Metasomatism in a subduction complex: Constraints from microanalysis of trace elements in minerals from garnet amphibolite from the Catalina Schist

Abstract

Research Article| April 01, 1992 Metasomatism in a subduction complex: Constraints from microanalysis of trace elements in minerals from garnet amphibolite from the Catalina Schist D. D. Hickmott; D. D. Hickmott 1Los Alamos National Laboratory, EES-1, MS-D462, Los Alamos, New Mexico 87545 Search for other works by this author on: GSW Google Scholar S. S. Sorensen; S. S. Sorensen 2Department of Mineral Sciences, NHB-119, NMNH, Smithsonian Institution, Washington, D.C. 20560 Search for other works by this author on: GSW Google Scholar P.S.Z. Rogers P.S.Z. Rogers 3Los Alamos National Laboratory, INC-7, MS-J514, Los Alamos, New Mexico 87545 Search for other works by this author on: GSW Google Scholar Author and Article Information D. D. Hickmott 1Los Alamos National Laboratory, EES-1, MS-D462, Los Alamos, New Mexico 87545 S. S. Sorensen 2Department of Mineral Sciences, NHB-119, NMNH, Smithsonian Institution, Washington, D.C. 20560 P.S.Z. Rogers 3Los Alamos National Laboratory, INC-7, MS-J514, Los Alamos, New Mexico 87545 Publisher: Geological Society of America First Online: 02 Jun 2017 Online ISSN: 1943-2682 Print ISSN: 0091-7613 Geological Society of America Geology (1992) 20 (4): 347–350. https://doi.org/10.1130/0091-7613(1992)020<0347:MIASCC>2.3.CO;2 Article history First Online: 02 Jun 2017 Cite View This Citation Add to Citation Manager Share Icon Share Facebook Twitter LinkedIn Email Permissions Search Site Citation D. D. Hickmott, S. S. Sorensen, P.S.Z. Rogers; Metasomatism in a subduction complex: Constraints from microanalysis of trace elements in minerals from garnet amphibolite from the Catalina Schist. Geology 1992;; 20 (4): 347–350. doi: https://doi.org/10.1130/0091-7613(1992)020<0347:MIASCC>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 Trace element abundances and zoning were measured in minerals from a metasomatized garnet-amphibolite block from the Catalina Schist, using both ion and proton microprobes. Zoisite strongly concentrates light rare earth elements (REEs), Sr, Y, and Pb; amphibole concentrates Ni and Zn; garnet concentrates Y and heavy REEs; and titanite concentrates Nb. Major and trace elements in the garnets are zoned. Garnets in the core of the block display an overgrowth enriched in Mn, Y, and heavy REE, on a Y- and heavy-REE-poor core. Zirconium values remain relatively constant. The element enrichments in the garnet overgrowth suggest mobility of REEs at either a hand-sample or regional scale at subduction-zone pressure-temperature conditions. Metamorphic fluids may selectively transport heavy REEs relative to some high field strength elements in some convergent-margin settings. The distribution of Sr and Pb within subduction zones may reflect the dehydration and melting behavior of epidote-group minerals. 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.