Major and trace element data of clinopyroxenes and clinopyroxene-hosted trachytic melt inclusions from the Samoan hotspot track.

Abstract: Major and trace element analyses in clinopyroxene and their enclosed melt inclusions. The clinopyroxenes and inclusions are found within a single Samoan hotspot lava, ALIA-D115 (Jackson et al., 2007), from Savai'i Island, western Samoa. This lava exhibits the second-highest 87Sr/86Sr value ever recorded for an ocean island lava. The melt inclusions are trachytic in composition and could reflect magma source characteristics beneath Samoa. The inclusions were never heated and are thought to be relatively pristine exhibiting minor post-entrapment modification. See Adams et al. (in revision, G-cubed) for more details about post-entrapment modification and melt inclusion compositional reconstruction. Other Description: Adams, J.V., Spera, F.J., and Jackson, M.G., (in revision, G-cubed), "Trachytic Melt Inclusions Hosted in Clinopyroxene Offer a Glimpse into Samoan EM2-endmember Melts"摘要：针对单斜辉石（clinopyroxene）及其所包裹的熔体包裹体（melt inclusions）开展主量元素与微量元素分析。所分析的单斜辉石与熔体包裹体均采自萨摩亚西部萨瓦伊岛的ALIA-D115号萨摩亚热点（Samoan hotspot）熔岩（Jackson等，2007）。该熔岩的87Sr/86Sr比值为迄今已记录的大洋岛熔岩中第二高值。本次研究的熔体包裹体成分为粗面质，可用于反映萨摩亚下方的岩浆源区特征。这些包裹体未经过加热处理，被认为相对原始，仅存在轻微的捕后改造作用。有关捕后改造作用与熔体包裹体成分重建的更多细节，可参考Adams等（待刊，G-cubed）的研究。 其他说明：Adams, J.V.、Spera, F.J.与Jackson, M.G.（待刊，G-cubed）的论文《单斜辉石所包裹的粗面质熔体包裹体：窥探萨摩亚EM2端元熔体的窗口》