Physics
Scientific paper
Nov 1967
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1967gecoa..31.2125v&link_type=abstract
Geochimica et Cosmochimica Acta, vol. 31, Issue 11, pp.2125-2133
Physics
2
Scientific paper
The ratio of the two isotopes 39 K and 41 K has been measured close to the sharp contact between a granite and an amphibolite in the Spekboom area. Within the amphibolite a zone of about 3 cm shows abnormally high values of this ratio (up to 14.65). The value for the amphibolite further from the contact is close to 14.22. This behaviour is shown to be the same as that reported for an unaltered shale xenolith at Sea Point. It is further shown that the variation in isotope ratio can be qualitatively represented by assuming homogeneous diffusion of potassium from the granite into the aniphibolite.
Schreiner D. L. G.
Verbeek A. A.
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