Text-book of geology. v. 2

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• 责任者：Geikie ; Archibald
• 责任方式：Written
• 出版者：Macmillan and Co. Ltd.
• 出版年：1903
• 出版地：London
• 出版日期：1903/1/1 0:00:00
• 分类号：205
• 语言：English

摘要

THE lithological differences of eruptive rocks having already been described in Book Ⅱ.(p. 195), it is their larger features in the field that now require attention,--features which, in some cases, are readily ex-plicable by the action of modern volcanoes and which, in other cases, by bringing before us parts of the economy of volcanoes never observable in any recent cone, reveal deep-seated rock-structures that lie beneath the upper or volcanic zone of the terrestrial crust.