Sedimentary rock Flashcards
1
Q
1.Are made from?
A
Build up of layers of rock in rivers lakes or oceans
2
Q
- they contain layers called?
A
Strata
3
Q
2.Sediment turned into rock by?
A
Lithification
4
Q
2.During this process the great weight of?
A
Layers of sediment conpact grains of rock.
5
Q
2.Minerals such as? leak out?
A
calcite silica
6
Q
2.sedimentary rocks may be?
A
Organic , inorganic or chemical
7
Q
3.Organic sedimentary rock is made up of?
A
Millions of layers of dead plants and animals
8
Q
during lithification great weight of?
A
sediment causes calcite in shells to cement grains together
9
Q
Inorganic is formed when?
A
eroded particles of igneous or metamorphic rock are eroded they build up under water and are cemented together by lithification
10
Q
Chemically formed are?
A
evaporation of sea water from inclosed lakes . Gypson and salt are left behind
