords: Archean Caledonian orogeny deformation mechanism foreland basin geochemistry geochronology metamorphism metasedimentary rock orogeny orthogneiss overprinting Proterozoic structural geology tectonic evolution thrust fault Arctic East Greenl Caledonian orogen East Greenland Grenvillian granites Mesoproterozoic supracrustal rocks Paleoproterozoic basement Kalsbeek, Feiko Thrane, Kristine Higgins, A K Jepsen, H Leslie, A Nutman, Allen Frei, Robert Polyorogenic history of the East Greenland Caledonides |
topic_facet |
Keywords: Archean Caledonian orogeny deformation mechanism foreland basin geochemistry geochronology metamorphism metasedimentary rock orogeny orthogneiss overprinting Proterozoic structural geology tectonic evolution thrust fault Arctic East Greenl Caledonian orogen East Greenland Grenvillian granites Mesoproterozoic supracrustal rocks Paleoproterozoic basement |
description |
The Caledonian orogen of East Greenland contains remnants of Archean, Paleoproterozoic, late Mesoproterozoic, and early Neoproterozoic rocks that occur within far-traveled thrust sheets, and bear witness to a complex polyorogenic history of the region prior to Caledonian orogenesis. Archean and Paleoproterozoic complexes consist mainly of granitoid orthogneisses. A succession of Paleoproterozoic tholeiitic metabasalts is present in some of the foreland windows. A major unit of late Mesoprotero zoic metasedimentary rocks (Krummedal supracrustal sequence) contains early Neoproterozoic (ca. 950 Ma) as well as Caledonian granites. There is evidence for Archean (ca. 2800-2600 Ma), Paleoproterozoic (2000-1750 Ma), and late Grenvillian (ca. 950 Ma) deformation and metamorphism, but Caledonian overprinting complicates the study of these events. This paper presents a broad overview of the various rock units with structural, geochemical, and geochronologic data. The Paleoproterozoic metabasaltic rocks from the foreland windows are described in more detail. |
format |
Article in Journal/Newspaper |
author |
Kalsbeek, Feiko Thrane, Kristine Higgins, A K Jepsen, H Leslie, A Nutman, Allen Frei, Robert |
author_facet |
Kalsbeek, Feiko Thrane, Kristine Higgins, A K Jepsen, H Leslie, A Nutman, Allen Frei, Robert |
author_sort |
Kalsbeek, Feiko |
title |
Polyorogenic history of the East Greenland Caledonides |
title_short |
Polyorogenic history of the East Greenland Caledonides |
title_full |
Polyorogenic history of the East Greenland Caledonides |
title_fullStr |
Polyorogenic history of the East Greenland Caledonides |
title_full_unstemmed |
Polyorogenic history of the East Greenland Caledonides |
title_sort |
polyorogenic history of the east greenland caledonides |
publisher |
Geological Society of America |
url |
http://hdl.handle.net/1885/82557 https://openresearch-repository.anu.edu.au/bitstream/1885/82557/5/Nutman_2008_polyorogenic_Caledonides.pdf.jpg https://openresearch-repository.anu.edu.au/bitstream/1885/82557/7/01_Kalsbeek_Polyorogenic_history_of_the_2008.pdf.jpg |
geographic |
Arctic Greenland |
geographic_facet |
Arctic Greenland |
genre |
Arctic East Greenland Greenland |
genre_facet |
Arctic East Greenland Greenland |
op_source |
Geological Society of America. Memoirs |
op_relation |
0072-1069 http://hdl.handle.net/1885/82557 10.1130/2008.1202(03) https://openresearch-repository.anu.edu.au/bitstream/1885/82557/5/Nutman_2008_polyorogenic_Caledonides.pdf.jpg https://openresearch-repository.anu.edu.au/bitstream/1885/82557/7/01_Kalsbeek_Polyorogenic_history_of_the_2008.pdf.jpg |
_version_ |
1788059175297744896 |