富含水晶的泥解释了花岩的放置温度和持续时间
Alex Copley1, Owen Weller2, Hero Bain2,3
1Department of Earth Sciences, University of Cambridge, Cambridge, UK. acc41@cam.ac.uk.
Scientific reports
|August 23, 2023
概括
花岩入侵发生在一个富含水晶的泥中,而不是连续的堤. 这一发现影响了对大陆生长和冥王星形成的理解.
科学领域:
- 地质地质地质地质地质地
- 石化学 石化学是一门学科.
- 构造学 构造学 构造学 构造学
背景情况:
- 讨论了花岩的入机制,温度和时间表.
- 这些因素对于理解大陆的生长,分化,回形学和变形至关重要.
研究的目的:
- 开发一种方法来确定花岩沉积温度和时间表.
- 将这种方法应用于英格兰北部的Skiddaw花岩.
主要方法:
- 分析围绕花岩入侵的变形光环.
- 根据光环特征估计安置温度和时间尺度.
主要成果:
- 估计沉积时间范围为0.1-2万年.
- 隐含的岩运输速度为每年1-100毫米.
- 建议作为预先固化的,富含晶体的泥尿布进行侵入,而不是连续注射.
结论:
- 石岩的安置很可能以一种富含水晶的泥的尿布形式发生.
- 风病是由低分数 (580-650°C) 的固体晶体控制的.
- 冥王星的特征可能反映出预置位结晶;置位深度接近脆性-柔性过渡.
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