DOI: 10.1038/ngeo2140
论文题名: Eruption style at Kilauea Volcano in Hawai'i linked to primary melt composition
作者: Sides I.R. ; Edmonds M. ; Maclennan J. ; Swanson D.A. ; Houghton B.F.
刊名: Nature Geoscience
ISSN: 17520894
出版年: 2014
卷: 7, 期: 6 起始页码: 464
结束页码: 469
语种: 英语
Scopus关键词: chemical composition
; igneous geochemistry
; magma chamber
; mantle plume
; mantle source
; melt
; melt inclusion
; ocean island basalt
; volcanic eruption
; Hawaii [(ISL) Hawaiian Islands]
; Hawaii [United States]
; Hawaiian Islands
; Kilauea
; United States
英文摘要: Explosive eruptions at basaltic volcanoes have been linked to gas segregation from magmas at shallow depths in the crust. The composition of primary melts formed at greater depths was thought to have little influence on eruptive style. Ocean island basaltic volcanoes are the product of melting of a geochemically heterogeneous mantle plume and are expected to give rise to heterogeneous primary melts. This range in primary melt composition, particularly with respect to the volatile components, will profoundly influence magma buoyancy, storage and eruption style. Here we analyse the geochemistry of a suite of melt inclusions from 25 historical eruptions at the ocean island volcano of Kilauea, Hawai' i, over the past 600 years. We find that more explosive styles of eruption at Kilauea Volcano are associated statistically with more geochemically enriched primary melts that have higher volatile concentrations. These enriched melts ascend faster and retain their primary nature, undergoing little interaction with the magma reservoir at the volcano' s summit. We conclude that the eruption style and magma-supply rate at Kilauea are fundamentally linked to the geochemistry of the primary melts formed deep below the volcano. Magmas might therefore be predisposed towards explosivity right at the point of formation in their mantle source region. © 2014 Macmillan Publishers Limited. Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/106602
Appears in Collections: 气候减缓与适应 科学计划与规划
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作者单位: Earth Sciences Department, University of Cambridge, Cambridge CB2 3EQ, United Kingdom; Hawaiian Volcano Observatory, US Geological Survey, Hawaìi National Park, Hawaìi 96718, United States; Department of Geology and Geophysics, University of Hawaìi, Honolulu, HI 96822, United States
Recommended Citation:
Sides I.R.,Edmonds M.,Maclennan J.,et al. Eruption style at Kilauea Volcano in Hawai'i linked to primary melt composition[J]. Nature Geoscience,2014-01-01,7(6)