Fognam Chalk Quarry
# Fognam Chalk Quarry

Fognam Chalk Quarry is a 3-hectare (7.4-acre) geological Site of Special Scientific Interest west of Upper Lambourn in Berkshire. It is a Geological Conservation Review site. It is in the North Wessex Downs.

The site is private land with no public access.

## Geology

The Chalk Rock was deposited about 80-90 Million years ago, the quarry marks the junction between the Middle and Upper Chalk. The formation can be traced from Hertfordshire to Dorset, but the chalk of Berkshire is only about half the thickness seen in other locations as it is thought that it was deposited over an area of relatively higher ground (the Berkshire-Chiltern Shelf, part of the London Platform) and therefore in shallower seas. This makes correlation with other formations difficult, due to the absence of certain marker beds, although dating from fossils in the quarry, particularly Middle and Upper Turonian ammonites associated with inoceramid bivalve assemblages has been attempted.

## History

The chalk from this quarry was used locally to build houses.

## Fauna

The site has the following Fauna:

### Mammals

* Highland cattle

### Invertebrates

* Small blue

## Flora

The site has the following Flora:

* kidney vetch
* birdsfoot trefoil
* Lady's bedstraw
* cowslip
* mignonette
* rough hawkbit
* glaucous sedge
* common spotted orchid
* salad burnet
* greater knapweed
* yellow rattle
* fairy flax
* hoary plantain
* field scabious
