Magnetite authigenesis and diagenetic paleotemperatures across the northern Appalachian basin

Research Article| July 01, 1988 Magnetite authigenesis and diagenetic paleotemperatures across the northern Appalachian basin Mike Jackson; Mike Jackson 1Department of Geological Sciences, University of Michigan, Ann Arbor, Michigan 48109-1063 Search for other works by this author on: GSW Google Scholar Chad McCabe; Chad McCabe 2Department of Geology, Louisiana State University, Baton Rouge, Louisiana 70803 Search for other works by this author on: GSW Google Scholar Martha M. Ballard; Martha M. Ballard 1Department of Geological Sciences, University of Michigan, Ann Arbor, Michigan 48109-1063 Search for other works by this author on: GSW Google Scholar Rob Van der Voo Rob Van der Voo 1Department of Geological Sciences, University of Michigan, Ann Arbor, Michigan 48109-1063 Search for other works by this author on: GSW Google Scholar Author and Article Information Mike Jackson 1Department of Geological Sciences, University of Michigan, Ann Arbor, Michigan 48109-1063 Chad McCabe 2Department of Geology, Louisiana State University, Baton Rouge, Louisiana 70803 Martha M. Ballard 1Department of Geological Sciences, University of Michigan, Ann Arbor, Michigan 48109-1063 Rob Van der Voo 1Department of Geological Sciences, University of Michigan, Ann Arbor, Michigan 48109-1063 Publisher: Geological Society of America First Online: 02 Jun 2017 Online ISSN: 1943-2682 Print ISSN: 0091-7613 Geological Society of America Geology (1988) 16 (7): 592–595. https://doi.org/10.1130/0091-7613(1988)016<0592:MAADPA>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 Mike Jackson, Chad McCabe, Martha M. Ballard, Rob Van der Voo; Magnetite authigenesis and diagenetic paleotemperatures across the northern Appalachian basin. Geology 1988;; 16 (7): 592–595. doi: https://doi.org/10.1130/0091-7613(1988)016<0592:MAADPA>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 The concentration of magnetite in the Lower and Middle Devonian Helderberg and Onondaga carbonate formations varies in a distinct pattern along an east-west profile across New York State. Magnetite concentrations are uniformly low in the western half of the profile, increase sharply eastward to a peak value near Syracuse, and decrease farther east. The pattern strongly resembles previously reported variations in the extent of clay mineral diagenesis that reflect differences in paleotemperatures along the profile. Previous paleomagnetic studies have documented that the magnetite carries a well- defined magnetization of Pennsylvanian-Permian age, and magnetite authigenesis is therefore no younger than late Paleozoic. We attribute the correlation between high magnetite concentration and high illite content to temperature-dependent diagenesis triggered by orogenic fluids. The large proportion of secondary magnetite indicates that over most of the area, the mechanism of late Paleozoic remagnetization was principally chemical. Thermal effects played a less direct role in the remagnetization of the strata by controlling the extent of the chemical processes that resulted in overprinting of the original remanence. 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.