Mount St. Helens
Olympus Mounds
tectonic and volcanic
no
Flow, and explosive
focus
Mount St. Helens Olympus Mounds
Volcanic glasses have no crystalline structure, and technically no minerals.
Two types of moon craters are impact craters, formed by asteroids or meteoroids hitting the moon's surface, and volcanic craters, formed by volcanic activity on the moon when magma rises to the surface and erupts.
volcanic mountains
Coral and Skeleton
VOLCANIC ASH, VOLCANIC CINDERS, VOLCANIC BLOCKS & VOLCANIC BOMBS.
The 4 different types of solid pyroclastics are volcanic bombs, lapilli, volcanic ash, and volcanic blocks
No. Obsidian is just one of many types of volcanic rock.