Sandstone and siltstone glacial erratics

Description: Specimens from boulder clay . Bed No2 in Kendall's 'Glacial Geology of the Isle of Man' 'See. 'In Lioar Manninagh' Vol.I page 440. Two samples of light olive grey siltstone and one sample is greyish red, fine-grained (?andesite).

Taxonomic name: glacial erratic: sandstone and siltstone

Collection: Natural History Geology Collection