Page:Transactions of the Geological Society, 1st series, vol. 2.djvu/318

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Dr. Mac Culloch on the Junction of Trap, &c..

during the deposition of the greenstone bed, yet some other expedient must be resorted to before the curvature of the sandstone stratum can be accounted for. The explanation afforded by the Huttonian hypothesis is too apparent to require notice.

Whether this hypothesis be esteemed well founded or not, it must rest on a much wider basis than that of the mere phenomena which accompany the trap rocks. But if we consider those rocks with the appearances which I have now described, and which they so often exhibit, we may safely conclude that no hypothesis is competent to explain geological phenomena at large, which does not admit of the forcible displacement of the strata which accompany them, and on which the marks of violence are so evidently impressed.