Amber and Copal can also be found in secondary
deposits, in other words, deposits that were not the original
depositional areas of the Amber or Copal.
Many times when the resin has already been
fossilized, it can be taken out of its original depositional environment
and be redeposited in sediments and survive the lithofication
and diagenesis of the sediments, and therefore be found in sedimentary
strata that can sometimes be far away from were the resin was
For example, Baltic Amber was largely produced
by the now extinct conifer Pinites succinifera which
lived 40-50 million years ago. During the late Eocene or early
Oligocene, the forests containing this species of conifer were
flooded (by the sea), and the resin was taken out to sea, only
to be returned by the sea and deposited with sediments in ancient
rivers, or near the coast. This Baltic Amber is now found within
a layer of "blue clay" which the sea is continually
washing it out and redepositing the Amber on the shore.
The average density of amber is only slightly
greater then that of sea water, therefore the Amber can sink to
the bottom of body of sea water, but can also easily move around
with currents, since its average density is so close to that of
Sea water also provides an good haven for
the Amber, because Amber oxidizes quite readily in anoxic environment,
like the terrestrial surface. The amount of oxidation that Amber
undergoes in seawater is much less then on the terrestrial surface.
This is one of the reasons why Amber is able to survive for millions
of years on the earth's surface in that Amber found in coal deposits
or in sedimentary strata are anoxic environments that do not attack,
(oxidize) the Amber.