Clasts are local.
Has some similar characteristics to glacial till, but far traveled erratics, striations, and context usually allow a distinction to be made. In this photo, from just outside of Cody Wyoming, colluvium has been deposited on alluvium. The red dashed lines traces the contact. The alluvium is composed of well rounded and sorted, dark volcanic clasts from the upstream Absaroka volcanics that have been stacked into an imbricate pattern by river flow. Some larger colluvium blocks of lighter colored limestone that fell into the channel during deposition are preserved in the river alluvium.