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High-resolution and high-precision S-isotopic fingerprinting also revealed that the tropospheric sulfate produced during fossil-fuel and biomass burning contributes to the stratospheric sulfate aerosol layer, a contribution previously unrecognized. The distribution of sulfur anomalies mimics the Archean isotope record, which is used to track the origin and evolution of oxygen on earth.<\/jats:p>","DOI":"10.1073\/pnas.1406315111","type":"journal-article","created":{"date-parts":[[2014,8,5]],"date-time":"2014-08-05T02:19:13Z","timestamp":1407205153000},"page":"11979-11983","update-policy":"https:\/\/doi.org\/10.1073\/pnas.cm10313","source":"Crossref","is-referenced-by-count":46,"title":["Large sulfur-isotope anomaly in nonvolcanic sulfate aerosol and its implications for the Archean atmosphere"],"prefix":"10.1073","volume":"111","author":[{"given":"Robina","family":"Shaheen","sequence":"first","affiliation":[{"name":"Department of Chemistry and Biochemistry, University of California, San Diego, La Jolla, CA 92093;"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Mariana M.","family":"Abaunza","sequence":"additional","affiliation":[{"name":"Department of Chemistry and Biochemistry, University of California, San Diego, La Jolla, CA 92093;"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Teresa L.","family":"Jackson","sequence":"additional","affiliation":[{"name":"Department of Chemistry and Biochemistry, University of California, San Diego, La Jolla, CA 92093;"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Justin","family":"McCabe","sequence":"additional","affiliation":[{"name":"Department of Chemistry and Biochemistry, University of California, San Diego, La Jolla, CA 92093;"},{"name":"Pacific Ridge School, Carlsbad, CA 92009;"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Jo\u00ebl","family":"Savarino","sequence":"additional","affiliation":[{"name":"Laboratoire de Glaciologie et de G\u00e9ophysique de l'Environnement, Centre National de la Recherche Scientifique, Unit\u00e9 Mixte de Recherche 5183, F-38041 Grenoble, France; and"},{"name":"Laboratoire de Glaciologie et de G\u00e9ophysique de l'Environnement, Universit\u00e9 Grenoble Alpes, Unit\u00e9 Mixte de Recherche 5183, F-38041 Grenoble, France"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Mark H.","family":"Thiemens","sequence":"additional","affiliation":[{"name":"Department of Chemistry and Biochemistry, University of California, San Diego, La Jolla, CA 92093;"}],"role":[{"vocabulary":"crossref","role":"author"}]}],"member":"341","published-online":{"date-parts":[[2014,8,4]]},"reference":[{"key":"e_1_3_3_1_2","doi-asserted-by":"crossref","first-page":"151","DOI":"10.1016\/B978-0-08-095975-7.00406-X","volume-title":"Treatise on Geochemistry","author":"Thiemens MH","year":"2014","unstructured":"MH Thiemens, R Shaheen, 5.6-Mass-independent isotopic composition of terrestrial and extraterrestrial materials. 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