L1 /
2
CH3041
TERRESTRIAL
CHEMISTRY II
•The
surface of the Earth is called the crust,
a region that descends to around 40km.
a region that descends to around 40km.
• The composition
is primarily siliceous
rocks with a
low density
2.0-3.3 g cm-3.
rocks with a
low density
2.0-3.3 g cm-3.
• It is the
increase in r
that marks
the start of the
upper mantle
lying beneath
the crust.
increase in r
that marks
the start of the
upper mantle
lying beneath
the crust.
(12-60km)
