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Journal of Micropalaeontology An open-access journal of The Micropalaeontological Society
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Volume 35, issue 2
J. Micropalaeontol., 35, 229-231, 2016
https://doi.org/10.1144/jmpaleo2015-046
© Author(s) 2016. This work is distributed under
the Creative Commons Attribution 4.0 License.
J. Micropalaeontol., 35, 229-231, 2016
https://doi.org/10.1144/jmpaleo2015-046
© Author(s) 2016. This work is distributed under
the Creative Commons Attribution 4.0 License.

  24 Jul 2016

24 Jul 2016

Taphonomic impact of ultrasonic treatment on foraminifera from a deep-sea carbonate ooze

Rik Van Bael1, Arne Deprez1, Peter Stassen1, André Bornemann2, and Robert P. Speijer1 Rik Van Bael et al.
  • 1Department of Earth & Environmental Sciences, KU Leuven, Celestijnenlaan 200E, B3001 Heverlee, Belgium
  • 2Bundesanstalt für Geowissenschaften und Rohstoffe, Stilleweg 2, 30655 Hannover, Germany

Abstract. The selection and identification of foraminifera in chalky, partially silicified sediments can be problematic, as was experienced with upper Danian (Paleocene) samples from Newfoundland Ridge (IODP Expedition 342 Site 1407). Ultrasound treatment can potentially improve the liberation and identification of foraminifera by removing fine-grained material from the tests, leading to reduced processing time. However, this process is potentially destructive and can alter the composition of foraminiferal assemblages by reducing fragile taxa from the record, similar to the effects of dissolution (Nguyen et al. 2011).

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