hi, could any1 tell me in basic words on "the environment and process of formation of schist and sandstone??

Question

Since this is not my area of expertise, I searched Google under the key words "'formation process' schist sandstone" to get these possible sources:

http://www.shareyourexpertise.com/content/view/11/42/
(Broken Link Removed)
http://www.seafriends.org.nz/enviro/soil/geosoil.htm
http://www.allnaturalstone.co.uk/AboutStone.htm
http://72.14.253.104/search?q=cache:-JRG_sPUPc8J:www.sp.uconn.edu/~lliu/G229Lect05032Rockmaterial.pdf+%22formation+process%22+schist+sandstone&hl=en&ct=clnk&cd=37&gl=us&client=safari

Use <Find> within the sites for your key words. The last site contains some other terms that might be productive in expanding your search. I hope this helps. Thanks for asking.