Mesoarchaean orogenic gold mineralization within the Nuuluk Linear Belt, Tartoq Gold Province, South-West Greenland
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Research Article| March 01, 2005 Major orogenic gold episode associated with Cordilleran-style tectonics related to the assembly of Paleoproterozoic Australia? A. Kerim Şener; A. Kerim Şener 1Centre for Global Metallogeny, School of Earth and Geographical Sciences, University of Western Australia, Crawley, WA 6009, Australia Search for other works by this author on: GSW Google Scholar Carl Young; Carl Young 1Centre for Global Metallogeny, School of Earth and Geographical Sciences, University of Western Australia, Crawley, WA 6009, Australia Search for other works by this author on: GSW Google Scholar David I. Groves; David I. Groves 1Centre for Global Metallogeny, School of Earth and Geographical Sciences, University of Western Australia, Crawley, WA 6009, Australia Search for other works by this author on: GSW Google Scholar Bryan Krapež; Bryan Krapež 1Centre for Global Metallogeny, School of Earth and Geographical Sciences, University of Western Australia, Crawley, WA 6009, Australia Search for other works by this author on: GSW Google Scholar Ian R. Fletcher Ian R. Fletcher 1Centre for Global Metallogeny, School of Earth and Geographical Sciences, University of Western Australia, Crawley, WA 6009, Australia Search for other works by this author on: GSW Google Scholar Author and Article Information A. Kerim Şener 1Centre for Global Metallogeny, School of Earth and Geographical Sciences, University of Western Australia, Crawley, WA 6009, Australia Carl Young 1Centre for Global Metallogeny, School of Earth and Geographical Sciences, University of Western Australia, Crawley, WA 6009, Australia David I. Groves 1Centre for Global Metallogeny, School of Earth and Geographical Sciences, University of Western Australia, Crawley, WA 6009, Australia Bryan Krapež 1Centre for Global Metallogeny, School of Earth and Geographical Sciences, University of Western Australia, Crawley, WA 6009, Australia Ian R. Fletcher 1Centre for Global Metallogeny, School of Earth and Geographical Sciences, University of Western Australia, Crawley, WA 6009, Australia Publisher: Geological Society of America Received: 14 Jul 2004 Revision Received: 18 Nov 2004 Accepted: 26 Nov 2004 First Online: 02 Mar 2017 Online ISSN: 1943-2682 Print ISSN: 0091-7613 Geological Society of America Geology (2005) 33 (3): 225–228. https://doi.org/10.1130/G21017.1 Article history Received: 14 Jul 2004 Revision Received: 18 Nov 2004 Accepted: 26 Nov 2004 First Online: 02 Mar 2017 Cite View This Citation Add to Citation Manager Share Icon Share Facebook Twitter LinkedIn Email Permissions Search Site Citation A. Kerim Şener, Carl Young, David I. Groves, Bryan Krapež, Ian R. Fletcher; Major orogenic gold episode associated with Cordilleran-style tectonics related to the assembly of Paleoproterozoic Australia?. Geology 2005;; 33 (3): 225–228. doi: https://doi.org/10.1130/G21017.1 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 New in situ sensitive high-resolution ion-microprobe (SHRIMP) U-Pb analyses of hydrothermal phosphates associated with orogenic gold mineralization in the Paleoproterozoic Ashburton and Pine Creek gold provinces of northern Australia provide ages of ca. 1740 and ca. 1730 Ma, respectively. Argon-argon analyses of gold-related hydrothermal mica from the Tanami gold province of northern Australia provide ages ca. 1730 Ma. It is important to note that late orogenic events across the western half of Australia coincide with gold metallogenesis across this time interval, in several widely separated provinces. Thus, this orogenic gold episode is interpreted to relate to tectonic events during the amalgamation of various continental blocks to form Paleoproterozoic Australia. It is potentially Earth's best-preserved record of orogenic gold formation during a major early Precambrian continental assembly event. You do not have access to this content, please speak to your institutional administrator if you feel you should have access.
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The North China Craton contains voluminous gold deposits, which occur within the Northern Margin Gold Belt, the Southern Margin Gold Belt, and the Jiaodong Gold Province. However, relatively little is known of the gold deposits in the E–W-trending Northern Margin Gold Belt, which hosts 66 deposits with total reserves of >1000 tonnes. Based on a systematic summary of the geological features and ages of ore formation, three periods of gold mineralization can be distinguished: Permian–Triassic, Jurassic, and Early Cretaceous. Permian–Triassic gold mineralization occurs mainly as E–W-trending orogenic gold deposits with minor intrusion-related mineralization, formed in a syn- to post-collisional setting associated with closure of the Paleo-Asian Ocean. The Jurassic gold deposits occur in central and eastern parts of the Northern Margin Gold Belt as intrusion-related gold deposits that formed in a compressional setting associated with subduction of the Paleo-Pacific Plate. Early Cretaceous gold deposits in the eastern part of the Northern Margin Gold Belt are also intrusion-related, and formed in an extensional setting associated with rollback of the Paleo-Pacific Plate.
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An alkaline province has been found to constitute a significant part of the Archaean terraines in the Skjoldungen area, 63°N in South-East Greenland. A total of twenty-four alkaline complexes and syenite gneiss areas has been identified. The alkaline magmatism is regarded as syn- to post-tectonic to judge from the wide variation in the degree of deformation. A large number of intrusions are virtually undeformed. Petrographically the province encompasses slightly SiO2-undersaturated mafic to SiO2-saturated syenitic rocks and a carbonatite-bearing nephelinitic complex. Neodymium-samarium model ages and a zircon age show the alkaline rocks to be c. 2800 Ma old and the province thus constitutes the largest group of Archaean alkaline rocks yet found on Earth. The chemical characteristics, including very low concentrations of most trace elements except Ba and Sr, recall those of the younger alkaline Seiland province in Norway and the Haliburton-Bancroft province in Canada.
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