GeoJuice
180323KimmeridgeBay9702w
The geology of Kimmeridge civil parish comprises bedrock formed in the Late Jurassic epoch, overlain in many places by superficial Quaternary head deposits. The bedrock is mostly Kimmeridge clay, except for the top of Smedmore Hill and along to Swyre Head, which is formed from Portland stone. Between this and the Kimmeridge clay, and outcropping just beneath the top of the hill, is a thin band of Portland sand. Landslip deposits from the Portland stone cover most of the steep southwest-facing slopes of the hills. Within the Kimmeridge clay are bands of bituminous shale and dolostone, which form flat ledges within Kimmeridge Bay that are exposed at low tide.
Kimmeridge gives its name to the Kimmeridgian, the division of the Jurassic period in which the beds were laid down, because of the quality of the cliffs and the fossils they yield. Kimmeridge is also the type locality for the Jurassic age Kimmeridge Clay formation, which is well represented in southern England, and provides one of the source rocks for hydrocarbons found in the Wessex and North Sea Basins.
Wikipedia
180323KimmeridgeBay9702w
The geology of Kimmeridge civil parish comprises bedrock formed in the Late Jurassic epoch, overlain in many places by superficial Quaternary head deposits. The bedrock is mostly Kimmeridge clay, except for the top of Smedmore Hill and along to Swyre Head, which is formed from Portland stone. Between this and the Kimmeridge clay, and outcropping just beneath the top of the hill, is a thin band of Portland sand. Landslip deposits from the Portland stone cover most of the steep southwest-facing slopes of the hills. Within the Kimmeridge clay are bands of bituminous shale and dolostone, which form flat ledges within Kimmeridge Bay that are exposed at low tide.
Kimmeridge gives its name to the Kimmeridgian, the division of the Jurassic period in which the beds were laid down, because of the quality of the cliffs and the fossils they yield. Kimmeridge is also the type locality for the Jurassic age Kimmeridge Clay formation, which is well represented in southern England, and provides one of the source rocks for hydrocarbons found in the Wessex and North Sea Basins.
Wikipedia