南极乔治王岛柯林斯冰帽小冰穹冰芯中火山喷出物的首次鉴定  

THE FIRST VERIFICATION OF VOLCANO EXTRUSIVE IN AN ICE CORE FROM LOW DOME OF COLLINS ICE CAP,KING GEORGE ISLAND, ANTARCTICA

作　　者：戴枫年[1] 宋锦熙 王远平[1] 屈建军[1] 康国定[1] 朱国才[2] 韩建康[2] 

机构地区：[1]中国科学院兰州沙漠所,兰州730000 [2]中国科学院兰州冰川冻土所,兰州730000

出　　处：《南极研究》1993年第3期75-77,共3页

基　　金：国家自然科学基金资助项目;国家南极考察委员会特别资助项目;中国科学院特别资助项目;中国科学院兰州冰川冻土所所长基金资助项目

摘　　要：对采自南极乔治王岛柯林斯冰帽小冰穹顶冰芯40～50m深度处黑色沉积物样品进行了内部结构和外部形态的观察和分析。偏光显微镜下光性鉴定表明该样品具有显著的火山喷出物指征性结构。经EPM—810Q型电子探针分析发现了样品较强的火山喷出物形貌方面的指征,全元素定性分析验征了偏光显微镜下观察到的几种特定矿物组成。这是首次在柯林斯冰帽冰芯中发现并得到鉴定的火山喷出物。A systematic investigation and analysis was conducted on inner structure and exterior morphology of the black deposits collected between 40 and 50m in depth of and ice core from Low Dome of Collins Ice Cap. King George Island, Antarctica. Optical verification under a polarizing microscope showed these black deposits have strong indicative structure of volcano extrusive. The evident indication on aspect of morphology of volcano extrusive was found through EPM-810Q type electronic probe. The whole element qualitative analysis tested and verified the several speculate mineral constitution investigated under the polarizing mi croscope. It is volcano extrusive be found and verified at the first time in an ice core from Collins Ice Cap.

关 键 词：黑色沉积物 火山喷出物 冰芯 南极 

分 类 号：P343.6[天文地球—水文科学]