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首页> 外文期刊>Contributions to Mineralogy and Petrology >Crystallization sequence of the Upper Border Series of the Skaergaard Intrusion: revised subdivision and implications for chamber-scale magma homogeneity
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Crystallization sequence of the Upper Border Series of the Skaergaard Intrusion: revised subdivision and implications for chamber-scale magma homogeneity

机译：Skaergaard侵入岩上部边界系列的结晶序列：修正后的细分及其对室尺度岩浆同质性的影响

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摘要

Although it is one of the best-studied layered mafic intrusions in the world, the crystallization sequence of the Skaergaard Intrusion, east Greenland, remains in debate. In particular, it has been argued that the crystallization sequence in the Upper Border Series, which crystallized downwards from the roof of the magma chamber, differs from that in the Layered Series formed at the floor. The proposed deviation would require chemical stratification of the magma, and a reexamination of the crystallization sequence therefore has important implications for understanding the dynamics of the system. Here, we examine a new sample set from the Upper Border Series, combining field observations, petrography and anorthite contents of plagioclase with bulk rock Ti, V, P, Cu and Mn concentrations.
机译：尽管它是世界上研究最多的分层铁镁质岩侵入体之一，但格陵兰岛东部的Skaergaard岩侵入体的结晶序列仍在争论中。特别是，有人提出，从岩浆室顶部向下结晶的上边界系列的结晶顺序与在地层形成的分层系列的结晶顺序不同。拟议的偏差将需要对岩浆进行化学分层，因此对结晶序列的重新检查对于理解系统动力学具有重要意义。在这里，我们研究了上边界系列的新样本集，结合了野外观测，岩相学和斜长石的钙长石含量与大块Ti，V，P，Cu和Mn的浓度。

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