CE-1伽马能谱测量中4种月球岩石的能谱特征分析

发布时间：2018-07-24 09:55

【摘要】：从CE-1γ能谱测量获得的数据出发,对原始数据进行处理,将原始谱线按每5°×5°网格内平均而获得月表上的γ能谱数据。选取了12条不同位置分别代表玄武岩、斜长岩、富镁岩和KREEP岩的能谱曲线进行分析,发现同一岩性的谱线具有相似性。通过对每种岩性选择的一条谱线进行分析可知,不同的岩性能谱曲线有一定的差别,表现为不同岩性在元素特征能谱峰的变化不同,玄武岩的能谱曲线特征峰主要的元素为Th、K、Si、Ca、C、Fe和Ti;斜长岩的能谱曲线特征峰主要元素为U、Ca、C、Mg、Al和Mn。KREEP岩的能谱曲线特征峰主要为K、Th、U、Si、Ca和Fe,而低C和Al;富镁岩能谱曲线表现为低U、Si、Ca和Cl而高K、Mg、Th和Fe含量特征。文中给出了能较好区分不同岩性的元素特征峰能量,可为月表γ能谱的定量分析奠定基础。
[Abstract]:Based on the data obtained from the CE-1 纬 spectrum measurement, the original data are processed and the original spectral lines are obtained according to the average value in every 5 掳脳 5 掳grid to obtain the 纬 energy spectrum data on the monthly table. The energy spectrum curves of 12 different positions representing basalt, plagioclase, mafic rich rock and KREEP rock are analyzed, and it is found that the spectral lines of the same lithology are similar. Through the analysis of one spectral line selected by each lithology, it can be concluded that different lithologic spectrum curves have some differences, which are manifested by the variation of different lithology in the spectral peaks of element characteristics. The main elements of the energy spectrum curve characteristic peaks of basalts are Th _ (K) K ~ (+) Si ~ (2 +) C _ (C) C _ (C) Fe and Ti, and the main characteristic peaks of the energy spectrum curves of amphibolites are U _ (+) CaC _ (C) _ (C) _ (C) _ (Ca) and Fe _ (Fe), while the energy spectrum curves of mafic _ rich rocks are characterized by low K _ (C) H _ 2O _ (Ca) and Fe _ (Fe) and Fe (Fe). The content characteristics of Ca and Cl in Urosemide are higher than those in K _ (2) O _ (2) mg ~ (2 +) Th and Fe. In this paper, the element characteristic peak energy which can distinguish different lithology is given, which can lay a foundation for the quantitative analysis of monthly surface 纬 energy spectrum.
【作者单位】：吉林大学地球探测科学与技术学院;中核通辽铀业有限责任公司;
【基金】：国家自然科学基金项目(41372337,41373068)
【分类号】：P184.5

【参考文献】