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丹麦哥本哈根大学地质博物馆David. Bridgwater教授是著名的太古宙地质学家。他在格陵兰和拉布拉多等地区工作有二十五年之久。他对高级变质区的区域地质、岩石学、地球化学和同位素地质等方面有较高的造诣。1985年10月,应地质矿产部的邀请,来华与天津地质矿产研究所副研究员孙大中等人合作,研究冀东地区太古宙岩石的有关问题。继为时三周的冀东野外地质考察之后,David. Bridgwater教授于10月底至11月初在天津讲学。全部讲学均由张一钧担任翻译。讲课内容充实生动,引用了大量的格陵兰和拉布拉多的实际资料,比较详细地讲解了该地区的地质、特别是岩石、构造、微量元素地球化学、同位素年代学和地球化学等问题。现根据录音记录,将讲学内容整理成文。全文共四讲,其中第一、二两讲由张一钧整理,第三、四两讲由杨春亮整理。
Professor David. Bridgwater, Geological Museum, University of Copenhagen, Denmark, is a famous Archean geologist. He has worked in Greenland and Labrador for twenty-five years. He has high attainments in regional geology, petrology, geochemistry and isotopic geology of advanced metamorphic areas. In October 1985, at the invitation of the Ministry of Geology and Mineral Resources, he came to China to work with Sun Dazhong, associate researcher of Tianjin Institute of Geology and Mineral Resources, to study the related problems of Archean rocks in the eastern part of Hebei Province. Following a three-week geological survey of the Jidong Field, Professor David. Bridgwater gave a lecture in Tianjin from late October to early November. All lectures by Zhang Yijun as a translator. The lectures are full and vivid, citing a large amount of actual data from Greenland and Labrador. They give a detailed explanation of the geology in the area, especially rock, tectonics, trace element geochemistry, isotopic geochronology and geochemistry. According to the recording records, the lectures will be collated. The full text of a total of four stresses, of which the first two or two by Zhang Yijun finishing, the third and the fourth two by Yang Chunliang finishing.