Elements of Geology —— A Text-Book for Colleges and for the General Reader

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ISBN: 9781330296813 出版年：2016 页码：657 Joseph le Conte Forgotten Books

I have confined myself mostly, though not entirely, to American geology, especially in giving the distribution of the rocks and the physical geography of the different periods. In only one case have I made American geology subordinate, viz., in the J ura-trias period, and that only because of the meagerness of the record of this period in this country.