Spectroscopy and Spectral Analysis, Volume. 37, Issue 2, 599(2017)
Plasma Mass Spectrometry of Sea Mountain Basalts in the Western Pacific and Its Geological Significance
Seamount basalts recorded important information of seamount and deep evolution process. Through the analysis of petrology and REE geochemical characteristics of Govorov Guyot, Niulang Guyot, Arnold Guyot, Skornyakova Guyot, Gordin Guyot, McDonnell Guyot, Lingyi Seamount, Xufu Seamounts basalts in the western Pacific, it shows that basalts in study area have amygdaloidal, fumarolic-amygdaloidal and porphyritic texture. Rocks are mainly composed of phenocrysts and matrix. Mineral composition of phenocrysts is mainly plagioclase, olivine and clinopyroxene. Mineral composition of matrix is plagioclase, olivine, clinopyroxene and glassy etc. REE patterns and parameters of each sea mountain basalts reflect the typical characteristics of oceanic island basalts. It indicates that the seamount in study area is a typical volcanic seamount in plate caused by multiple hotspots. At the same time, it may have been influenced by multi-stage fault and magmatic activity.
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L Wen-chao, ZHU Ben-duo, ZHANG Huo-dai, YAO Hui-qiang. Plasma Mass Spectrometry of Sea Mountain Basalts in the Western Pacific and Its Geological Significance[J]. Spectroscopy and Spectral Analysis, 2017, 37(2): 599
Received: Jan. 29, 2016
Accepted: --
Published Online: Jun. 20, 2017
The Author Email: Wen-chao L (lvwenchao01@163.com)