Composition of garnet and clinopyroxene in peridotite xenoliths from the Grib kimberlite pipe, Arkhangelsk diamond province, Russia: Evidence for mantle metasomatism associated with kimberlite melts
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- 作者：A.V. Kargina ; kargin@igem.ru" class="auth_mail" title="E-mail the corresponding author ; L.V. Sazonovaa ; b ; sazonovalv52@mail.ru" class="auth_mail" title="E-mail the corresponding author ; A.A. Nosovaa ; nosova@igem.ru" class="auth_mail" title="E-mail the corresponding author ; V.V. Tretyachenkoc ; VTretiyachenko@severalmaz.ru" class="auth_mail" title="E-mail the corresponding author
- 关键词：Peridotite xenolith ; Mantle metasomatism ; Lithospheric mantle ; Kimberlite ; Garnet ; Clinopyroxene
- 刊名：Lithos
- 出版年：2016
- 出版时间：1 October 2016
- 年：2016
- 卷：262
- 期：Complete
- 页码：442-455
- 全文大小：4884 K
文摘
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Peridotites are divided into two groups formed by different metasomatic processes.
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The first group contains high-Ti garnets and low-Mg# clinopyroxenes.
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The second group contains low-Ti garnets and high-Mg# clinopyroxenes.
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The metasomatic agent changes its composition during evolution of kimberlite magma.
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The sequence of metasomatic events is proposed.