Читать книгу The Evacuation of England: The Twist in the Gulf Stream онлайн

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“The discussion of this question opens up for our consideration the examination of the geological structure of these oscillating terranes, as to what these are made up of, and it is evident that we must reach some general conclusion as to the succession of the strata composing them, and their relative positions to each other, as whether they are, in the language of stratigraphy, conformable or unconformable. The inference and argument are simple. If we find that the rocks composing these sections are crystalline, ancient, and deeply bedded formations, presumably coexistent, so to speak, with the original or very early formative beds of the world, and referable to its beginnings, we are permitted, by all the analogies of induction and deduction, to assume that these rocks have at least a relative stability. On the other hand if our examination reveals the fact that they are recent deposits, more or less unconsolidated, easily disturbed in their positions, easily readjusted in their molecular or physical structure, then by the most unexceptional and matter-of-fact observation, we shall regard them as questionably permanent, indeed as unmistakably non-resistant to the subterranean forces of terrestrial mutation.