Fourth period sialk last part
began about 5000 years ago and continued about 4The period 500
Years ago. The most important cultural phenomenon . in this period is using primary writing . increasing population caused to replace painted pottery wares to plain and coarse wares. One of the important characters of this period is cylindrical seal and making of coarse bowls that known as beveled rim bowl among archaeologists . dr. s. m. shahmirzadi. Director of sialk reconsideration believed that mud brick structure in the surface of southern tepee is the oldest known ziggurate in the iran . he remarked it during his first investigation season . the mud brick structure was built beside of the main sialk temple . he wrote in the fourth season report excavation as follows. Today the height of sialk ziggurat reaches to 15/94 meters. It has third fioor platform. One landing at the south of first platform and one ascendant way, this way was shown to steps in ziggurat new reconstruction.
Professor girishman during the excavation in the southern tepee believed that building on tepee and cemetery B are in oan period and introduced it Acropolis of the city that destroyed nowadays. It is necessary to undertake controlled excavation in future to determine the age. Quality and application of this precious mud brick structure .
This period began about 3200 years ago . and belongs to new immigrants in sialk . they remained architecture monuments in the surface of tepee . on the architectural remains of last period . their "cemetery A" was located about 220 meters at south of the southern tepee. The different of this period and last period is the burial pattern that they practiced in which their dead were buried out of houses, the French expedition excavated fifteen graves in the cemetery A. thy found ceramic abjects. Bronze and iron tools, beads and pendants beside the dead . using grey wares is one their cultural characteristic….
The period lasted during 2800-2900 years ago in southem tepee. If refers to peoples that buried their dead in cemetery B about 250 meters far from west of the southern tepee. Professor girishman believes that new peoples arrived at this region in this period . they occupied it and the result of occupthing the tepee. It caused to destroy completely the houses of fifth period . new building replaced on the houses . it is said that the founded objects look like cemetery B.
The owner of the cemetery buried the dead with ceramic wares . bronze tools ; etc. then they filled the grave and formed it like ahill . some of the graves on the top of the tepee covered with stone slabs and big bricks that possible ; indicated a high social rank of dead. About 200 graves were excavated by French expedition.
The pottery wares in the cemetery are one of the most importand characteristic in sixth period. It seems that . they used in burial. Some of the wares are similar to animals and birds or have spout that decorated their surface completely with human . animal and geometric motive .