Page:Transactions of the Geological Society, 1st series, vol. 2.djvu/507

Rh of original deposition on an unequal surface, or of subsequent dislocation, appear to promise any plausible solution.

The average height of the cliffs, as far as we could judge by the eye, is 130 or 140 feet; they are traversed in many places by steep ravines running from north to south, and numerous outlying masses of rock shew themselves above the sea at a small distance from low-water mark, a character uniformly presented by the stratified rocks along the whole of the Northern coast.

In some parts the compact grauwacke was wanting for a considerable distance, in such cases the forms which the slate had assumed were rather angular than curvilinear. In the sections of those which have been called saddle-shaped strata, we observed usually that the dip was more precipitous on the western side. In neither variety of the rock could we discover any traces of organic remains, nor could we perceive any imbedded fragments that should indicate their having been formed from the debris of an earlier rock. The strata are traversed by numerous veins of opaque white quartz, but no appearances of any other mineral substances occurred.

The Drawings annexed, (Pl. 33 and 34,) indifferently executed as

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