NEON ISOTOPES IN SUBMARINE BASALTS
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dc.contributor.author | Sarda P. | |
dc.contributor.author | Staudacher T. | |
dc.contributor.author | Allègre C.J. | |
dc.date.accessioned | 2020-04-17T08:19:52Z | |
dc.date.available | 2020-04-17T08:19:52Z | |
dc.date.issued | 1988 | |
dc.identifier | https://elibrary.ru/item.asp?id=31488633 | |
dc.identifier.citation | EARTH AND PLANETARY SCIENCE LETTERS, 1988, 91, 1-2, 73-88 | |
dc.identifier.issn | 0012-821X | |
dc.identifier.uri | https://repository.geologyscience.ru/handle/123456789/16974 | |
dc.description.abstract | Very large neon isotopic anomalies have been accurately measured in mid-ocean ridge basalt glassy samples from diverse locations worldwide. Values for20Ne/22Ne range up to ∼ 13 and21Ne/22Ne values range up to ∼ 0.07 (present atmospheric values are20Ne/22Ne= 9.8 and21Ne/22Ne= 0.029). The data are highly correlated in the20Ne/22Ne—21Ne/22Ne diagram, independent of sample location. Loihi seamount data show an atmospheric neon isotopic composition, which is consistent with previous He—Ar—Xe data and their interpretation as representative of a deep undegassed mantle source. Recent mixing within the mantle best explains the neon isotopic features, as well as the He—Ne—Ar—Xe relationships. We propose that the MORB21Ne/22Ne anomalies are due to nuclear reactions within the mantle. The origin of the20Ne/22Ne anomalies however cannot be explained in a straightforward way and we discuss several scenarios. | |
dc.title | NEON ISOTOPES IN SUBMARINE BASALTS | |
dc.type | Статья |
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