Where Do You Find Clastic Rocks?

Where Do You Find Clastic Rocks? A thin section of a clast (sand grain), derived from a basalt scoria. Vesicles (air bubbles) can be seen throughout the clast. … Claystone from Montana. Conglomerate. Breccia. … Sandstone from Lower Antelope Canyon. Basalt breccia, green groundmass is composed of epidote. How are clastic rocks deposited? Clastic Sedimentary