
1) Fossilisation 2) Fossilization 3) Petrification 4) Sedimentary rock
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https://www.crosswordclues.com/clue/petrifaction

1) Petrification
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https://www.crosswordclues.com/clue/petrifaction

In geology, petrifaction or petrification is the process by which organic material is converted into stone through the replacement of the original material and the filling of the original pore spaces with minerals. Petrified wood is a common result of this process, but all organisms, from bacteria to vertebrates, can be petrified. Petrification ta...
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http://en.wikipedia.org/wiki/Petrifaction

• (n.) Fig.: Hardness; callousness; obduracy. • (n.) The process of petrifying, or changing into stone; conversion of any organic matter (animal or vegetable) into stone, or a substance of stony hardness. • (n.) The state or condition of being petrified. • (n.) That which is petrified; popularly, a body incrusted with stony matt...
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http://thinkexist.com/dictionary/meaning/petrifaction/

Fossilization, as in conversion into stone. ... Origin: L. Petra, rock + facio, to make ... (05 Mar 2000) ...
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http://www.encyclo.co.uk/local/20973
Pet`ri·fac'tion noun [ See
Petrify .]
1. The process of petrifying, or changing into stone; conversion of any organic matter (animal or vegetable) into stone, or a substance of stony hardness.
2. The state or condition of being petrified.
3. That which is petrified; pop...
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http://www.encyclo.co.uk/webster/P/66

Type: Term Pronunciation: pet′ri-fak′shŭn Definitions: 1. Fossilization, as in conversion into stone.
Found on
http://www.medilexicon.com/medicaldictionary.php?t=67544

[
n] - the process of turning some plant material into stone by infiltration with water carrying mineral particles without changing the original shape 2. [n] - a rock created by petrifaction
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http://www.webdictionary.co.uk/definition.php?query=petrifaction
petrification noun the process of turning some plant material into stone by infiltration with water carrying mineral particles without changing the original shape
Found on
https://www.encyclo.co.uk/local/20974
No exact match found.