crop was wheat. The Steppe “Sheep and goats were domesticated in South West Asia, probably in the region of eastern Anatolia and northern Syria between 8000 and 7500 BC, and were part of the agricultural package that was transmitted to Greece and the Balkans during the pioneering movements in the seventh millennium. From there the herding of domesticated sheep and goats was gradually taken up by foraging communities in the Pontic-Caspian steppe during the sixth and fifth millennia and became an essential part of the herder economy.” Geologic and climatic change The Northgrippian In the geologic time scale, the "Northgrippian" succeeded the "Greenlandian" c. 6236 BC (to c. 2250 BC). The starting point for the Northgrippian is the so-called 8.2 kiloyear event, which was an abrupt climate change lasting some four centuries in which there was a marked decrease in global temperatures, possibly caused by an influx of glacial meltwater into the North Atlantic Ocean. Creation of Great Britain and Ireland The influx is believed to be one factor in the creation of Great Britain and Ireland as islands separate from the European continent. After the Last Ice Age ended c. 9700 BC, increasing sea levels gradually inundated Doggerland, a land bridge which linked Great Britain to Denmark and the Netherlands. This process began the formation of the North Sea and the English Channel. Further west, another low-lying land area was being flooded to form the Irish Sea and create Ireland. Sometime in the second half of the 7th millennium, the Storegga Slides occurred off Norway to generate a huge tsunami which completely overwhelmed Doggerland and its Mesolithic community of an estimated 5,000 hunter-gatherers. By about 6100 BC, Great Britain had become an island. Astronomy Jupiter occulted Saturn in 6857 B.C.E. This is one of the rarest events known, with the next occurrence on February 10, 7541. References Bibliography -93