CHARACTERISTICS OF TILL DEPOSITS

Poor shorting. There is a large in-grain size, with large clasts upto boulder size frequently contained in a finer, sometimes clayey matrix
Lack of stratification, laminations and graded bedding (progressive change in grain size with depth) are generally absent except in deposits modified by meltwater which may exhibit stratification.
Mixture of lithologies. Particles may have been derived from widely separated sources, especially in the case of deposits laid down by large ice sheets.
Frequent presence of particles with abraded facets and striations
Preferred orientation of particles.
Compaction associated with pressures developed during deposition
Overlies striated rock or sediments basement
Predominantly subangular particles due to combination of fracturing and rounding by abrasion