Sedimentary rocks
Sedimentary rocks
Sedimentary rock is made out of sediments. When Sediments are pressed together, it forms a rock. A type of sedimentary rock is sandstone. Concrete is artificial sedimentary rock.
Some sedimentary rocks found in Michigan are petroleum, natural gas, salt, gypsum, and limestone.
source: Discovery education (link is too long so I named the site instead) :3
source for the rocks found in Michigan: https://www.google.com/webhp?sourceid=chrome-instant&ion=1&espv=2&ie=UTF-8&safe=active&ssui=on#q=igneous+rocks+found+in+Michigan&safe=active&ssui=on
Photo used under Creative Commons from n4rwhals