"WardsSci000756"

Gray to tan clastic rock made of silt sized particles.

Breccia is a sedimentary rock made up of angular rock fragments.

Obsidian is hard black colored, volcanic glass.

Scoria is a dark-colored rock formed from lava with a high gas content.

Gray metamorphosed shale showing "slaty cleavage".

Gray to white metamorphosed carbonate rock.

Conglomerate is a sedimentary rock made up rounded quartz pebbles.