Which geological period was named after the word for chalk?
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
Geological period though the ICS now recognises them both as 'subperiods' of the Carboniferous Period recognised by European geologists. Cases like this in China, Russia and even New Zealand with other geological eras has slowed down the uniform organization of the stratigraphic record. Notable changes Geological period A geological period is one of several subdivisions of geologic time enabling cross-referencing of rocks and geologic events from place to place. These periods form elements of a hierarchy of divisions into which geologists have split the Earth's history. Eons and eras are larger subdivisions than periods while periods themselves may be divided into epochs