Abstract
The distribution of erratics on the northern portion of the limestone district of Derbyshire is considered. These travelled stones include a few Lake District and Scottish rocks, but by far the most abundant are basalts and dolerites (‘Toadstones’) of local origin. The occurrences of the latter boulders have been plotted on maps when they appear as streams trending in a general direction from west to east. From this, the conclusion is drawn that they were transported by a glacier passing through the Dove Holes gap and spreading fanwise to the east of that gap over the limestone area.
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