Continental Magmatism and Uplift as the Primary Driver for First-Order Oceanic 87Sr/86Sr Variability with Implications for Global Climate and Atmospheric Oxygenation

GSA Logo HomeJoinGSA StoreDonateContact Toggle search navigation Sign In Search Advanced AboutToggle Scientific DivisionsGeographic SectionsLeadershipCommitteesHonors & AwardsWho We AreDiversityEthicsGSA InternationalGSA Foundation MembershipToggle Join / RenewBenefits and DuesGet InvolvedCampus RepsMember RecognitionCode of Ethics PublicationsToggle JournalsGSA TodayBooksGSA StoreInfo ServicesGeofacetsMeeting Abstracts EventsToggle Annual MeetingFuture MeetingsSection MeetingsPast Meetings AbstractsPenrose ConferencesThompson Field ForumsField ExperiencesGeoscience CalendarEvents Code Conduct Education CareersToggle GeoCareersGeoscience Job BoardGrants ScholarshipsField ExperiencesNetworking/MentoringK-12 Educator SupportWebinar LibraryGeologic Time Scale Science PolicyToggle News from The HillGSA Policy RolesPosition StatementsCritical IssuesCongressional FellowshipScience FellowshipEngage with Policymakers NewsToggle Communication InternshipNews ReleasesNewsroom (for Journalists)GSA NewsAnnual Meeting NewsroomSpeaking Geoscience BlogGSA ConnectionGeoScene Newsletter Keyword Home » Publications Today Abstract View Volume 32 Issue 2 (February 2022) Article, pp. 4-10 | Full Text PDF Continental Magmatism Uplift as the Primary Driver for First-Order Oceanic 87Sr/86Sr Variability Implications Global Climate Atmospheric Oxygenation Timothy Paulsen Dept. Geology, University Wisconsin Oshkosh, 54901, USA, [email protected] Chad Deering Geological Mining Engineering Sciences, Michigan Technological University, Houghton, 49931, USA Jakub Sliwinski Institute Geochemistry Petrology, Earth ETH Zurich, 8092, Switzerland Snehamoy Chatterjee Olivier Bachman Oceans cover 70% Earth’s surface, setting it apart other terrestrial planets in solar system, but mechanisms driving oceanic chemical evolution through time remain an important unresolved problem. Imbalance strontium cycle, introduced, example, by increases continental weathering associated mountain building, has been inferred shifts marine carbonate ratios. There are, however, uncertainties about spatial temporal patterns crustal past, particularly period leading up to Cambrian explosion life. Here we show that U-Pb age trace element data a global compilation detrital zircons are consistent ratios, suggesting changes radiogenic input into oceans over time. Increases riverine Sr were related break-up dispersal continents, increased erosion higher proportion rocks high-elevation crust. Tectonic processes exert strong influence on planet’s geologic scales may have key driver concomitant atmosphere-ocean oxygenation climate cooling. Manuscript received 14 Oct. 2021. Revised manuscript 1 Nov. accepted 4 Posted 13 Dec. © Society America, CC-BY-NC. https://doi.org/10.1130/GSATG526A.1 Cover Image Google Scholar Journals Geology Bulletin Geosphere Lithosphere Environmental Archive Features Info Authors Advertising Board Books Special Papers Guides Memoirs Reviews DNAG Digital Maps Map Chart Series Memorials Store Services About Our Editors Author Submission Data Repository Ethical Guidelines Copyright Subscriptions How Access Open Geofacets Facebook Twitter Instagram YouTube LinkedIn Wordpress HomeAdvertisingPlace AdFAQsSearchPrivacy PolicyJobs at 2022 Inc.