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DOI: 10.1002/2016GL071331
论文题名:
Electromagnetic evidence for volatile-rich upwelling beneath the society hotspot, French Polynesia
作者: Tada N.; Tarits P.; Baba K.; Utada H.; Kasaya T.; Suetsugu D.
刊名: Geophysical Research Letters
ISSN: 0094-8321
EISSN: 1944-8052
出版年: 2016
卷: 43, 期:23
起始页码: 12021
结束页码: 12026
语种: 英语
英文关键词: hotspot ; marine magnetotellurics ; partial melt ; three-dimensional inversion ; volatiles
Scopus关键词: Magnetotellurics ; Sea level ; Silicates ; Electrical conductivity ; High conductivity ; Hot spot ; Magnetotelluric surveys ; Mineral physics ; Partial melt ; Silicate melts ; Volatiles ; Structural geology
英文摘要: We have conducted a seafloor magnetotelluric survey that images, for the first time, three-dimensional electrical conductivity structure in the upper mantle beneath the Society hotspot. A striking feature in our model is a high-conductivity anomaly a few hundred kilometers in diameter, which is continuous from the lowest part of the upper mantle to a depth of approximately 50 km below sea level. Using theoretical and experimental results from mineral physics, we interpret the high-conductivity anomaly as evidence of the melt fraction up to 2.2 vol.%, which is robust regardless of assumed temperature, and the existence of carbonated silicate melt beneath the hotspot. Our results suggest that the Society hotspot is a pathway for ascending volatiles from the deeper part of the upper mantle to the surface. ©2016. American Geophysical Union. All Rights Reserved.
URL: https://www.scopus.com/inward/record.uri?eid=2-s2.0-85006176689&doi=10.1002%2f2016GL071331&partnerID=40&md5=c72045ceac947154ebc24c1ad920b788
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资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/9284
Appears in Collections:科学计划与规划
气候变化与战略

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作者单位: Japan Agency for Marine-Earth Science and Technology, Yokosuka, Japan

Recommended Citation:
Tada N.,Tarits P.,Baba K.,et al. Electromagnetic evidence for volatile-rich upwelling beneath the society hotspot, French Polynesia[J]. Geophysical Research Letters,2016-01-01,43(23).
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