Here's why:
* Angular Pebbles: The key characteristic of breccia is the presence of angular fragments. These fragments are sharp-edged and haven't been rounded by erosion or transportation.
* Formation: Breccia forms when rock fragments are broken up by events like landslides, volcanic eruptions, or tectonic activity. The fragments are then cemented together by minerals, creating the rock.
Contrast with Conglomerate:
* Conglomerate is another sedimentary rock that contains pebbles, but the pebbles in conglomerate are rounded. This indicates that the pebbles have been transported a longer distance and have been smoothed by abrasion.
