Physics
Scientific paper
May 1959
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1959gecoa..16..181b&link_type=abstract
Geochimica et Cosmochimica Acta, vol. 16, Issue 1-3, pp.181-186
Physics
2
Scientific paper
Measurements have been made on radon and thoron associated with gas and condensate samples from fumaroles and pools, situated along the Rotorua-Taupo graben. Methods of collection and measurement are briefly described. The values of radon to gas ( R ) range from 0.8 × 10 -9 to 320 × 10 -9 curies/litre (c/I.) for pools and 0.32 × 10 -9 to 340 × 10 -9 c/I. for fumaroles. Radon to condensate values ( R c ) for fumaroles fall in the range of 7 × 10 -9 to 340 × 10 -9 c/I. of condensate. Variations in discharges of radon and thoron have been related to geology, i.e. there is a greater radioactive discharge from acid igneous regions than from intermediate igneous regions. The ratio of the average of the R c -values for fumaroles in the acid igneous region to the average of the B c -values for fumaroles in the intermediate igneous regions is equal, within experimental error, to the ratio of the -counting rates of the surface rocks of the two regions. It is therefore suggested that it is steam or water which is responsible for bringing the radioactive gases to the earth's surface.
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