What are the three broad classifications of rock type? How is each produced?
The three main classifications of rock are igneous, sedimentary and metamorphic. Igneous rocks are produced by volcanic eruptions and form via the solidification of lava. Sedimentary rocks form via the erosion of other rocks. As sediment compacts it will bind to form a sedimentary rock. Metamorphic rocks form via the alteration of other rocks. Alteration takes place via high temperatures and pressures.
BR
Related Geology A Level answers
All answers ▸“The formation of economic deposits of hydrocarbons and coals solely results from the thermal alteration of organic material” Evaluate this statement with reference to geological processes.
Describe how regional metamorphism of shale produces a sequence of rocks and minerals.
How can you tell the environment a sedimentary rock is deposited in?
What are some hypotheses to explain the Permo-Triassic mass extinction? (when 95% of marine invertebrates and 77% of land species became extinct)