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阿波罗15号玄武岩15555号和土壤15531号的地质化学
Science (New York, N.Y.)
|January 28, 1972
概括
阿波罗15号海岩15555显示了几个元素的最低度和月球岩中最小的负欧异常,这表明它可能是从月球返回的最不差异化的材料. 它的组成类似于阿波罗12号的玄武岩.
科学领域:
- 月球地质学和地球化学
- 地球外物质的岩石学.
背景情况:
- 阿波罗15号任务返回了各种各样的月球样本,包括海基岩.
- 了解月球玄武岩的组成,可以了解行星的演化和分化.
研究的目的:
- 为了确定阿波罗15号海洋玄武岩15555和相关矿物和土壤样本的主要和微量元素度.
- 为了比较15555玄武岩与其他月球玄武岩的组成,并了解其差异化状态.
主要方法:
- 原子吸收光谱光度计是指原子吸收光谱光度计.
- 测色仪的颜色测量方法
- 同位素稀释分析的分析.
主要成果:
- 岩15555在月球岩中显示出报告中最低的Li,K,Rb,Ba,稀土元素和Zr度.
- 在玄武岩15555中,负欧异常是观察到的最小的,这表明了最小的流石分离.
- 土壤15531可以被建模为玄武岩15555,KREEP和流石级的混合物.
结论:
- 阿波罗15号的海基岩15555可能是迄今为止分析的最不差异化的月球材料.
- 观察到的欧异常可以通过轻微的塑类结晶来解释,或者如果塑类不在液体上,则可能存在多个阶段的起源.
- 矿物学数据表明,在结晶过程中,酸盐和酸盐接近准平衡.
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