马昌前

• 1:中国地质大学地球科学学院及岩石圈演化与矿产资源重点实验室 湖北武汉430074

摘要(Abstract)：

与大陆地壳广泛出露的花岗岩不同,在月球表面仅发现了少量细小的花岗岩碎屑,此外有长英质组分以熔体包裹体形式出现于月球玄武岩的矿物中。月球花岗岩碎屑的主要矿物为石英、钾长石和钙质斜长石,具花斑状结构;含少量铁橄榄石、单斜辉石、钛铁矿、锆石、磷灰石、白磷钙矿等矿物,缺少含水矿物。月球花岗岩富K2O,富Ba,相容元素(Cr、Sc、Co、V)含量比其它月岩低,具有平坦或V型的REE型式,负Eu异常明显。它们的化学特征可以用硅酸盐液态不混熔来解释。月球花岗岩的结晶年龄在4.4～3.9Ga间,具有至少8个年龄峰,可能代表了与花岗岩形成相关的8次独立的岩浆事件。由于月球花岗岩成因和分布对于认识月球演化和岩浆作用历史至关重要,在新一轮的深空探测中,应更加重视对月球花岗岩的研究。

关键词(KeyWords)： 月球花岗岩;熔体包裹体;硅酸盐液态不混熔;岩石成因

Abstract:

Keywords:

基金项目(Foundation): 高等学校博士点基金资助项目(20010491018);; 国家自然科学基金资助项目(40334037)

作者(Author): 马昌前

Email:

DOI:

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