Physics
Scientific paper
Apr 2007
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2007e%26psl.256..567c&link_type=abstract
Earth and Planetary Science Letters, Volume 256, Issue 3-4, p. 567-576.
Physics
13
Scientific paper
The presence of potassium in the core is a vexing issue in Earth Science that is of fundamental concern to the energy budget of the Earth. New experimental data reported here for partitioning of potassium (K) between peridotitic silicate melt and Fe Ni S C O molten alloy at 1650 2200 °C and 1.0 7.7 GPa reveal a negligible effect of pressure on K partitioning, at least up to 7.7 GPa. No evidence for a systematic increase of K solubility in the alloy with temperature or pressure and S or C contents in the alloy was found. However, there is a possible increase in the K partition coefficient with increasing O content in the molten alloy. Our results, which are appropriate to model core formation in a shallow magma ocean, suggest it is unlikely to sequester more than a few tens of ppm of K into Earth's core during a magma ocean event if oxygen is not a major contributor to the light element budget of the core.
Corgne Alexandre
Fei Yingwei
Keshav Shantanu
McDonough William F.
No associations
LandOfFree
How much potassium is in the Earth's core? New insights from partitioning experiments does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.
If you have personal experience with How much potassium is in the Earth's core? New insights from partitioning experiments, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and How much potassium is in the Earth's core? New insights from partitioning experiments will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-1079109