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

Research output: Contribution to journalArticleResearch

Authors

  • Patrick Arneitz
  • Yael Engbers
  • David Pryce
  • Andrew Biggin

Organisational units

External Organisational units

  • Geomagnetism Laboratory, School of Environmental Sciences, University of Liverpool
  • ZAMG
  • Levelwood, St. Helena Island

Abstract

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.

Details

Original languageEnglish
Pages (from-to)14
Number of pages1
JournalCOBS Journal
Volume2020
Issue number6
Publication statusPublished - 1 Jan 2021