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Chinese Journal of Oceanology and Limnology

, Volume 26, Issue 4, pp 459–468 | Cite as

Geochemistry of the lava and its implications in Musicians Seamounts

  • Chuanshun Li (샮뒫쮳)
  • Yucheng Pan (엋폱돉)
  • Anchun Li (샮낲뒺)
  • Batiza Rodey
Article

Abstract

Chemical and isotopic data of the lava samples dredged in the southern Bach Ridge and the northern Italian Ridge of the Musicians Seamounts province, northeast of Hawaii. Although most of the samples analyzed are generally altered, a few are fresh. The latter exhibits similar geochemical and isotopic characteristics to normal MORB (Mid-Ocean Ridge Basalts). There are systematic geochemical trends from hotspot to mid-ocean ridge in the province. Incompatible element and isotopic variations suggest that the flow field had at least two distinct parental magmas, one with higher and one with lower MgO concentrations. The two parental magmas could be related by a magma mixing model. The major and trace element modeling shows that the two parental magmas could not have been produced by different degrees of melting of a homogeneous mantle source, but they are consistent with melting of a generally depleted mantle containing variable volumes of embedded enriched heterogeneity enriched interbeds.

Keyword

Musicians Seamounts geochemistry hotspot mid-ocean ridge ridge-hotspot interaction 

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Copyright information

© Chinese Society for Oceanology and Limnology, Science Press and Springer-Verlag Berlin Heidelberg 2008

Authors and Affiliations

  • Chuanshun Li (샮뒫쮳)
    • 1
    • 2
  • Yucheng Pan (엋폱돉)
    • 3
  • Anchun Li (샮낲뒺)
    • 1
  • Batiza Rodey
    • 3
  1. 1.Key Laboratory of Marine Geology and Environment, Institute of OceanologyChinese Academy of SciencesQingdaoChina
  2. 2.Graduate SchoolChinese Academy of SciencesBeijingChina
  3. 3.Department of Geology and GeophysicsUniversity of HawaiiHonoluluUSA

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