Abstract:I
t
is a well-known fact to those who have traversed large areas of uncovered crystalline rocks, that they present a structure more or less vertical. In North America, Scotland, and Sweden the diversified edges of the crystalline series may he traced for many miles, presenting a north-easterly structural hearing. Where argillaceous sedimentary beds have been deposited on crystalline rocks, having the above vertical structure strongly developed, I have frequently observed the latter, by … Show more
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