A cool temperate climate on the Antarctic Peninsula through the latest Cretaceous to early Paleogene

David B. Kemp, Stuart A. Robinson, J. Alistair Crame, Jane E. Francis, Jon Ineson, Rowan J. Whittle, Vanessa Bowman, Charlotte O'Brien

    Research output: Contribution to journalArticleResearchpeer-review

    42 Citations (Scopus)

    Abstract

    Constraining past fl uctuations in global temperatures is central to our understanding of the Earth's climatic evolution. Marine proxies dominate records of past temperature reconstructions, whereas our understanding of continental climate is relatively poor, particularly in high-latitude areas such as Antarctica. The recently developed MBT/CBT (methylation index of branched tetraethers/cyclization ratio of branched tetraethers) paleothermometer offers an opportunity to quantify ancient continental climates at temporal resolutions typically not afforded by terrestrial macrofl oral proxies. Here, we have extended the application of the MBT/CBT proxy into the Cretaceous by presenting paleotemperatures through an expanded sedimentary succession from Seymour Island, Antarctica, spanning the latest Maastrichtian and Paleocene. Our data indicate the existence of a relatively stable, persistently cool temperate climate on the Antarctic Peninsula across the Cretaceous-Paleogene boundary. These new data help elucidate the climatic evolution of Antarctica across one of the Earth's most pronounced biotic reorganizations at the Cretaceous-Paleogene boundary, prior to major icesheet development in the late Paleogene. Our work emphasizes the likely existence of temporal and/or spatial heterogeneities in climate of the southern high latitudes during the early Paleogene.

    Original languageEnglish
    Pages (from-to)583-586
    Number of pages4
    JournalGeology
    Volume42
    Issue number7
    DOIs
    Publication statusPublished - 2014

    Programme Area

    • Programme Area 3: Energy Resources

    Fingerprint

    Dive into the research topics of 'A cool temperate climate on the Antarctic Peninsula through the latest Cretaceous to early Paleogene'. Together they form a unique fingerprint.

    Cite this