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Isotope composition of helium in ultrabasic xenoliths from volcanic rocks of Kamchatka

Tolstikhin I.N., Mamyrin B.A., Khabarin L.B., Erlikh E.N. (1974) Isotope composition of helium in ultrabasic xenoliths from volcanic rocks of Kamchatka // Earth and Planetary Science Letters. Vol. 22, No. 1. pp. 75-84.

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Abstract

The purpose of this work is to refine our knowledge about the nature of helium with a high abundance of the rare isotope3He(3He/4He= 10−5) discovered in terrestrial volcanic gases in 1968. We will discuss here the results of isotope analyses of helium released by step-wise heating of ultrabasic xenoliths and some volcanic rocks. On the basis of these results, possible sources of3He in the earth due to fission and nuclear reactions are considered critically. The most probable source of the high abundance of3He is shown to be due to the capture and trapping of primordial He by the earth during its formation (primordial helium3He/4He= 3 × 10−4), a small but significant fraction of which has been retained to the present time.
Item Type: Article
Title: Isotope composition of helium in ultrabasic xenoliths from volcanic rocks of Kamchatka
Language: English
Journal or Publication Title: Earth and Planetary Science Letters
ISSN Print: 0012-821X
ISSN Online: 1385-013X
Subjects: 3 State scientific and technical information rubricator (ГРНТИ) > 38 ГЕОЛОГИЯ > 38.37 Петрография > 38.37.25 Вулканология
Depositing User: И.М. Романова
Date Deposited: 04 Aug 2022 00:03
Last Modified: 04 Aug 2022 00:21
URI: http://repo.kscnet.ru/id/eprint/4304

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