Geob lect 1 01/09/2014
Rocks & rock forming processes
How & where do rocks form
How do we classify rocks
How are rock classes related to one another
Most natural rocks are in fact aggregates of different minerals
Many rocks are formed in the Earth’s surface
Some rocks are formed below the surface, within Earth
How do we classify rocks – genetic specification
3 Classes of rocks
Can be eroded by chemical processes and physical processes
Chemical processes lead to ions while physical leads to particles.
Formed by a process of compaction and cementation. (slide 26).
Crystalize from molten Rocks aka mag