A rock formed by lithification of glacial till (unsorted, unstratified glacial sediment).
A rock formed from hardened ancient glacial deposits and consisting of larger clasts distributed through a matrix of sandstone and mudstone.
Tillite - A sedimentary rock, formed when unconsolidated sediments are consolidated into solid rock under the influence of a glacier.
glacial till cemented into a solid rock.
a sedimentary rock composed of till. Generally considered evidence of pre-Pleistocene glaciations, but identification (compared to landslide debris, for example) can be difficult.
a rock composed of consolidated till
A sedimentary rock formed from consolidation of glacial drift (till), which is deposited directly by and underneath a glacier, and consists of a heterogeneous mixture of clay, silt, sand, gravel and boulders