SEDIMENTARY ROCK TYPES

CLASTIC SEDIMENTS: GRAINS PRODUCED BY MECHANICAL OR CHEMICAL WEATHERING AT EARTH'S SURFACE

(EXAMPLE: SANDSTONE)

BIOCHEMICAL SEDIMENTS: MATERIAL OF ORGANIC (LIVING THINGS) ORIGIN SUCH AS SHELL OR CORAL FRAGMENTS

(EXAMPLES: LIMESTONE, COAL)

CHEMICAL SEDIMENTS: INORGANIC CHEMICALS PRECIPITATED (CRYSTALIZED) FROM WATER (EXAMPLE: SALT DEPOSITS)