Hot Student Stories

Fine-grained, extrusive rocks include all of the following EXCEPT ____. a. granite c. basalt b. scoria d. pumice

Rodney Fox

in Social studies

1 answer

1 answer

Mindee Nelson on May 2, 2018

Basalt, Slag, which is also a type of basalt and Pumice are extrusive rocks, whereas the Granite is a rock that was intrusive. Instrusive rocks, as the name suggests, are formed within the crust of the Earth, and tend to solidify slowly. This causes them to be coarse-grained. Extrusive rocks are formed outside of the crust of the Earth and tend to cool and solidify faster than intrusive rocks. Therefore, these rocks are smooth and of fine grain.

Add you answer