What is another word for glacial boulder?
Pronunciation: [ɡlˈe͡ɪʃə͡l bˈə͡ʊldə] (IPA) 
Glacial boulder, a term used to describe a large rock deposited by a glacier, can also be referred to as an erratic or a glacial erratic. These massive rocks may be different from the local bedrock and can be found far from their source due to the movement of ice during glaciation. Another synonym for glacial boulder is a driftstone, which is a non-indigenous rock type that differs from the bedrock in the surrounding area. These fascinating rocks provide geologists with valuable information about the history of the earth's climate and the movement of ice sheets. Whatever you choose to call them, glacial boulders are a fascinating reminder of the planet's everchanging geological past.
