COUPLED CE-ND ISOTOPE SYSTEMATICS AND RARE EARTH ELEMENTS DIFFERENTIATION OF THE MOON
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dc.contributor.author | Tanimizu M. | |
dc.contributor.author | Tanaka T. | |
dc.date.accessioned | 2021-09-17T06:49:06Z | |
dc.date.available | 2021-09-17T06:49:06Z | |
dc.date.issued | 2002 | |
dc.identifier | https://elibrary.ru/item.asp?id=1259337 | |
dc.identifier.citation | Geochimica et Cosmochimica Acta, 2002, 66, 22, 4007-4014 | |
dc.identifier.issn | 0016-7037 | |
dc.identifier.uri | https://repository.geologyscience.ru/handle/123456789/30289 | |
dc.description.abstract | 138Ce/142Ce and 143Nd/144Nd isotope ratios of lunar samples are determined to constrain the petrogenetic differentiation and evolution of the moon. High-precision Ce-Nd isotope data, well-defined Rb-Sr isochrons, and rare earth elements (REE) abundances of lunar samples show that unexpectedly low La/Ce ratios of evolved lunar highland samples are preserved from at least 3.9 Ga. Precise analysis of REE abundances indicates that the low La/Ce ratio results from a depletion of La relative to other REE. This depletion can be seen in pristine KREEP basalts and Mg-suite rocks from 3.85 to 4.46 Ga. As REE abundances of all these samples are controlled by the presence of a KREEP component, the depletion was probably inherited from a late crystallization sequence of the lunar magma ocean related to the production of the original KREEP component. | |
dc.title | COUPLED CE-ND ISOTOPE SYSTEMATICS AND RARE EARTH ELEMENTS DIFFERENTIATION OF THE MOON | |
dc.type | Статья |
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