preservation of fossils 4.0 / 5 based on 2 ratings ? Geologymethods of preservation A2/A-levelOCR Created by: ellenioannouCreated on: 13-03-15 12:29 What are exceptional methods of preservation? Amber and Tar 1 of 8 What replaces the fossil material in silicification? Silica Dioxide 2 of 8 What causes carbonisation? compaction 3 of 8 in replacement what does unstable aragonite change to? Calcite 4 of 8 what conditions are need for pyritisation? Anaerobic and sulfur bacteria 5 of 8 where is pyritisation common? deep sea or shallow swamp 6 of 8 what is a common example of pyritisation? Petrified wood 7 of 8 an external mould has what features of the shell? External features 8 of 8
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