Which geological period is named after the chalk laid down?
Winterbourne Chalk Pit used as a source of evidence in an important geological paper by Jarvis and Woodroof. Winterbourne Chalk Pit Winterbourne Chalk Pit is a designated Site of Special Scientific Interest (SSSI) based in Winterbourne, Berkshire. It is located within the North Wessex Downs. The site is 0.1 acres in size. The chalk pit is rich in Macrofossils, particularly belemnites. The chalk sediments date back to the late Cretaceous period of geological time, about 80 million years ago. The Chalk pit is the only known area containing rocks of this age in the western part of the London Basin. In 1970 the
Purfleet Chalk Pits Purfleet Chalk Pits Purfleet Chalk Pits is a 10.7 hectare geological Site of Special Scientific Interest in Purfleet in Essex. It is a Geological Conservation Review site. The chalk pits expose sands and gravels which are associated with the ancient course of the River Thames. They have yielded varied animal, mollusc and plants remains which throw light on the environmental and fluvial conditions at the time when they were deposited. The site is over 280,000 years old, and laid down when this section of the Thames was flowing westwards. There also broken flints in several layers, showing occupation by early