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Functions of fossilization

function of fossilization

When forms of life die and get buried in the earth through various mineralogical and chemical effects they become fossils. The formation of fossils including the various effects is called fossilization.

Many conditions are required for fossils to be formed. The most basic condition is the necessity to contain firm parts such as skeleton or shell. This is because the film parts of forms of life do not get damaged easily due to external factors and are preserved for long periods. Also, other forms of life need to be buried quickly after death and this is to protect it from decay or weathering. If forms of life are not buried quickly then aerobic bacteria may cause decay. Also, due to effects of underground water or surface water ashes dissolution may occur. Apart from these factors forms of life which are highly populated and live a group existence have isolated effects.

Due to these numerous conditions having to be satisfied before fossils can be formed, fossils of some forms of life appear less than others. In the case of skeletons containing many minerals then such skeletons are easily preserved as fossils. However, for forms of life which do not contain a skeleton or do not have their skeleton firmly attached to their body, such soft compositions do not form into fossils. In such cases only if specific conditions are fulfilled then fossils may be formed.