A Volcanologist.
That would be Mt. Fuji.
im not sure
seismogram
Bassalt is the scientific name, it is a common extrusive volcanic rock. It is usually grey to black and fine-grained due to rapid cooling of lava at the surface of a planet.
They thought they were lunar "seas" like the oceans on earth. They are actually vast plains. But even today, they are still called "seas".Many early astronomers thought the dark spots on the moon were "seas". That is how all the lunar maria got their name, such as "Mare Tranquillitatis" which translates into "The Sea of Tranquility".
The Mid Atlantic-Rift is the name for the region of volcanic activity in the Atlantic ocean.
Scientists who study the universe are known as cosmologists.
Volcanoe
Well scientists do study them but there isn't an actual name of the study of them.
archeologist
paleontologist
Astronomer
boner jockeys
Paleontologist
See related links.
The Ring of Fire.
Penis