Breccias

thumb|right|Basalt breccia in the [[Canary Islands; green groundmass is composed of epidote ]] thumb|Megabreccia (left) at Titus Canyon Narrows, [[Death Valley National Park, California]] thumb|Tertiary breccia at Resting Springs Pass, Mojave Desert, California thumb|Unusual breccia cemented by azurite and [[malachite, Morenci Mine, Arizona]]

thumb|Hyaloclastite between Pillow lava|pillows of lava in [[Montana]] thumb|Pahoehoe|Pahoehoe lava enters the Pacific at [[Hawaii Volcanoes National Park, the Big Island of Hawaii]]

type of green serpentinite breccia rock with a high calcite content

breccia formed by tectonic forces