Question

what are the main theory regarding the process of fossilization

Answer 1

Fossilization is the process by which a plant or animal becomes a fossil. This process is extremely rare and only a small fraction of the plants and animals that have lived in the past 600 million years are preserved as fossils. This may be surprising, considering the millions of fossils that have been collected over the years, and the many billions still in the rocks. Those plants and animals that do become fossils generally undergo, with some exceptions, several key steps.
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First, the soft tissue that exists during life decays leaving behind only the "hard parts" (bone, shell, teeth). Second, hard parts may be transported and broken. This causes the fossilized remains to be incomplete representations of the living animal. It is much more common to find a fragment of shell or bone than it is to find a complete skeleton. Third and most important, hard tissues become buried and altered. In most cases this involves destroying the original material from which the hard parts were made as minerals are slowly dissolved and replaced by new ones. Often times a hard part is dissolved without being replaced by new material, leaving behind only an impression or mold of the original animal. If this mold is filled with sediment that is later cemented into rock it will make a castof the original animal.
These fossilization scenarios are a few of many possible processes that turn living organisms into rock-like material. Each process generally follows the three previously mentioned steps: decay, transport, and burial. Think of using the same procedure to bake two cakes and using a different set of ingredients for each cake. In our case, the cakes are fossils and fossilization is the procedure.

Answer 2

Answer:

The process through which an animal or plant becomes a fossil is called fossilisation.

Only a small portion of the plants and animals that have existed over the last 600 million years have been preserved as fossils due to the high rarity of this process.

Given the millions of fossils that have been gathered throughout the years and the many billions that are still in the rocks, this may come as a surprise.

With a few exceptions, most plants and animals that do become fossils go through a number of important stages.

First, the soft tissue that is present throughout life deteriorates, leaving just the "hard portions" behind (bone, shell, teeth).

Second, transporting and breaking hard pieces is possible.

The resulting imperfect portrayal of the living animal in the petrified remains.

It has a lot more It is more typical to find a piece of shell or bone than a whole skeleton.

Thirdly, and most significantly, hard tissues are transformed and buried.

The majority of the time, in order to replace old minerals with new ones, the original material from which the hard components were built must be destroyed.

An animal's original form is frequently only preserved as an impression or mould when a hard portion dissolves without being replaced by fresh material.

This mould will create a cast of the original animal if it is filled with sediment that is later solidified into rock.

These fossilisation scenarios are just a few of the numerous mechanisms that could convert living things into material that resembles rock.

The three steps previously described are normally followed by each process:

decay, burial, transportation, and.

Consider baking two cakes with the same recipe, but using two separate sets of ingredients for each cake.

In this instance, the cakes are fossils, and the process is called fossilisation.

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