A volcanic marker (92 ka) for dating deep east Antarctic ice cores

Biancamaria Narcisi, Jean Robert Petit, Massimo Tiepolo

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Tephra layers recorded in East Antarctic ice enable reliable linking over long distances and, when correlated with well-dated eruptions in the source area, provide absolute ages for improving the accuracy of model-based ice chronology. We used chronostratigraphic information and grain-specific geochemical data (major elements by electron microprobe and trace elements by LA-ICP-MS) to suggest that a tephra layer from the EPICA-Dome C and Dome Fuji ice cores is the distal counterpart of the Mt. Berlin (Marie Byrd Land province, West Antarctica) pyroclastic unit40Ar/39Ar dated to 92.5±2.0 and 92.2±0.9 ka. Such one-to-one correlation, which is proposed here for the first time for the East Antarctic deep climatic archives, provides independent age constraints for glaciological modelling of core timescales. © 2006 Elsevier Ltd. All rights reserved.
Original languageEnglish
Pages (from-to)2682 - 2687
Number of pages6
JournalQuaternary Science Reviews
Issue number21-22
Publication statusPublished - Nov 2006
Externally publishedYes


All Science Journal Classification (ASJC) codes

  • Earth-Surface Processes

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