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部分化岩石的微图:在地幔中三维化物分布
Wenlu Zhu1, Glenn A Gaetani, Florian Fusseis
1Department of Geology, University of Maryland, College Park, MD 20742, USA. wzhu@umd.edu
概括
上层地幔是上层的地幔.
科学领域:
- 地质物理学 地质物理学
- 地质化学 地质化学
- 石化学 石化学是一门学科.
背景情况:
- 上层地幔的透性对于在扩散中心以下的融分离至关重要.
- 了解部分融化岩石的运输特性是解决海洋脊观测差异的关键.
研究的目的:
- 为了研究在部分化地幔中化的分布和网络拓.
- 为了确定控制海洋山脊下孔隙性和融化提取的因素.
主要方法:
- 三维融分布数据是使用X射线同步离子显微断层学获得的.
- 分析了带有不同融分数的地幔桃石样本.
主要成果:
- 在低化分数 (0.02) 时,化网络主要由沿粒边的三连接形成.
- 没有观察到融提取特征的根本变化,因为融分数增加到0.2.
- 部分化的区域的多孔性是由粘性紧缩和化速率决定的.
结论:
- 融化拓不会随着融化分数的增加而突然改变.
- 海洋山脊下的多孔性是压缩和融化之间的动态平衡,而不是拓变化.
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