Hummocky moraine

AZ - Hummocks

Hummocky moraine
Term used to cover a wide variety of different types of moraine that form distinct mounds rather existing as a line.

Hummocks may form by some combination of:
1) by thrusting in front of or underneath a glacier,
2) erosion by ice,
3) ablation of ice containing varying amounts of debris from place to place,
4) build-up of minor deltas.