Articles | Volume 34, issue 1
J. Micropalaeontol., 34, 59–64, 2015
https://doi.org/10.1144/jmpaleo2013-032
J. Micropalaeontol., 34, 59–64, 2015
https://doi.org/10.1144/jmpaleo2013-032

  01 Jan 2015

01 Jan 2015

Effect of diagenetic recrystallization on the strength of planktonic foraminifer tests under compression

Paul N. Pearson1, Sam L. Evans2, and James Evans1 Paul N. Pearson et al.
  • 1School of Earth and Ocean Sciences, Cardiff University, Main Building, Park Place, Cardiff CF10 3AT, UK
  • 2Cardiff School of Engineering, Cardiff University, Queen’s Buildings, The Parade, Cardiff CF24 3AA, UK

Keywords: foraminifera, diagenesis, Tanzania, ODP Site 865

Abstract. We present the results of experiments to measure the brittle failure of fossil planktonic foraminifer tests under compression. We compare two upper Eocene species of contrasting morphology, Cribrohantkenina inflata (Howe, 1928) and Turborotalia cerroazulensis (Cole, 1928) in both well-preserved material from the Kilwa Group of Tanzania and recrystallized material from ODP Site 865, central Pacific Ocean. Well-preserved tests were several times stronger than recrystallized tests. Turborotalia cerroazulensis was stronger than C. inflata in both the well-preserved and recrystallized material.