Amphibole “sponge” in arc crust?

Research Article| September 01, 2007 Amphibole “sponge” in arc crust? Jon Davidson; Jon Davidson 1Department of Earth Sciences, University of Durham, South Road, Durham DH1 3LE, UK Search for other works by this author on: GSW Google Scholar Simon Turner; Simon Turner 2Geochemical Evolution and Metallogeny of Continents (GEMOC), Department of Earth and Planetary Sciences, Macquarie University, Sydney NSW 2109, Australia Search for other works by this author on: GSW Google Scholar Heather Handley; Heather Handley 3Department of Earth Sciences, University of Durham, South Road, Durham DH1 3LE, UK, and GEMOC, Department of Earth and Planetary Sciences, Macquarie University, Sydney NSW 2109, Australia Search for other works by this author on: GSW Google Scholar Colin Macpherson; Colin Macpherson 4Department of Earth Sciences, University of Durham, South Road, Durham DH1 3LE, UK Search for other works by this author on: GSW Google Scholar Anthony Dosseto Anthony Dosseto 5GEMOC, Department of Earth and Planetary Sciences, Macquarie University, Sydney NSW 2109, Australia Search for other works by this author on: GSW Google Scholar Geology (2007) 35 (9): 787–790. https://doi.org/10.1130/G23637A.1 Article history received: 20 Dec 2006 rev-recd: 20 Apr 2007 accepted: 26 Apr 2007 first online: 09 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 Jon Davidson, Simon Turner, Heather Handley, Colin Macpherson, Anthony Dosseto; Amphibole “sponge” in arc crust?. Geology 2007;; 35 (9): 787–790. doi: https://doi.org/10.1130/G23637A.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 Pressure-temperature-time paths followed by arc magmas ascending through the lithosphere dictate the phase assemblage that crystallizes, and hence the compositions of liquid fractionates. Here we use La/Yb and Dy/Yb versus SiO2 relationships from selected volcanoes to show that amphibole is an important mineral during differentiation of arc magma. Production of intermediate and silicic arc magmas occurs as magmas stall and cool in the mid-lower crust, where amphibole is stable. Because amphibole is rarely a phenocryst phase, we term this “cryptic amphibole fractionation.” If this process is as widespread as our investigation suggests, then (1) amphibole cumulates may act as an effective filter for water dissolved in mantle-derived magmas; (2) amphibole cumulates may act as a fertile source of intracrustal melts and fluids; and (3) recycling of amphibole cumulates has the potential to return incompatible trace elements and water to the mantle. You do not have access to this content, please speak to your institutional administrator if you feel you should have access.