Seismic evidence for a tilted mantle plume and north-south mantle flow beneath Iceland

Yang Shen; Sean C. Solomon; Ingi Th. Bjarnason; Guust Nolet; W. Jason Morgan; Richard M. Allen; Kristin Vogfjord; Steinun Jakobsdottir; Ragnar Stefansson; B. R. Julian

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Seismic evidence for a tilted mantle plume and north-south mantle flow beneath Iceland

机译：冰岛下方的地幔柱倾斜和南北地幔流动的地震证据

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Shear waves converted from compressional waves at mantle discontinuities near 410- and 660-km depth recorded by two broadband seismic experiments in Iceland reveal that the center of an area of anomalously thin mantle transition zone lies at least 100 km south of the upper-mantle low-velocity anomaly imaged tomographically beneath the hotspot. This offset is evidence for a tilted plume conduit in the upper mantle, the result of either northward flow of the Icelandic asthenosphere or southward flow of the upper part of the lower mantle in a no-net-rotation reference frame.

机译：冰岛两次宽带地震实验记录的在410和660 km附近的地幔不连续处的压缩波转换而成的剪切波显示，异常稀薄的地幔过渡带区域的中心位于上地幔低点以南至少100 km速度断层成像在热点下方的速度异常。此偏移量是上地幔中羽状导管倾斜的证据，这是在无网旋转参考系中冰岛软流圈向北流动或下地幔上部向南流动的结果。

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《Earth and Planetary Science Letters: A Letter Journal Devoted to the Development in Time of the Earth and Planetary System》 |2002年第4期|共12页
作者
Yang Shen; Sean C. Solomon; Ingi Th. Bjarnason; Guust Nolet; W. Jason Morgan; Richard M. Allen; Kristin Vogfjord; Steinun Jakobsdottir; Ragnar Stefansson; B. R. Julian;
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正文语种 eng
中图分类天文学、地球科学;
关键词
mantle plumes; transition zones; discontinuities; convection; Iceland;

机译：地幔柱;过渡带;间断性;对流;冰岛;

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1. Seismic evidence for a tilted mantle plume and north-south mantle flow beneath Iceland [J] . Yang Shen, Sean C. Solomon, Ingi Th. Bjarnason, Earth and Planetary Science Letters: A Letter Journal Devoted to the Development in Time of the Earth and Planetary System . 2002,第3a4期

机译：冰岛下方的地幔柱倾斜和南北地幔流动的地震证据
2. Olivine chemistry reveals compositional source heterogeneities within a tilted mantle plume beneath Iceland [J] . Earth and Planetary Science Letters: A Letter Journal Devoted to the Development in Time of the Earth and Planetary System . 2020,第期

机译：橄榄石化学揭示了冰岛下方倾斜的地幔羽毛内的组成源异质性
3. Metasomatism of the Pan-African lithospheric mantle beneath the Damara Belt, Namibia, by the Tristan mantle plume: geochemical evidence from mantle xenoliths [J] . Anton le Roex, Cornelia Class Contributions to Mineralogy and Petrology . 2014,第2期

机译：特里斯坦地幔柱在纳米比亚达马拉地带以下泛非洲岩石圈地幔的交代作用：地幔异岩的地球化学证据
4. Nature of the mantle roots beneath the North American craton: mantle xenolith evidence from Somerset Island kimberlites [C] . S.S. Schmidberger, D. Francis International symposium on deep structure and evolution of continents . 1999

机译：北美克拉顿下面的地幔根的性质：来自Somerset Island Kimberlites的地幔Xenolith证据
5. Seismic structure and dynamics of the mantle transition zone beneath the Yellowstone hotspot: Evidence for an upper mantle plume. [D] . Fee, David. 2004

机译：黄石热点下的地幔过渡带的地震结构和动力学：上地幔柱的证据。
6. Seismic evidence for a cold serpentinized mantle wedge beneath Mount St Helens [O] . S. M. Hansen, B. Schmandt, A. Levander, -1

机译：圣海伦斯山下的蛇形化地幔楔冷的地震证据
7. Seismic evidence for a tilted mantle plume and north–south mantle flow beneath Iceland [O] . Yang Shen, Sean C. Solomon, Ingi Th. Bjarnason, 2002

机译：冰岛下方倾斜的披风羽毛和南北地幔流动的地震证据

Seismic evidence for a tilted mantle plume and north-south mantle flow beneath Iceland

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