This document lists different types of rocks categorized as either detrital or chemical in formation. Detrital rocks include arkose, breccia, conglomerate, coquina, quartz sandstone, and siltstone which form from eroded material. Chemical rocks form from mineral precipitation and include chalk, chert, coal, crystalline limestone, flint, fossiliferous limestone, rock gypsum, rock salt, shale, and travertine.

1. Arkose, Breccia, Chalk, Chert, Coal, Conglomerate, Coquina, Crystalline limestone, Flint, Fossiliferous limestone, Quartz sandstone, Rock gypsum, Rock salt, Shale, Siltstone, TravertineDetrital – (Formation) -- Chemical<br />