Late Neogene climate and glacial history of the Southern Vic

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TitleLate Neogene climate and glacial history of the Southern Victoria Land coast from integrated drill core, seismic and outcrop dataAbstractLate Neogene stratigraphy of southern Victoria Land Basin is revealed in coastal and offshore drill cores and a network of seismic data in McMurdo Sound, Antarctica. These data preserve a record of ice sheet response to global climate variability and progressive cooling through the past 5. million. years. Application of a composite standard age model for diatom event stratigraphy to the McMurdo Sound drill cores provides an internally precise mechanism to correlate stratigraphic data and derive an event history for the basin. These marine records are indirectly compared to data obtained from geological outcrop in the Transantarctic Mountains to produce an integrated history of Antarctic Ice Sheet response to climate variability from the early Pliocene to Recent. Four distinct chronostratigraphic intervals reflect stages and steps in a transition from a relatively warm early Pliocene Antarctic coastal climate to modern cold polar conditions. Several of these stages and steps correlate with global events identified via geochemical proxy data recovered from deep ocean cores in mid to low latitudes. These correlations allow us to consider linkages between the high southern latitudes and tropical regions and establish a temporal framework to examine leads and lags in the climate system through the late Neogene and Quaternary. The relative influence of climate-tectonic feedbacks is discussed in light of glacial erosion and isostatic rebound that also influence the history along the Southern Victoria Land coastal margin. Copyright 2011 Elsevier B.V.AcknowledgementsThe ANDRILL Program is a multinational collaboration between the Antarctic Programs of Germany, Italy, New Zealand and the United States. Antarctica New Zealand is the project operator, and has developed the drilling system in collaboration with Alex Pyne at Victoria University of Wellington and Webster Drilling and Enterprises Ltd. Scientific studies are jointly supported by the US National Science Foundation (Cooperative Agreement no. 0342484 to the University of Nebraska---Lincoln), NZ Ministry of Science and Innovation (previously NZ Foundation for Research Science and Technology) contracts C05X0410 and C05X1001, Royal Society of New Zealand Marsden Fund, the Italian Antarctic Research Programme, the German Research Foundation (DFG) and the Alfred Wegener Institute for Polar and Marine Research (Helmholtz Association of German Research Centres). Antarctica New Zealand supported the drilling team at Scott Base; Raytheon Polar Services supported the science team at McMurdo Station and the Crary Science and Engineering Laboratory. The ANDRILL Science Management Office at the University of Nebraska---Lincoln provided science planning and operational support. Comments from two anonymous reviewers enhanced and improved this paper.

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1st AuthorLevy, R.AuthorLevy, R.Cody, R.Crampton, J.Fielding, C.Golledge, N.Harwood, D.Henrys, S.Mckay, R.Naish, T.Ohneiser, C.Wilson, G.Wilson, T.Winter, D.Year2012JournalGlobal and Planetary ChangeVolume80-81Pages61-84DOI10.1016/j.gloplacha.2011.10.002URLhttps://www.scopus.com/inward/recor.....52824009d288ac9c9ada82a2fKeywordsANDRILLAntarcticaClimateDiatomNeo genes, ClimatologyCore drillingGlacial geologyGlaciersSeismologyStratigraphyTectonics, Drills, biostratigraphychronostratigraphyclimate feedbackclimate variationcoastal zonecoolingcore analysisdiatomdrillinggeochemistryglacial erosionglacial historyice sheetisostasyNeogeneoutcroppaleoclimateseismic datatectonics, AntarcticaEast AntarcticaMcMurdo SoundVictoria Land Basin, BacillariophytaZanclea, rank5Author KeywordsANDRILLAntarcticaClimateDiatomNeogeneQuantitative biostratigraphyTectonics

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TypeArticleCitationLevy, R., Cody, R., Crampton, J., Fielding, C., Golledge, N., Harwood, D., Henrys, S., Mckay, R., Naish, T., Ohneiser, C., Wilson, G., Wilson, T. and Winter, D. (2012). Late Neogene climate and glacial history of the Southern Victoria Land coast from integrated drill core, seismic and outcrop data. Global and Planetary Change, 80-81: 61-84