论文部分内容阅读
1982年,瑞典国家勘探公司和耶姆特兰矿勘探公司在上瑞典中部耶姆特兰省以每39.1km~2一个样的采样密度,完成了一项覆盖面积达37780km~2的冰碛层采样地球化学普查.研究地区西部下伏有加里东造山带岩层(以寒武一志留系沉积为主),而其中部和东部则以前寒武纪花岗岩、片麻岩、伟晶岩、辉绿岩和变质杂砂岩为主.该区有比较连续的冰碛层.冰川擦痕指示
In 1982, the Swedish National Exploration Company and the Jämtrain Exploration Company completed a moraine layer covering 37,780 km 2 at a sampling density of 39.1 km -2 per sample in the middle of the province of Jämätran in central Sweden. Sampling Geochemical Census: The Caledong orogenic belts (mainly Cambrian-Silurian sediments) are located in the western part of the study area, while the central part and the eastern part are dominated by Precambrian granite, gneiss, pegmatite, diabase And metamorphic miscellaneous sandstone. The area has a relatively continuous moraine layer. Glacial scratches indicate