Silica based life

[danie]

How did all the fossils we find on earth formed.

Is it not possible to be the remains of a silica based lifeform that exist in the past.

How is it possible for a tree trunk or dead animal to lie for hundreds of years in the water in such a way that it dont get destroyed. How can silica that are so insolloble get inside a tree trunk with a diamitar of owerone metre and replace the wood(carbon) layer by layer

[pwagen]

This site might answer at least some of your questions.

 

http://www.discoveringfossils.co.uk/whatisafossil.htm