Breccia can be found near landslides, fault zones and cryptolithicexplosion events. A breccia zone located near fault zones can varydrastically in size from inches to several yards. The other type is a gray rock known as lunar breccias. They are found at volcanic eruptions on Earth.

Where are breccias formed?

Breccia forms where broken, angular fragments of rock or mineral debris accumulate. One of the most common locations for breccia formation is at the base of an outcrop where mechanical weathering debris accumulates. Another is in stream deposits a short distance from the outcrop or on an alluvial fan.

Where is conglomerate found in the world?

These conditions are found in streams, lakes, and oceans in many parts of the world. Conglomerates often begin when a sediment consisting mainly of pebble- and cobble-size clasts is being deposited.