what is the most common sedimentary rock?
Since this is not my area of expertise, I searched Google under the key words "sedimentary rock common" to get these possible sources:
http://www.cartage.org.lb/en/themes/Sciences/Earthscience/Geology/RocksandMinerals/MineralsandRocks/Sedimentary/mainpage.htm
http://jersey.uoregon.edu/~mstrick/RogueComCollege/RCC_Lectures/Sedimentary.html
http://en.wikipedia.org/wiki/Sedimentary_rock
http://www.gpc.edu/~pgore/geology/geo101/sedrx.htm
http://www.britannica.com/ebi/article-207388
I hope this helps. Thanks for asking.
thanks you rock