Essex Field Club on Facebook

Video about the Club

Agrochola macilenta
find out more... Yellow-line Quaker    Agrochola macilenta Copyright: Graham Ekins

Essex Field Club
Essex Field Club
registered charity
no 1113963
HLF Logo A-Z Page Index

Visit Our Centre

EFC Centre at Wat Tyler Country ParkWe are open today

We are normally open to the public on Saturdays, Sundays and bank holidays 11am-4pm. We are also open on Wednesdays 10am-4pm.
Spring recording Record your Robin Record Common Frog Rana temporaria
Record Alexanders Smyrnium olusatrum Record Tawny Mining Bee Andrena fulva
Record Dark-edged Bee Fly Bombylius major
Record Spring Flower Bee Anthophora plumipes
Record cuckoo bee Melecta albifrons

Geology Site Account

Debden Puddingstone , DEBDEN, Uttlesford District, TL550332, Potential Local Geological Site

hide/show OS map  

Site name: Debden Puddingstone

Grid reference: TL 550 332

Brief description of site:

Next to a public footpath west of Debden parish church is a round boulder of Hertfordshire puddingstone about a metre in diameter.



At the side of the public footpath behind Debden Parish Church is a round boulder of Hertfordshire puddingstone about 1.05 x 0.9 x 0.65 metres in size. The boulder is quite a bright orangey-red colour and stands out next to the path, despite being masked by stinging nettles in the summer.

Hertfordshire Puddingstone was formed around 55 million years ago when the climate of Britain was hot and a layer of pebbles beneath the surface of the ground became cemented with quartz. They are thus very resistant to erosion and have survived the rigours of the Ice Age. They originated in Hertfordshire, hence the name, and were probably carried to Essex by the River Thames when it flowed north of its present course. However, the distribution and abundance of Hertfordshire puddingstone in parts of Essex suggests that some occurrences may have a local Essex source.

The formation of silcretes (which includes sarsens and puddingstones) has been the subject of recent scientific debate. Research has compared the conditions under which sarsens and puddingstones may have been formed with the present day climate in the Kalahari Desert and parts of Australia.

Debden Puddingstone. Photo: M. Ralph


if you have an image please upload it

Reference: Lucy 2003a

Geology Site Map
A-Z Geological Site Index