A Miocene polarity transition recorded on St. Helena, South Atlantic

Elisabeth Schnepp, Patrick Arneitz, Yael Engbers, David Pryce, Robert Scholger, Roman Leonhardt, Andrew Biggin

Research output: Contribution to journalArticleResearch


Paleomagnetic sampling was undertaken in locations with successions of lava ows on St. Helena in April 2019. Two parallel pro_les recorded transitional _eld directions of a reversal from reversed to normal polarity. The lavas ows are part of the SW Upper Shield and have an age of _9.0 Ma. Determinations of paleointensity and 39Ar/40Ar dating are currently under work. The detailed characterization of the polarity transition will allow for Earth's magnetic _eld modelling and provides
a better understanding of the South Atlantic Magnetic Anomaly.
Original languageEnglish
Pages (from-to)14
Number of pages1
JournalCOBS Journal
Issue number6
Publication statusPublished - 2021


  • paleomagnetism
  • polarity transition
  • South Atlantic

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