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Dysgonia algira
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Essex Field Club
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EFC Centre at Wat Tyler Country ParkWe are closed due to the Covid-19 situation, but we are otherwise normally open to the public at our centre at Wat Tyler Country Park every Saturday, Sunday and bank holiday 11am-4pm, check. We are also normally open on Wednesdays 10am-4pm.

Geology Site Account

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Osea Island foreshore, OSEA ISLAND , Maldon District, TL917058, General geological site

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Site category: London Clay, Claygate or Bagshot Beds

Site name: Osea Island foreshore

Grid reference: TL 917 058 (approx)

Brief description of site:

London Clay fossils can be found on the foreshore at low tide. Stems of the fossil crinoid (sea lily) Isselicrinus subbasaltiformis occur in great abundance (George & Vincent 1976).

The island can only be reached at low tide by a causeway from the mainland. The island is private property but fossils can be collected from the foreshore at low tide.

A late Neolithic – early Bronze Age assemblage of flints has been found on the foreshore here at TL 904 066 (Vincent & George 1984).



Low cliff of London Clay and terrace gravel at Osea Island (Photo WH George)

 

Osea Island and Northey Island from the air
Osea Island and Northey Island from the air

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Reference: George & Vincent 1976 (p. 27), Vincent & George 1984, Saward 2015.

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