In this image, volatiles that were driven off of the subducting slab have caused the mantle to melt. What kind of melting does this figure show?Click to view larger image.

Volcanic eruptions vary in size from very small to extremely large events. This image shows the different stages of a cataclysmic eruption. What type of eruption is shown by this sequence of images?Click to view larger image.

The __________ can flow while the __________ is a rigid solid.

Interlude-B

Olympus Mons, the largest known volcano in our Solar System, is an example of a ________.

During the past 5 million years, approximately how long have chrons lasted before the next major magnetic polarity reversal?

Aside from the Earth, the terrestrial planets are

Gemstones are often found in pegmatites, which are igneous rocks that are

The following image shows samples, both in hand sample and in microscope thin-section views. The textures are the result of their emplacement mechanism (intrusive, extrusive, or pyroclastic). Match the texture term with the appropriate picture set.Click to view larger image.

Grains become rounded primarily during