Fognam Chalk Quarry facts for kids
| Site of Special Scientific Interest | |
View towards Fognam Chalk Quarry
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| Area of Search | Berkshire |
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| Interest | Geological |
| Area | 3.0 hectares (7.4 acres) |
| Notification | 1985 |
| Location map | Magic Map |
Fognam Chalk Quarry is a special natural area located west of Upper Lambourn in Berkshire. It covers about 3-hectare (7.4-acre), which is roughly the size of three rugby fields. This site is very important for its geology, meaning its rocks and how they were formed.
It's a Site of Special Scientific Interest, often called an SSSI. This means the area is protected by law because of its unique natural features. Fognam Chalk Quarry is also a Geological Conservation Review site, highlighting its importance for studying Earth's history.
Please note that this site is on private land, and there is no public access.
Contents
What is Fognam Chalk Quarry?
Fognam Chalk Quarry is a place where chalk was once dug out of the ground. It's now protected because it helps scientists understand the Earth's past. The rocks here tell a story about what the world was like millions of years ago.
A Look at the Rocks: Geology
The main rock you find here is called Chalk Rock. This rock was formed a very long time ago, about 80 to 90 million years ago! Back then, this area was covered by a shallow sea. The chalk formed from the tiny shells and skeletons of sea creatures that settled on the seabed.
Fognam Chalk Quarry is special because it shows where two different layers of chalk meet: the Middle Chalk and the Upper Chalk. Scientists can study this meeting point to learn about changes in the ancient sea.
The chalk in Berkshire is thinner than in other places like Hertfordshire or Dorset. This is because it was deposited over a slightly higher area, like a gentle underwater hill, which meant the sea was shallower here.
Scientists also find fossils in the quarry, especially ancient sea creatures called ammonites and bivalves. These fossils help them figure out the exact age of the chalk layers.
A Bit of History
For many years, the chalk dug from this quarry was used by local people. It was an important material for building houses and other structures in the nearby area.
Who Lives Here? Animals
Even though it's a rocky area, Fognam Chalk Quarry is home to some interesting animals.
Mammals
Invertebrates
- Small blue (a type of butterfly)
What Grows Here? Plants
Many different types of plants thrive in the chalky soil of the quarry.
- 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
