Rare Earth Elements and Yttrium in Carbonate Reef Deposits Containing Hydrocarbons of Oil and Gas
Abstract: For the first time anomalies in the behaviour of cerium and europium simultaneously among other REE are discovered in the processes of sedimentation." The reasons of differentiation of certain lanthanides in the composition of REE and fractioning of REE in reef deposits fractions are...
| Published in: | World Applied Sciences Journal Vol. 24, № 2. P. 256-266 |
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| Format: | Article |
| Language: | English |
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| Online Access: | http://vital.lib.tsu.ru/vital/access/manager/Repository/vtls:000470133 Перейти в каталог НБ ТГУ |
| Summary: | Abstract: For the first time anomalies in the behaviour of cerium and europium simultaneously among other REE are discovered in the processes of sedimentation." The reasons of differentiation of certain lanthanides in the composition of REE and fractioning of REE in reef deposits fractions are considered with the presence of hydrocarbons of oil and gas as the main components affecting the stabilization of an unusual valence state of certain lanthanides able to change valence depending on the oxidation-reduction conditions in sedimentary cycle. According to the recorded anomalies of certain lanthanides in the range of REE the arguments are given supporting the possibility of REE isomorphism occurrence with the displacement of Ca and Mg by Nd and Tb and yttrium by holmium. Also the possible factors are considered defining relationship of REE with the derivatives of oils and bitumoids, namely with their high-molecular compounds (tars, oils and pyrobitumens containing N, S and O). |
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| Bibliography: | Библиогр.: 26 назв. |
| ISSN: | 1818-4952 |