GEOMORPHOLOGICAL RESEARCHES ON THE NORTH TANGENT ARCHAEOLOGICAL SITE IN SOFIA, BULGARIA

The archaeological site is located in the northeastern part of the Sofia kettle, Southwestern Bulgaria. There were found two archaeological structures during the construction of site № 3 along the North Tangent in Sofia. The conducted studies showed that the cultural layers are in the alluvial deposits of Perlovska river (a left tributary of Iskar river). This gave a reason for performing complex descriptions, sampling and analysis on field. There were made archaeological excavations in an area of 160 m length and a width of 22 m. Geomorphological observations are marked in five key points. The samples were processed in a sedimentological laboratory and put through morphoscopic and grain-size analysis. Keywords: archaeological structures, Sofia kettle, geomorphological researches, sedimentological analysis, facial environments. INTRUDUCTION The study area is located in 120-150 cm depth of present topographic surface near the Perlovska river bed. Archaeological data The archaeological site 3A is part of larger site № 3 in the route between 8+ 400 km to 9+ 030 km