Cation-leaching sites in rock varnish

Research Article| November 01, 1991 Cation-leaching sites in rock varnish R. I. Dorn; R. I. Dorn 1Department of Geography, Arizona State University, Tempe, Arizona 85287 Search for other works by this author on: GSW Google Scholar D. H. Krinsley D. H. Krinsley 1Department of Geography, Arizona State University, Tempe, Arizona 852872Department of Geological Sciences, University of Oregon, Eugene, Oregon 97403-1272 Search for other works by this author on: GSW Google Scholar Geology (1991) 19 (11): 1077–1080. https://doi.org/10.1130/0091-7613(1991)019<1077:CLSIRV>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 MailTo Tools Icon Tools Get Permissions Search Site Citation R. I. Dorn, D. H. Krinsley; Cation-leaching sites in rock varnish. Geology 1991;; 19 (11): 1077–1080. doi: https://doi.org/10.1130/0091-7613(1991)019<1077:CLSIRV>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 Backscatter electron microscopy of subaerial rock varnish reveals porous textures that are sites of cation leaching with lowered (K+ + Ca2+)/Ti4+ ratios and concentrations of manganese and iron. Laboratory studies show that rates of potassium and calcium leaching increase with temperature,time,and surface area, and decrease when varnish interdigitates with coatings of amorphous silica. Only varnishes with continuous layering should be used in paleoenvironmental research and paleomagnetic studies, not textures indicative of postdepositional modifications. 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.