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INDUSTRIAL ACCUMULATION OF MANTLE SOURCE HELIUM AND THE TANCHENGLUJIANG FRACTURE ZONE 被引量:3

INDUSTRIAL ACCUMULATION OF MANTLE SOURCE HELIUM AND THE TANCHENGLUJIANG FRACTURE ZONE
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摘要 Helium abundance in the air is only 5.3 x 10<sup>-6</sup>. <sup>3</sup>He forms as universe-nuclear is synthesized. <sup>4</sup>He is the result of α-decay of some radioactive isotopes, such as <sup>235</sup>U, <sup>238</sup>U and <sup>252</sup>Th. There are three kinds of helium sources in the earth, that is, meteoric helium, mantle source helium and crust source helium. Their distinguishing sign depends on <sup>3</sup>He/<sup>4</sup>He value.
出处 《Chinese Science Bulletin》 SCIE EI CAS 1991年第6期494-498,共5页
关键词 the Tancheng-Lujiang FRACTURE ZONE MANTLE SOURCE helium. THE TANCHENG-LUJIANG FRACTURE ZONE MANTLE SOURCE HELIUM
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