This used to be sand and other sediment - that's why it is called sandstone - which is a type of sedimentary rock. Sedimentary rocks are formed when pieces of rock are eroded, or worn away ...

Petrology is the study of rocks - igneous, metamorphic ... the genesis of accessory minerals such as REE phosphates in all rock types, the origins of economic concentrations of minerals and petroleum, ...

This is a beginner's guide to identifying UK rock types. The guide has two main sections ... sedimentary and metamorphic rocks This is followed by a glossary of geological terms that are used in the ...