Supercontinent cycles and the distribution of metal deposits through time 论文

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Research Article| April 01, 1992 Supercontinent cycles and the distribution of metal deposits through time M. E. Barley; M. E. Barley 1Key Centre for Strategic Mineral Deposits, Department of Geology, University of Western Australia Nedlands 6009, Australia Search for other works by this author on: GSW Google Scholar D. I. Groves D. I. Groves 1Key Centre for Strategic Mineral Deposits, Department of Geology, University of Western Australia Nedlands 6009, Australia Search for other works by this author on: GSW Google Scholar Geology (1992) 20 (4): 291–294. https://doi.org/10.1130/0091-7613(1992)020<0291:SCATDO>2.3.CO;2 Article history first online: 02 Jun 2017 Cite View This Citation Add to Citation Manager Share Icon Share MailTo Twitter LinkedIn Tools Icon Tools Get Permissions Search Site Citation M. E. Barley, D. I. Groves; Supercontinent cycles and the distribution of metal deposits through time. Geology 1992;; 20 (4): 291–294. doi: https://doi.org/10.1130/0091-7613(1992)020<0291:SCATDO>2.3.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 Systematic temporal variations in the distribution of several important groups of metal deposits reflect the cyclic aggregation and breakup of large continents. In particular, metal deposits that form in continental basins or are associated with anorogenic magmatism were extraordinarily abundant in the Middle Proterozoic (2.0 to 1.4 Ga), corresponding to the assembly of the first large continents. It is important to note that peaks in the abundance of continental metal deposits also coincide with a postulated Late Proterozoic supercontinent (1.0 to 0.8 Ga) and the near maximum extent of Pangea. In contrast, metal deposits that form, or are preserved, in convergent-margin orogens were most abundant in the late Archean (2.9 to 2.6 Ga), corresponding to a period of high global heat flow and rapid stabilization of continental crust, and the past 200 m.y., which corresponds to the present tectonic cycle. Similar mineralization was also present, albeit less abundant, in Early Proterozoic orogens, as well as in Late Proterozoic and Phanerozoic orogens. Future metals exploration may benefit from the application of sequence stratigraphy, as used by the oil industry, to recognize such cycles, particularly in the Precambrian rock record. This content is PDF only. Please click on the PDF icon to access. First Page Preview Close Modal You do not have access to this content, please speak to your institutional administrator if you feel you should have access.