georefid:2007-087747georefid:2007-087742SEDIS Publication Catalogue

ana.macario@awi.de

http://sedis.iodp.org/pub-catalogue/informationpointOfContact2011-06-23T00:00:00Zhttp://sedis.iodp.org/pub-catalogue/index.php?id=10.2973/odp.proc.sr.209.002.20072007-01-01publicationgeorefid:2007-087747doi:10.2973/odp.proc.sr.209.002.2007Josef, Jennifer A.Bruce Museum of Arts and Sciences, Greenwich, CT, United StatesauthorFisk, Martin R.Woods Hole Oceanographic Institution, United StatesauthorGiovannoni, StephenOcean Drilling Program, United StatesauthorTexas A&M University, Ocean Drilling Program, College Station, TX, United StatespublisherdocumentDigitalIn: Kikawa, Eiichi, Kelemen, Peter B., Miller, D. Jay, Abe, Natsue, Bach, Wolfgang, Carlson, Richard L., Casey, John F., Chambers, Lynne M., Cheadle, Michael, Cipriani, Anna, Dick, Henry J. B., Faul, Ulrich, Garces, Miguel, Garrido, Carlos J., Gee, Jeffrey S., Godard, Marguerite M., Graham, David W., Griffin, Dale W., Harvey, Jason, Ildefonse, Benoit, Iturrino, Gerardo J., Josef, Jennifer A., Meurer, William P., Paulick, Holger, Rosner, Martin, Schroeder, Timothy, Seyler, Monique, Takazawa, Eiichi, Proceedings of the Ocean Drilling Program; scientific results; drilling mantle peridotite along the Mid-Atlantic Ridge from 14 degrees to 16 degrees N; covering Leg 209 of the cruises of the drilling vessel JOIDES Resolution; Rio de Janeiro, Brazil, to St. George, Bermuda; Sites 1268-1275; 6 May-6 July 2003209Using peridotite drilled during Ocean Drilling Program Leg 209, a series of enrichment cultures were initiated on board the ship to stimulate microbially enhanced dissolution of olivine. Dissolution was estimated by measured changes in dissolved Li and Si in the media through time (up to 709 days). The results suggest that there was no significant difference between the amounts of dissolved Li and Si in most of the inoculated microbial cultures compared to the control cultures. Alternative explanations for this are that 1. No microbes are living in the culture tubes that can affect the dissolution rates of olivine, 2. The control cultures have microbes effecting the dissolution of olivine as well as the inoculated cultures, 3. Not enough time has passed to build up a large enough microbial population to effect the dissolution of the olivine in the culture tubes, 4. Microbes act to suppress dissolution of olivine instead of enhancing dissolution, and 5. Abiotic dissolution overshadows microbially enhanced dissolution. Further work is required to test these alternatives.completedIgneous and metamorphic petrologyGeneral geochemistryAtlantic Oceanbiogenic processesboreholescoreseffectsexperimental studiesgeochemistryharzburgiteigneous rockslaboratory studiesLeg 209microorganismsMid-Atlantic RidgenesosilicatesNorth AtlanticOcean Drilling Programolivineolivine grouporthosilicatesperidotitesplutonic rocksratessilicatessolutionultramaficsurn:org.iodp:exp:209urnlargerWorkCitationcampaignEnglishgeoscientificInformation-47.0000-44.300014.400015.4500Includes appendicesapplication/pdfunknownSEDIS Publication Catalogue

ana.macario@awi.de

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