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Relation between depositional environment and the elemental composition of early diagenetic siderite

1989; Geological Society of America; Volume: 17; Issue: 8 Linguagem: Inglês

10.1130/0091-7613(1989)017 2.3.co;2

1943-2682

Peter S. Mozley,

Paleontology and Stratigraphy of Fossils

Research Article| August 01, 1989 Relation between depositional environment and the elemental composition of early diagenetic siderite Peter S. Mozley Peter S. Mozley 1Department of Geological Sciences, University of California, Santa Barbara, California 93106 Search for other works by this author on: GSW Google Scholar Author and Article Information Peter S. Mozley 1Department of Geological Sciences, University of California, Santa Barbara, California 93106 Publisher: Geological Society of America First Online: 02 Jun 2017 Online ISSN: 1943-2682 Print ISSN: 0091-7613 Geological Society of America Geology (1989) 17 (8): 704–706. https://doi.org/10.1130/0091-7613(1989)017 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 Peter S. Mozley; Relation between depositional environment and the elemental composition of early diagenetic siderite. Geology 1989;; 17 (8): 704–706. doi: https://doi.org/10.1130/0091-7613(1989)017 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 Early diagenetic siderites from marine and fresh-water depositional environments are characterized by distinctive compositional trends. Siderite from fresh-water environments is often relatively pure (i.e., greater than 90 mol% FeCO3) and commonly attains end-member composition. Siderite from marine environments, however, is always extremely impure and has extensive substitution of Mg (up to 41 mol%) and, to a lesser extent, Ca (up to 15 mol%) for Fe in the siderite lattice. In addition, marine siderite generally contains less Mn and has a higher Mg/Ca ratio than fresh-water siderite.This compositional variation appears to result from differences in the chemistry of early marine and meteoric pore waters, inasmuch as early marine pore waters generally have a higher Mg2+/Ca2+ ratio and contain less Mn2+ and Fe2+ and more Ca2+ and Mg2+ than meteoric waters. 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.