IUGS RECLASSIFICATION OF THE HIGH-MG AND PICRITIC VOLCANIC ROCKS
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dc.contributor.author | Le bas M.J. | |
dc.date.accessioned | 2021-01-28T05:18:48Z | |
dc.date.available | 2021-01-28T05:18:48Z | |
dc.date.issued | 2000 | |
dc.identifier | https://www.elibrary.ru/item.asp?id=10500393 | |
dc.identifier.citation | Journal of Petrology, 2000, 41, 10, 1467 | |
dc.identifier.issn | 0022-3530 | |
dc.identifier.uri | https://repository.geologyscience.ru/handle/123456789/23817 | |
dc.description.abstract | The 1989 IUGS classification of the igneous rocks for the high-Mg and picritic volcanic rocks has been revised. Instead of an 18 wt % MgO minimum limit being applied for all high-Mg and picritic volcanic rocks, that is now applicable only to the high-Mg rocks such as komatiite and meimechite. The minimum MgO requirement for picrite is reduced to 12 wt %. The SiO2 former boundary figure between boninite and komatiite–meimechite–picrite, which was 53 wt %, is reduced to 52 wt %, and the total alkali content for komatiite and meimechite is increased to 2% and for picrite to 3%. | |
dc.title | IUGS RECLASSIFICATION OF THE HIGH-MG AND PICRITIC VOLCANIC ROCKS | |
dc.type | Статья |
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