Editing Boulder (section)

== About ==
In places covered by [[ice sheet]]s during [[ice age]]s, such as [[Scandinavia]], northern [[North America]], and [[Siberia]], [[glacial erratic]]s are common. Erratics are boulders picked up by ice sheets during their advance, and deposited when they melt.<ref name="Boulder" /> These boulders are called "erratic" because they typically are of a different rock type than the [[bedrock]] on which they are deposited. One such boulder is used as the [[pedestal]] of [[the Bronze Horseman]] in [[Saint Petersburg]], Russia.

Some noted [[rock formation]]s involve giant boulders exposed by [[erosion]], such as the [[Karlu Karlu / Devils Marbles Conservation Reserve|Devil's Marbles]] in [[Australia]]'s [[Northern Territory]], the [[Horeke basalts]] in [[New Zealand]], where an entire [[valley]] contains only boulders, and [[The Baths]] on the island of [[Virgin Gorda]] in the [[British Virgin Islands]].

Boulder-sized [[Clastic rock|clast]]s are found in some [[sedimentary rock]]s, such as coarse [[conglomerate (geology)|conglomerate]] and [[boulder clay]].