This is Dave. He is a very happy rock. Sadly one day he was strolling along and he accidentally fell into a river!
Dave started to like it in that river but after a little bit, he started turning into sediment! During the time he was sediment he started to get crushed by other rocks! He turned into a sedimentary rock!
This is not that bad.
I'm breaking up!
Get out of my bubble!
Dave has become a sedimentary rock from compaction and cementation but now he is on the path to becoming a metamorphic rock from heat and pressure!