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2
CH3041
GEOCHEMICAL CYCLES II
•
Biogeochemical cycles are
models
using
the best available data to track the
movement of an element (
fluxes
) through
the different
reservoirs
.
A lot of work is
still going on to fill in gaps in the mass
balances of the element cycles
eg. carbon.
Plants
Animals
humans
ATMOSPHERE
Space
Surface
Biota
Deep
Estu-
aries
Soil
Igneous
&
Metamorphic
Rocks
Sediments
&
Sedimentary
Rocks
Mantle
Core
E.T.
Atmosphere
Biosphere
Hydrosphere
Lithosphere
Geosphere
CRUST
OCEANS
Loss to space and the mantle are very small.