The Geology of Kimmeridge Bay:From Iron Age to Present Day
Kimmeridge Bay really does have something for everyone; from marine life enthusiasts, hikers and walkers to geographers and geologists. At Clavells we love to hear your stories about what you’ll be doing with your day at Kimmeridge.
Although Kimmeridge Bay is famous for the fossils to be found both on the bay itself and at the Etches Collection, there’s also so much to discover when it comes to the geography and geology of the land itself.
Exploring Kimmeridge’s Geology
Did you know that over 155 million years ago, the rocks at Kimmeridge Bay formed the floor of a tropical sea which was home to a vast variety of prehistoric life? It’s no wonder that they have now been designated a geological World Heritage Site.
It was around 20 million years ago that Purbeck’s Jurassic and Cretaceous rocks were pushed upwards in dramatic movements deep in the earth. These rocks formed a vast fold and the sheer force of the movement meant that the chalk ridge of the Purbeck Hills ended up in a close to vertical position. It’s incredible to learn how the landscape around us here at Clavells came to be.
Bronze Age, Iron Age and Romans
Even today you only need to look at the land and the rocks of Kimmeridge Bay to get a sense of the deep history here. There are stories to be found everywhere and adults and children will enjoy learning about this magical area.
Head up to Smedmore Hill to see the mound, now known to be a Bronze Age tumulus or burial mound. The views from here are stunning and it’s the perfect spot to rest a moment and take in the surroundings.
There’s historical evidence of the Iron Age people using the dark shales of Kimmeridge Clay (which can be seen today looking to your right as you stand on Kimmeridge Bay). This shale was used for everything from plant fertiliser to grease and varnish.
The Romans also used the shale from Kimmeridge and there is evidence of an Oil Shale Workshop being present as early as the Roman times. The extraction of oil was developed during this time and was used in the local town of Wareham as well as to power a nearby glassworks.
Kimmeridge Bay Today
The best time to see the full geography and geology of Kimmeridge Bay is at low tide. Both the cliffs and the foreshore are exposed and you can easily spot the Kimmeridge Clay. Take the time to stand for a moment and look out at the ‘stone bands’ of mudstones, thin shales and yellow brown dolomites.
Those interested may also want to take a look at the UK’s oldest, continuously producing wellsite which is located on the northern shore of the bay. The “Nodding Donkey” can be seen for miles around and currently produces around 80 barrels of oil per day.
At Clavells we can’t wait to welcome you before or after you head to the bay to explore the geography and geology that awaits.
Whether you stop by for a coffee and pastry before a day at the beach, or need to refuel yourself with lunch or dinner after a long walk or swim, come by and tell us what you’ve discovered whilst enjoying our fantastic food and drink offering.