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- W1968234995 abstract "Research Article| March 01, 2008 Earth's copper resources estimated from tectonic diffusion of porphyry copper deposits Stephen E. Kesler; Stephen E. Kesler 1Department of Geological Sciences, University of Michigan, Ann Arbor, Michigan 48109, USA Search for other works by this author on: GSW Google Scholar Bruce H. Wilkinson Bruce H. Wilkinson 2Department of Earth Sciences, Syracuse University, Syracuse, New York 13244-1070, USA Search for other works by this author on: GSW Google Scholar Geology (2008) 36 (3): 255–258. https://doi.org/10.1130/G24317A.1 Article history received: 27 Jul 2007 rev-recd: 27 Nov 2007 accepted: 04 Dec 2007 first online: 02 Mar 2017 Cite View This Citation Add to Citation Manager Share Icon Share Facebook Twitter LinkedIn MailTo Tools Icon Tools Get Permissions Search Site Citation Stephen E. Kesler, Bruce H. Wilkinson; Earth's copper resources estimated from tectonic diffusion of porphyry copper deposits. Geology 2008;; 36 (3): 255–258. doi: https://doi.org/10.1130/G24317A.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 Improved estimates of global mineral endowments are relevant to issues ranging from strategic planning to global geochemical cycling. We have used a time-space model for the tectonic migration of porphyry copper deposits vertically through the crust to calculate Earth's endowment of copper in mineral deposits. The model relies only on knowledge of numbers and ages of porphyry copper deposits, Earth's most widespread and important source of copper, in order to estimate numbers of eroded and preserved deposits in the crust. Model results indicate that ∼125,895 porphyry copper deposits were formed during Phanerozoic time, that only ∼47,789 of these remain at various crustal depths, and that these contain ∼1.7 × 1011 tonnes (t) of copper. Assuming that other types of copper deposits behave similarly in the crust and have abundances proportional to their current global production yields an estimate of 3 × 1011 t for total global copper resources at all levels in Earth's crust. Thus, ∼0.25% of the copper in the crust has been concentrated into deposits through Phanerozoic time, and about two-thirds of this has been recycled by uplift and erosion. The amount of copper in deposits above 3.3 km, a likely limit of future mining, could supply current world mine production for 5500 yr, thus quantifying the highly unusual and nonrenewable nature of mineral deposits. You do not have access to this content, please speak to your institutional administrator if you feel you should have access." @default.
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- W1968234995 title "Earth's copper resources estimated from tectonic diffusion of porphyry copper deposits" @default.
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