Mineral chemistry, bulk composition and source of the ferromanganese nodules nuclei from the Central Indian Ocean Basin

被引：5
|
作者：
Banerjee, R [1 ]
Miura, H
机构：
[1] Natl Inst Oceanog, Geol Oceanog Div, Dona Paula 403004, Goa, India
[2] Hokkaido Univ, Dept Earth & Planetary Sci, Grad Sch Sci, Sapporo, Hokkaido 060, Japan
来源：
GEO-MARINE LETTERS | 1998年 / 18卷 / 01期
关键词：
D O I：
10.1007/s003670050053
中图分类号：
P [天文学、地球科学];
学科分类号：
07 ;
摘要：
Nuclei of ferromanganese nodules from the Central Indian Ocean Basin show the presence of abundant plagioclase feldspars (1-3 mm diameter). They are identified as calcic plagioclase (peak at 3.20 Angstrom). Plagioclase chemical composition (CaO 6.4-20.5%) shows a range of An 44-90%. The mineral chemistry, together with the bulk composition of the host nuclei, indicate that they are of basaltic composition. A possible source could be the numerous seamounts in this basinal area.
引用
收藏
页码：66 / 69
页数：4
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