Geochemical record of subduction initiation in the sub-arc mantle: Insights from the Loma Caribe peridotite (Dominican Republic)
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- 作者：Claudio Marchesia ; b ; claudio@ugr.es" class="auth_mail" title="E-mail the corresponding author ; Carlos J. Garridob ; Joaquí ; n A. Proenzac ; Ká ; roly Hidasb ; Marí ; a Isabel Varas-Reusb ; Lidia Butjosac ; John F. Lewisd
- 关键词：Caribbean ; Hydrous melting ; Ophiolite ; Peridotite ; Subduction initiation
- 刊名：Lithos
- 出版年：2016
- 出版时间：May 2016
- 年：2016
- 卷：252-253
- 期：Complete
- 页码：1-15
- 全文大小：1753 K
文摘
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Protoliths of the Loma Caribe peridotites melted at 1–2 GPa and 1250 °C–1500 °C.
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Peridotites record initial low degrees of melting of a garnet lherzolite precursor.
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Melting in the spinel stability field was triggered by flux of slab fluids/melts.
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Peridotites formed during incipient subduction beneath the Greater Antilles paleo-arc.
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Most ophiolites in the N Caribbean are related to subduction and not to a plume.