When two glaciers flow together, one marginal moraine from each will coalesce to form a medial moraine.
The clouds were just coming up as we halted on the medial moraine.
A medial moraine cannot be formed in this way, since no rock fragments can fall so far out from the sides.
A short distance above the glacier's terminus the medial moraine and the ever-broadening marginal bands come together.
When two glaciers unite, their inside lateral moraines join and form a medial moraine.
On the medial moraine one mile from the front there was no measureable displacement.
See under moraine.