A semi-precious gem formed out of the fossilized resin of ancient trees .
Age varies from 20 Million years up to 245 Million years
Dominican Amber ranges from 25-40 Millions years (Tertiary period) .
Tertiary period is from 1.6M to 66M .
Mesozoic period is from 66M to 245M.
Million years ago large stands of forests in some parts of the world began to seep globs of sticky resin.
The probable tree for Dominican amber is the Hymenaea protera (family Leguminoseae).
The tree is now extinct but “Algorrobo” is a probable descendant.
This aromatic resin went down the sides of trees, as well as filling internal fissures, trapping debris, such as seeds, leaves, feathers and insects.
As geologic time progressed the forests were buried and the resin hardened into a soft, warm, golden gem,
known as amber.
The formation of amber
The starting resin must be resisant to decay (both physical = sun ligth, or biological = bacteria & fungi).
Any type of protection would favor preservation of resin and therefore amber formation (resin rapidily covered by vegetation and soil) .
The first step of fossilization is polymerization (small molecules = monomers will form large network of molecules = polymers), at this stage the resin is called COPAL. (less than 1M year) .
After a few millions years copal under the rigth condition of temperature and pressure then becomes AMBER.
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