Do you mainly study sandstone or a mix of all rocks?

Question: Do you mainly study sandstone or a mix of all rocks?
- Keywords:
  geology,
  work
Asked by draw43egg to Jess on 8 Nov 2019.
- Jessica Franklin answered on 8 Nov 2019:
  
  I mainly study sandstones, but the amazing thing about sandstones is that they are made up of tiny pieces of other types of rocks, so really I get to study them all!

Question: Do you mainly study sandstone or a mix of all rocks?