Amratian culture 阿姆拉特时期
The Amratian Culture was a cultural period in the history of predynastic Upper Egypt, which lasted approximately from 4000 to 3500 BC. It is named after the site of El-Amra, about 120 km (75 mi) south of Badari, Upper Egypt. El-Amra was the first site where this culture group was found without being mingled with the later Gerzean culture group. However, this period is better attested at the Naqada site, thus it also is referred to as the Naqada I culture. Black-topped ware continued to be produced, but white cross-line ware, a type of pottery which has been decorated with close parallel white lines being crossed by another set of close parallel white lines, begins to be produced during this time. The Amratian period falls between S.D. 30 and 39 in Petrie's Sequence Dating system.