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Transcript
SEDIMENTARY ROCKS are classified by the types of sediments that make up the rock
Sediments
What are
sediments?
Def:
Processes
How sediments form into sedimentary rock:
Write the steps in order w/descriptions
Erosion
(wash away)
may include shells, bones, leaves,
stems, etc
Forces –
Deposition
(drop down)
Compaction
(smashed
together)
Cementation
(glued
together)
Picture(s)
Thick layers of sediment build up over
time & weigh down the layers
compacting the sediments.
dissolved minerals seep into the
spaces between particles & then
harden
Picture(s)
Types
Clastic Rock
(Define each type:
Write the steps in
order w/descriptions
Def:
Picture
Examples:
Shale - forms from tiny particles of clay
Sandstone - forms from sand on beaches, ocean
floor, river beds, etc.
Conglomerate - forms from rounded sediment.
Breccia - forms from larger, sharp fragments of
sediments.
Def:
Coal – forms from swamp plants buried in water for
millions of years.
Organic Rock
Chemical
Rock
Uses
Building
Materials
And Tools:
Limestone – forms in the ocean from hard shells with
calcite from seashells, coral, clams & oysters or
skeletons that pile up on the ocean floor for millions
of years slowly changing the sediment to limestone
Def:
lakes & underground caves.
Rock Salt – forms from halite by evaporation
What things have been made from sedimentary rocks?
Flint –
Sandstone –
Limestone -
Fossils 
Limestone – forms from calcite in dissolved seas,