georefid:2009-080334SEDIS Publication Catalogue

ana.macario@awi.de

http://sedis.iodp.org/pub-catalogue/informationpointOfContact2013-07-08T00:00:00Zhttp://sedis.iodp.org/pub-catalogue/index.php?id=10.1016/j.orggeochem.2008.01.0192008-01-01publicationgeorefid:2009-080334doi:10.1016/j.orggeochem.2008.01.019Schouten, StefanRoyal Netherlands Institute for Sea Research, Department of Marine Organic Biogeochemistry, Texel, NetherlandsauthorBaas, MarianneIntegrated Geochemical Interpretation, United KingdomauthorHopmans, Ellen C.authorSinninghe Damste, Jaap S.authorElsevier, InternationalpublisherdocumentHardcopyIn: Pancost, Richard D. (editor), Farrimond, Paul (editor), Advances in organic geochemistry 2007; proceedings of the 23rd international meeting on Organic geochemistry39 (8)1033-1038Recent studies have shown that glycerol dialkyl glycerol tetraether (GDGT) lipids, thought be unique for (hyper)thermophilic archaea, are also present in non-thermophilic archaea and environments. In this study, an unusual H-shaped isoprenoid GDGT, in which the two biphytanyl carbon skeletons are covalently bound by a carbon-carbon bond, was unambiguously identified in a number of sediments from marine and lacustrine environments. Its abundance varies from 0.2% to 6% of isoprenoid GDGTs. The H-shaped isoprenoid GDGT was originally identified in hyperthermophilic archaea and its presence in marine and lacustrine sediments suggests it is also synthesized by certain non-thermophilic relatives, possibly Euryarchaeota. Abstract Copyright (2008) Elsevier, B.V.completedGeochemistry of rocks, soils, and sedimentsanalysisArchaeaDeep Sea Drilling ProgramDSDP Site 386DSDP Site 545ethersfatty acidsgeochemistryidentificationIPODisoprenoidslacustrine environmentlake sedimentsLeg 43Leg 79Leg 151Leg 207Leg 174AXlipidsmarine sedimentsOcean Drilling ProgramODP Site 913ODP Site 1258organic acidsorganic compoundssedimentsurn:org.iodp:exp:43urnlargerWorkCitationcampaignurn:org.iodp:exp:79urnlargerWorkCitationcampaignurn:org.iodp:exp:151urnlargerWorkCitationcampaignurn:org.iodp:exp:207urnlargerWorkCitationcampaignurn:org.iodp:exp:43:site:386urnlargerWorkCitationstudyurn:org.iodp:exp:43urnlargerWorkCitationcampaignurn:org.iodp:exp:79:site:545urnlargerWorkCitationstudyurn:org.iodp:exp:79urnlargerWorkCitationcampaignurn:org.iodp:exp:151:site:913urnlargerWorkCitationstudyurn:org.iodp:exp:151urnlargerWorkCitationcampaignurn:org.iodp:exp:207:site:1258urnlargerWorkCitationstudyurn:org.iodp:exp:207urnlargerWorkCitationcampaignEnglishgeoscientificInformation-75.3500-6.56489.260075.2921Based on Publisher-supplied data