"Great beds of conglomerate occur at the bottom of the Carboniferous, in various parts of Scotland, which it is difficult to believe are other than ancient morainic débris. They are frequently quite unstratified, and the stones often show that peculiar blunted form which is so characteristic of glacial work."[3]
Professor Ramsay found well-scratched and blunted stones in a Permian conglomerate.
In the north of Scotland, a coarse, bowlder-conglomerate is associated with the Jurassic strata. The Cretaceous formation has yielded great stones and bowlders. In the Eocene of Switzerland, erratics have been found, some angular and some rounded. They often attain great size; one measured one hundred and five feet in length, ninety feet in breadth, and forty-five feet in height. Some of the blocks consist of a kind of granite not known to occur anywhere in the Alps.
Geikie says:
"The occurrence in the Eocene of huge ice-carried blocks seems incomprehensible when the general character of the Eocene fossils is taken into account, for these have a somewhat tropical aspect. So, likewise, the appearance of ice-transported blocks in the Miocene is a sore puzzle,
[1. "The Great Ice Age," p. 478.
2. Ibid., p. 479.
3. Ibid.]
{p. 435}
as the fossils imbedded in this formation speak to us of tropical and sub-tropical climates having prevailed in Central Europe."[1]