A dolerite, also called a diabase, is an igneous rock, which means it was generated from the cooling and solidification of molten Earth material. It is also referred to as a volcanic rock. More »

Seafloor spreading is an oceanic process involving the formation of new oceanic crust through the solidification of basaltic magma at mid-ocean ridges. This process is a partial explanation for the process of Continental... More »

The term batholith refers to a large body of igneous rock that is formed below the surface of the earth because of the intrusion and solidification of magma. A batholith usually consists of coarse-grained rocks, such as ... More »

The scientific name for a lava rock is "igneous rock," which is formed through the cooling and solidification of magma or lava. As explained by Geology.com, igneous rocks are classified as either extrusive or intrusive. More »

Pumice is an igneous rock formed by the rapid cooling and depressurization of volcanic magma with a high gas content. It is characterized by a large amount of vesicles formed from gas bubbles in the magma. More »

Muck fires start when a surface fire burns down into loose organic material. The material that makes up the smoldering embers can start a blaze long after the original fire has burned out. Muck fires spread underground a... More »

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Tar is a derivative of a variety of organic material, commonly consisting of small animals and plants, decomposed by high temperatures and limited exposure to oxygen. This process is referred to as destructive distillati... More »