我国低钛月海型模拟月壤初始物质选择的地球化学依据

THE GEOCHEMISTRY EVIDENCE FOR SELECTING THE SUITABLE RAW MATERIAL IN CHINA TO SIMULATE THE LOW TITANIUM LUNAR SOIL FROM LUNA-SEA BASALT

以Apollo14月壤样品和美国JSC-1模拟月壤的地球化学特征为基础,结合我国低钛玄武岩火山的分布,对我国不同地区新生代玄武岩的化学成分、年龄、储量等方面进行对比分析结果表明,滇西北金沙江地区和吉林辉南红旗林场-四海地区的玄武质火山喷发物的化学成分与Apollo14月壤样品和美国JSC-1模拟月壤相似,比较适合用于我国低钛月海玄武岩模拟月壤研制的初始物质。野外地质调查发现,吉林省辉南县金川镇红旗林场—四海一带产出的玄武质火山渣为距今1600 a的该玄武质火山岩的喷发物,其储量大、质地纯、粒度均匀,而且比滇西北金沙江地区最近一期的玄武质火山渣新鲜,最适合作为我国低钛月海玄武岩模拟月壤研制的初始物质。

The geochemistry characteristics of the lunar soil sample obtained in Apollo14 mission and the lunar soil simulations （JSC-1） were used to compare and contrast with the relative density, chemical and mineral composition of Cenozoic basalt volcanic in China. The result shows that the chemical and mineral composition of Cenozoic basalt volcanic collected at Jinchuan, Jinlin Province are extremely similar to the lunar soil sample obtained in Apollo14 mission and the lunar soil simulations （JSC-1）. It is indicated that the basalt and volcanic breccia from Jinchuan are characteristic of uniform grain size, pure texture and large reserves. These volcanic products can be used as the original matters to simulate the low titanium lunar soil production.