For 10 points, give the common term for the hills associated with Rogen moraines, which begin to accumulate sediment in the grooves on the bottom of ice sheets and glaciers.
The formation of one of these, which is essentially the opposite of a Roche moutonnee, was first observed in 2007 in the Rutford Stream. Frequently occurring in clusters of hundreds called fields or swarms and commonly associated with landscapes called sheepbacks, they have tapered ends pointing in the direction of motion of their creators. Though there are both rock and depositional varieties, they are generally formed from till. For 10 points, give the common term for the hills associated with Rogen moraines, which begin to accumulate sediment in the grooves on the bottom of ice sheets and glaciers.
The formation of one of these, which is essentially the opposite of a Roche moutonnee, was first observed in 2007 in the Rutford Stream.
{drumlin}