概括
阿波罗11号和12号的月球岩石显示出不同的与的比率,这表明着陆地点之间的石质混合有限. 大量月球和地球可能共享一个共同的K-U比率,不同于石.
科学领域:
- 地质化学 地质化学
- 行星科学 行星科学
- 月球地质学 月球地质学
背景情况:
- 阿波罗11号和阿波罗12号任务返回了各种不同的月球岩石样本.
- (K) 和 (U) 是理解行星演变的关键微量元素.
- 之前的研究表明,月球表面组成的潜在差异.
研究的目的:
- 为了研究阿波罗11号和阿波罗12号月球岩套件的- (K-U) 丰度系统学.
- 为了评估Mare Tranquillitatis和Oceanus Procellarum之间规质物质交换的程度.
- 为了比较月球的K-U比率与氏体和地球地岩石的比率.
主要方法:
- 在阿波罗11号和阿波罗12号月球样本中分析K和U度.
- 系统地比较两个样本组之间的K-U比率.
- 用地面和石数据进行比较地化学分析.
主要成果:
- 在阿波罗11号和阿波罗12号样本之间观察到K-U丰度系统的显著差异.
- 这些差异表明Mare Tranquillitatis和Oceanus Procellarum之间的规律岩交换是最小的.
- 两个月球套件似乎都来自具有相同K和U含量的材料.
- 大量月球物质中的K-U比率不太可能与氏体的比例相匹配.
- 月球和地球地的K-U比率之间的差异并不排除地球和月球共同的K-U比率.
结论:
- 阿波罗11号和12号的着陆场所代表着不同的 regolith省份,材料转移有限.
- 月球和地球可能具有共同的K-U比率,这挑战了基于体石的先前假设.
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