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加拿大人一直认为他们与其以南的美国邻居有很大区别,现在他们从地质方面得到了证实。新的研究发表在《地质》期刊杂志第四期,这两个北美国家早在1.2亿年前所形成的不同岩石界面与行政国界相符。卡尔加里(Calgary)大学地球科学系的安德鲁.雷尔(Andrew Leier)博士提出美国与加拿大之间在1亿～2亿年前的白垩纪时期为一高山,从这个高地流下来的古河水系和不同沉积物分别流向了这两个国家,这是形成两国界线组成岩石不同的主因。
Canadians always think they are very different from their neighbors to the south of the United States, and now they have been confirmed by the geological. The new study, published in the fourth issue of Journal of Geology, shows that the different rock interfaces formed by these two North American countries as early as 120 million years ago are in line with administrative boundaries. Andrew Leier, Ph.D., of the Department of Earth Sciences at the University of Calgary, proposed that the Cretaceous period between the United States and Canada, between 100 and 200 million years ago, be a high mountain, Different sediments flow to these two countries respectively, which is the main reason for the formation of rocks that make up the boundary between the two countries.