IUGS RECLASSIFICATION OF THE HIGH-MG AND PICRITIC VOLCANIC ROCKS

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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