georefid:2012-041683SEDIS 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=10.1130/G32584.12012-01-01publicationgeorefid:2012-041683doi:10.1130/G32584.1Carpenter, Raymond J.University of Adelaide, School of Earth and Environmental Sciences, Adelaide, South Aust., AustraliaauthorJordan, Gregory J.University of Tasmania, AustraliaauthorMacphail, Mike K.Australian National University, AustraliaauthorHill, Robert S.South Australian Museum, AustraliaauthorGeological Society of America (GSA), Boulder, CO, United StatespublisherdocumentHardcopyGeology (Boulder)40 (3)267-270A worldwide greenhouse warm climate prevailed in the Early Eocene, and nowhere was warming more dramatic than at high latitudes. Sea-surface temperatures of approximately 34 degrees C have been estimated for a site at paleolatitude 65 degrees S on the East Tasman Plateau of the southwest Pacific Ocean, but these estimates require independent validation, including from terrestrial proxies. Here we determine a near-tropical terrestrial mean annual temperature estimate of approximately 24 degrees C at sea level for an Early Eocene site in Tasmania, Australia, using three proxies based on well-dated estuarine plant fossils. This estimate is lower than the nearby sea estimates to the east, but similarly suggests that, as in the southwest Pacific, Early Eocene climates in the eastern Australo-Antarctic region were warmer than inferred elsewhere at high latitudes, including on the Antarctic Peninsula. Such data are essential for improving our understanding of climatic and biotic evolution in the Southern Hemisphere.completedStratigraphyAntarctic PeninsulaAntarcticaAustralasiaAustraliaCenozoicConiferalescontinental marginEast Tasman PlateauEoceneGymnospermaeIndian OceanleavesLeg 189lower EoceneMacquarie Harbourmiosporesmodern analogsOcean Drilling ProgramODP Site 1172Pacific OceanpaleoclimatologyPaleogenepaleotemperaturepalynomorphsPlantaePodocarpuspollenpollen analysissea-surface temperatureSouth PacificSouthwest PacificSpermatophytasubtropical environmentTasman SeaTasmania Australiaterrestrial environmentTertiarytropical environmentWest Pacificurn:org.iodp:exp:189urnlargerWorkCitationcampaignurn:org.iodp:exp:189:site:1172urnlargerWorkCitationstudyurn:org.iodp:exp:189urnlargerWorkCitationcampaignEnglishgeoscientificInformation145.2100149.5600-43.5800-42.1700Includes appendix; with GSA Data Repository Item 2012067