Basal metalliferous sediments from the eastern Pacific

Abstract

Research Article| June 01, 1976 Basal metalliferous sediments from the eastern Pacific D. S. CRONAN D. S. CRONAN 1ACRG, Department of Geology, Imperial College, London SW7, England Search for other works by this author on: GSW Google Scholar Author and Article Information D. S. CRONAN 1ACRG, Department of Geology, Imperial College, London SW7, England Publisher: Geological Society of America First Online: 01 Jun 2017 Online ISSN: 1943-2674 Print ISSN: 0016-7606 Geological Society of America GSA Bulletin (1976) 87 (6): 928–934. https://doi.org/10.1130/0016-7606(1976)87<928:BMSFTE>2.0.CO;2 Article history First Online: 01 Jun 2017 Cite View This Citation Add to Citation Manager Share Icon Share Facebook Twitter LinkedIn MailTo Tools Icon Tools Get Permissions Search Site Citation D. S. CRONAN; Basal metalliferous sediments from the eastern Pacific. GSA Bulletin 1976;; 87 (6): 928–934. doi: https://doi.org/10.1130/0016-7606(1976)87<928:BMSFTE>2.0.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 SocietyGSA Bulletin Search Advanced Search Abstract Analyses by atomic absorption spectrophotometry and spark-source mass spectrography of 25 basal metalliferous sediment units from widely spaced locations on the western flank of the East Pacific Rise show that the deposits are enriched relative to normal pelagic sediment in Fe, Mn, Ni, Cu, Pb, Zn, and many trace elements. The elements are partitioned differently between the various mineralogic constituents of the sediment, with Fe and Mn largely in separate phases and many of the remaining elements primarily associated with reducible ferromanganese oxide minerals but also with iron minerals and other phases. Most of the iron in the deposits is probably of volcanic origin, and much of the manganese and minor elements is derived from sea water. The bulk composition of the deposits varies with age; this is thought to be due to variations in the incidence of volcanic activity at the East Pacific Rise crest where the deposits were formed. 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.