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JURASSIC FOSSILISED WOOD - 150 million years old - Isle of Portland, Dorset

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FOSSILISED WOOD (JURASSIC)

150 million years old
(Jurassic period)


Isle of Portland, Dorset

At the base of the Purbeck Formation in Dorset is a layer of rock containing fossil trees that have now been silicified - in other words completely replaced by quartz.  The trees grew around a saline lagoon that occupied this area towards the end of the Jurassic period.

The dominant tree was a large conifer that was adapted to living in what was then a climate of hot, arid summers and warm, wet winters. The growth rings in the wood indicate that a highly seasonal environment prevailed in Southern England during the late Jurassic period.
 
The trees were drowned by the rising waters of the lagoon and many have been preserved in their original positions of growth. At this time Dorset was situated at the same latitude as present-day Malta.
  
The base has been cut flat so that it stands upright for display.
  
Click on a picture for a larger image

Size: 17 x 11 x 11 centimetres
Weight: 2.5 kilograms

PRICE: £35.00