3. . The layers range from several millimeters to
many meters in thickness and vary greatly in
shape. Strata may range from thin sheets that
cover many square kilometers to thick lens
like bodies that extend only a few meters
laterally.
4. Stratification in sedimentary rocks may result
from changes in texture or composition during
deposition; it also may result from pauses
in deposition that allow the older deposits to
undergo changes before additional sediments
cover them.
5. WHY IT IS CALLED STRATIFIED?
• The sediments of rocks are compressed and
cemented together due to heavy pressure to
form sedimentary rocks. This formation takes
place in layers. Therefore, sedimentary rocks are
also known as stratified rocks.