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Janne Koornneef is an isotope geochemist studying the composition of the Earth’s mantle and the volcanic rocks derived from it. She aims to understand the processes that control the compositional variability of lavas and has a specific interest in melt- and fluid related processes within the mantle. She uses multiple isotope systems (U-series, Nd, Sr, Hf, Pb) in combination with major- and trace element chemistry of mantle and volcanic rocks to look at: (1) mantle melting rates and melt transport times (2) the influence of source heterogeneity on the melting process and lava compositions; (3) Recycling fluxes in subduction zones (4) mantle metasomatism and diamond formation processes in subcratonic mantle.


As a post-doc Janne worked on technique development using the latest generation mass spectrometer (TRITON-Plus TIMS) to measure small geological samples for their Sr, Nd and Pb isotope compositions. In collaboration with the manufacturer of the instrument she developed techniques to use the latest design 1012 and new 1013 Ohm feedback resistors that lead to a significant improvement in signal to noise ratios and therefore precision. She established the benefit of the now commercially available 1013 Ohm amplifiers over default 1011 Ohm amplifiers in multiple applications of small sample analyses (mineral inclusions in diamonds, melt inclusions in olivine, dust from ice cores etc). She supervises multiple PhD and MSc students in their research projects to apply the techniques to analyse sub ng samples. 

She is PI of the ERC-STG funded project "ReVolusions" that aims to Quantify Recycling fluxes of Earth surface materials and Volatiles in subduction zones by use of melt inclusions and co-PI in the Europlanet programme (www.europlanet-2020-ri.eu/) that will be relaunched in Feb 2020 (Europlanet 2024 RI).

Visit her personal website at: jannekoornneef.nl

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Fingerprint Dive into the research topics where J.M. Koornneef is active. These topic labels come from the works of this person. Together they form a unique fingerprint.

  • 9 Similar Profiles
Isotopes Chemical Compounds
melt inclusion Earth & Environmental Sciences
Ionization Chemical Compounds
Mass spectrometry Chemical Compounds
Trace Elements Chemical Compounds
isotope Earth & Environmental Sciences
mantle Earth & Environmental Sciences
Resistors Chemical Compounds

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Research Output 2008 2019

Ancient recycled lower crust in the mantle source of recent Italian magmatism

Koornneef, J. M., Nikogosian, I., van Bergen, M. J., Vroon, P. Z. & Davies, G. R., 19 Jul 2019, In : Nature Communications. 10, p. 1-10 10 p., 3237.

Research output: Contribution to JournalArticleAcademicpeer-review

Open Access
Earth mantle

Competing droughts affect dust delivery to Sierra Nevada

Aarons, S. M., Arvin, L. J., Aciego, S. M., Riebe, C. S., Johnson, K. R., Blakowski, M. A., Koornneef, J. M., Hart, S. C., Barnes, M. E., Dove, N., Botthoff, J. K., Maltz, M. & Aronson, E. L., 1 Dec 2019, In : Aeolian Research. 41, p. 1-11 11 p., 100545.

Research output: Contribution to JournalArticleAcademicpeer-review

dry season
Open Access
melt inclusion
Trace Elements

Highly heterogeneous depleted mantle recorded in the lower oceanic crust

Lambart, S., Koornneef, J. M., Millet, M. A., Davies, G. R., Cook, M. & Lissenberg, C. J., 1 Jun 2019, In : Nature Geoscience. 12, 6, p. 482-486 5 p.

Research output: Contribution to JournalArticleAcademicpeer-review

oceanic crust
lower crust
crustal recycling
Open Access
melt inclusion
Trace Elements
trace element

Activities 2013 2013

  • 1 Lecture / Presentation

Wetenschap en wetenschapsfilosofie

J.M. Koornneef (Speaker)
26 Sep 2013

Activity: Lecture / PresentationAcademic

Press / Media

Uitbarsting van Bardarbunga vulkaan op IJsland

J.M. Koornneef


1 media contribution

Press/Media: Other