Rocks and Roles
In Earths History
1) there are three types of rock:
Sedementary-(of rock) that has formed from sediment deposited by water or air.
Metamorphic-denoting rock that has undergone transformation by heat, pressure, or other natural agencies.
igneous-(of rock) having solidified from lava or magma.
2) An example of eacg rock would be:
Sedementary-breccia, conglomerate, sandstone and shale
Metamorphic-gneiss, phyllite, schist and slate
igenous-gabbro, granite and pegmatite
3) stratification- The relative social position of people in a given social group, category, geographical region or other social unit.
Example of a stratification rock:
Example of the rock cycle: