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The shelly sand, clay and gravel deposits known locally as 'crag' cover the eastern part of the county. The western 'feather edge' of the crag is mapped south from the coast west of Sheringham through Cawston and Norwich to the Suffolk border east of Diss. The sequence is divided into the Red Crag, Norwich Crag and Wroxham Crag formations.
Research into the lithostratigraphy of the Norwich Crag was carried out by the British Geological Survey between 1975 and 2006 as part of work to remap the geology of Norfolk and Suffolk; new techniques allowed improved understanding of local detail, [11] and it became possible to distinguish the Norwich Crag from the succeeding Wroxham Crag ...
The Crag Group is a geological group outcropping in East Anglia, England and adjacent areas of the North Sea. Its age ranges from approximately 4.4 to 0.478 million years BP , spanning the late Pliocene and early to middle Pleistocene epochs.
The sequence above this (brown sands with yellow clay seams and ferruginous material) was considered to resemble the uppermost division of Norwich Crag as described by Woodward (1881), [8]: 31 attributed to the Bure Valley Beds (now referred to the Wroxham Crag Formation.
The youngest "solid" rocks of the area are those of the Crag Group which are of Neogene to early Quaternary age. They comprise marine and estuarine sands and other sediments. [6] These and more recent superficial deposits (described below) are all recognised formally as parts of the Great Britain Superficial Deposits Supergroup. [7]
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Wroxham is a village and civil parish in the English county of Norfolk. The civil parish of Wroxham has an area of 6.21 square kilometres, and in 2001, had a population of 1,532 in 666 households. A reduced population of 1,502 in 653 households was noted in the 2011 Census.
The maps below show the sizes and statuses of the fires. They will be updated frequently. The largest of the blazes, the Palisades Fire, is more than 33 square miles. That’s half the land size ...