The debris created by glacial scouring and forms moraines is called ...

Glacial till

Explanation:

Glacial till are usually defined as the particles or sediments that are weathered and eroded during the time of glacial movement down the hills. These sediments are brought down into the lower levels, and give rise t the formation of different types of moraines such as the lateral, medial and the terminal moraine. These sediments are of variable sizes and not well sorted.