What is the feature of sedimentary rock?
1- direction of fining – generally speaking if there are repeated sequences of the grains going from coarser to finer “graded bedding is perhaps the most usefull index of stratigraphic order availible to the structural geologist” John Roberts, The Macmillan field guide to geological structures” 1989 p28 The the coarser is at the bottom, finer at the top 2 – sedimentary structures such as sole casts 3 -Tangential cross bedding -however angular cross bedding is not usually able to give way up information
