IDENTIFICATION OF CHARCOAL FROM SITE LA 4921, NEW MEXICO

Pieces of charcoal recovered from two pithouse features at site LA 4921, Three Rivers, New Mexico, were submitted for identification. These charcoal samples are believed to represent horizontal timbers used in construction of the pithouse roofs. Radiocarbon dates range from 1330 to 1140 years BP, with two sigma calibrated ages ranging from AD 640-1020. These dates suggest occupation by the Jornada Mogollon.

从新墨西哥州三河地区LA 4921遗址的两处半地穴式房屋遗迹中提取的炭块样本已送交鉴定。据推测，这批炭块样本对应该半地穴式房屋屋顶搭建所用的横向木构件。其放射性碳定年结果介于距今1330至1140年之间，其二西格玛校准年代区间为公元640年至1020年。上述定年结果表明该遗址曾为霍兰纳莫戈隆（Jornada Mogollon）先民所占据。