The American Geologist —— A Monthly Journal of Geology and Allied Sciences, July to December, 1897

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ISBN: 9781330328651 出版年：2016 页码：477 Forgotten Books

Many other minor cases of parallelism of the drainage lying in these two general directions may be seen on a drainage map, but they need not be mentioned here. Attention, however, should be called to the fact that there seems to be two other systems of joints in the area here especially considered: one running north-south, the other east-west.