UrgentCallExpedition385–5/2019

U R G E N T C A L L F O R A P P L I C A T I O N S forbiogeochemistsbasedinECORDMemberCountriestoparticipatein

IODP Expedition 385: Guaymas Basin Tectonics and Biosphere

on-boardtheJOIDESResolution

DEADLINEtoapply:7June2019

The European Consortium for Ocean Research Drilling (ECORD) offers a unique opportunity to sail onExpedition 385 on-board the JOIDES Resolution in the framework of the International Ocean DiscoveryProgram(IODP),aninternationalresearchprogramfordrillingatsea.Expedition 385 "Guaymas Basin Tectonics and Deep Biosphere" is urgently seeking a shipboardbiogeochemist with expertise in microbial sulfate reduction process rate measurements. Expertise inhighly sensitive radiotracer techniques and their application under low-activity conditions in the deepbiosphereisparticularlydesirable.

Expedition385isscheduledfor16Septemberto16November2019 IODPExpedition385(basedonIODPProposals833-Full2and833-Add)willcoreandlogaseriesofsitesintheGuaymasBasintoinvestigatetherelationshipsbetweentectonics,magmatism,sedimentation,carboncycling,andmicrobialactivity.TheGuaymasBasin in theGulfofCalifornia is ayoung,marginal riftbasincharacterized by active seafloor spreading and rapid deposition of organic-rich sediments from highlyproductive overlying waters. The active formation of oceanic crust combined with a thick sedimentaryoverburden has given rise to a dynamic environment,where strongly connected physical, chemical, andbiological processes govern the cycling of sedimentary carbon. Its fate upon deposition depends on therelative efficiencies of interrelatingmicrobial and chemical processes, leading either to sequestration orrelease of carbon. Expedition 385 aims to illuminate the interaction between these processes and itsultimate consequences for carbon cycling, which will help understand similar settings in marginal seasthroughouttheworld.Drilling towardandthroughseismically imagedsillsofvaryingageandtemperature into the intercalatedsill-sedimentpackagewillprovidecoreandlogdatatoconstrainthelinksbetweensedimentaccumulation,sillemplacement,sedimentalteration,fluidexpulsion,aswellasmicrobialutilizationandsequestrationofcarbonalongsub-seafloorfluidpathways.Theprimaryobjectivesareto:(1) Explorethephysicalandchemicalgradientsalongactiveandextinctfluidpathwaysassociatedwithsillemplacement;(2) Investigate subsurfacemicrobial communities that are sustained by alteration products, in order todeterminehowefficientlytheycapturecarbon-bearingalterationproducts;and(3) Advanceourunderstandingoftheconditionsthatlimitlifeinthedeepbiosphere.

UrgentCallExpedition385–5/2019

Coringsill-sedimentsuccessionswillprovideanintegratedrecordof igneousaccretionaswellasbaselinedataof carbon flux, includingunaltered subsurface sediments and those that haveexperiencedmultiplegenerations of sill intrusion at depth. Petrophysical data (e.g., porosity/permeability) will also constraincrustal fluid flow and heat exchange that exert fundamental controls on this system. All findings willdeepenourunderstandingofmechanismsofcarbonremobilizationimplicatedinglobal-scalerapidclimatechange.For more information about the expedition science objectives and the JOIDES Resolution ExpeditionScheduleseehttp://iodp.tamu.edu/scienceops/-thisincludeslinkstotheindividualexpeditionwebpageswiththeoriginalIODPproposalandexpeditionplanninginformation.

ThiscallisonlyopentoscientistsinECORDmembercountries.

PleasedownloadtheApplytoSailgeneralapplicationformfromtheESSACwebpage:

http://www.ecord.org/expeditions/apply-to-sail/

Please,filloutallapplicablefieldsandsendittotheESSACofficebyemail(essac@plymouth.ac.uk)withthefollowingadditionaldocumentsbythedeadlineof7June2019:

1. A letter of interest outlining your specific expertise, previous involvement in DSDP/ ODP/ IODPexpeditions,researchinterests,primaryresearchgoalsofyourproposedparticipation.

2. CVandpublicationlist.3. Young researchers must additionally provide a letter of support from their host institution,

includinginformationonpost-cruisesciencesupport.All applications should state how you intend to achieve your proposed scientific objectives, withinformationonthefundingschemeandsupportfromyour institutionornationalfundingagencies.Moreinformationcanbefoundunder:http://www.ecord.org/expeditions/apply-to-sail/Inaddition to theESSACapplication, all applicantsmust inform theirnationalofficeornationaldelegateandsendthemacopyoftheirapplicationdocuments.Thenationalofficesornationaldelegatescanalsoprovideinformationregardingtravelsupport,post-cruisefundingopportunities,etc.Seehttp://www.ecord.org/about-ecord/about-us/foralistofthenationalcontactpersons.Forfurtherinformationorquestions,pleasecontacttheESSACOffice:ECORDScienceSupport&AdvisoryCommitteeAntonyMorris(ESSACChair)HannoKinkel(ESSACScienceCoordinator)SchoolofGeography,EarthandEnvironmentalSciences,PlymouthUniversity,UKDrakeCircus,PlymouthPL48AA,UKe-mail:essac@plymouth.ac.ukwebsite:www.ecord.org