Sedimentary Rocks Flashcards
1
Q
types of sedimentary rocks
A
-clastic sedimentary rocks
-chemical sedimentary rocks
-organic sedimentary rocks
2
Q
clastic sedimentary rocks are made from…
A
debris from earlier rocks
3
Q
organic sedimentary rocks are made from…
A
debris of organic materials eg. plant materials
4
Q
what is an example of an organic sedimentary rock
A
coal
5
Q
chemical sedimentary rocks are made from…
A
the accumulation of materials eg. shells and crystals without the need for biological activity
6
Q
as clastic sedimentary rocks are buried they are…
A
lithified by compaction and or cementation
7
Q
during compaction and or cementation what happens to the debris
A
it compresses the air and water out of the spaces between the debris in which crystals grow form the water eg. quartz and calcite
8
Q
A
