The Bicun site is located at the intersection of the Weifen River and the Yellow River,and is a stone city settlement with dual inner and outer walls.This article conducted tree species identification,dendrochronology,and carbon dating of six charcoals unearthed from F5 ① at Xiaoyuliang terrace in Bicun site.The identification of tree species indicated that the construction wood of F5 belonged to the Subgen.Diploxylon of the Pinus genus;Using the curvature of the annual rings on the transverse section of charcoal and Photoshop software the age of building wood was not less than 119 years and the diameter was not less than 27.06 centimeters;A floating tree ring chronology of Subgen.Diploxylon with a span of 68 years was established by accelerator mass spectrometry(AMS);The radiocarbon dating of the charcoal series samples was determined by mass spectrometry,and the age of the last annual ring was approximately 2027 BC(95.4％),The building or renovation period of F5 was about 2027 BC.This study provides fundamental data for the construction or renovation of F5 buildings in Xiaoyuliang Terrace.
Bicun siteLongshan PeriodCharcoal analysisDendrochronology14C dating
NETL
NSTL
万方数据
