My Favorite things about Angelfire.
My links for sedimentary rock
How sedimentary Rocks form
Sedimentary Rock table
The 3 basic rock types
Sedimentary Rocks were formed from compressed layers or sand and old dead fossils. There for there are more then just sedimentary rocks like if your go to the link 3 then it will tell u all the 3 different kind of sedimentary rock. The scientist also have a chart called "Sedimentary Rock Table" which they use to identify the sedimentary rock from the others that are not. There are alot of rocks out there that is not have been discovered yet so far but some enough u might find one yourself.