388 



MILFORD HAVEN — CHASM IN THE OLD RED SANDSTONE. 



The great ruptures in this formation are well displayed in the cliffs of Milford Haven. 

 To enumerate all these faults and breaks would be tedious if not impracticable. One 

 remark, however, is essential : the strata on the opposite sides of the estuary, either 

 where it is broad, or towards its upper extremities about Lawreny, where it narrows 

 to the width of a river, have never the same dip, being tilted in opposite or divergent 

 directions ; thus proving, that this magnificent, land-locked estuary, quite unparalleled 

 in Great Britain for the depth of its water and the security of its haven, was produced by 

 a violent rupture of the strata. (See arrows on the map indicating the dislocations.) 



In the next chapter we shall consider the Silurian, Cambrian and Trap rocks of this 

 county, concluding with some general observations on the direction of the deposits. 



