Page:Transactions of the Geological Society, 1st series, vol. 2.djvu/69

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59
Dr. Berger on the Isle of Man

other, a subsidence to the south of the whole chain “en masse” took place, which caused the three dislocations referred to in the course of this paper, and which are nearly at right angles with the direction of the chain itself.[1]

2. That the same subsidence may be supposed to have produced the general dip of the stratified rocks to the southwards.

  1. At Spanish head, on the spot called Kione-Gogan, (a head resembling a noggin) the strata have been rent asunder in two contrary directions. The contiguous sides being now several yards distant the one from the other. The principal rent runs north and south, the transverse one east and west, presenting an assemblage of four large square compartments.

    Is this referable to the great subsiding pointed out above? or more likely, to the cause that gave origin to the metallic veins, and particularly to the cross course at Foxdale?

    The grey-wacke slate of Spanish head splits naturally into long beams 12 or 15 feet long, it for mantle-trees, and strong enough to bear the weight of the highest stack of chimnies.─Wilson's History of the Isle of Man.

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