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After approx. 1.5 miles the cycle path takes you alongside
Bradley Fen Quarry where you will be able to see the drag line excavators
digging clay for brick making. You arrive at a staggered crossroads, turn
left down the short slope to a small bridge over Morton's Leam. Follow
the path to the award winning Shanks Millennium Bridge over the River
Nene.
This beautiful bridge commissioned by Peterborough Environment
City Trust as part of the Green Wheel cycle route is constructed of Corton
Steel. A special material made from a high percentage of recycled steel
that is designed to rust on the very surface but then no more, therefore
it does not require painting.
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Bradley Fen Quarry
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The view across the Bradley Fen quarry shows two quite
distinct episodes in the geological history of the area - the darker clay
capped by the lighter gravels and sands.
The Oxford Clays that underlay this area contain the
remains of sea creatures that swam in a warm sub tropical ocean 150 million
years ago. Movement of the earth's crust has slowly transported the floor
of this ocean from its original position much nearer the equator to its
current day latitude and elevation.
Some amazing sea creatures have been found here, including
huge crocodiles (steneosaurus) and monstrous reptiles (such as pachycostasaurus),
gigantic fish (Leedsicthyus), and strange shellfish (ammonites and belemnites).
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Horseriders on the Millennium Bridge
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More recently, towards the end of the last glaciation
huge quantities of gravel and sand were deposited on top of the Jurassic
clays by the enormous flood of water from the melting ice caps. Between
15 to 10 thousand years ago animals roamed the land near to the receding
ice-sheets. Woolly Mammoth, Woolly Rhino, Hippopotamus, Horse, Reindeer,
Bison, Wild Oxen and Bear have all left their bones to be found in the
gravel beds.
Quarrying of Oxford Clay for brick making on an industrial
scale began at the end of the 19th century. Once many dozens of brick
kiln chimneys could be seen around Peterborough, now only the Whittlesey
works remain. A huge amount of sand and gravel is now quarried here for
the construction industry.
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