RADIOCARBON AGE DETERMINATION OF A BONE SAMPLE FROM THE SWALLOW SHELTER, 5JF321, JEFFERSON COUNTY, COLORADO

Swallow Shelter (5JF331) is located in the foothills of the Colorado Front Range. Nestled in the hogback area, the surrounding vegetation includes Gambel's oak (Quercus gambelii), grasses, and forbs. Excavation over the period of years has yielded numerous artifacts, including a collection of decorated burned and calcined bone. A portion of one of the decorated, calcined bone fragments was selected for AMS radiocarbon dating.

燕子庇护所遗址（Swallow Shelter，编号5JF331）坐落于科罗拉多前岭（Colorado Front Range）山麓地带，地处单斜脊（hogback）区域。周边植被涵盖甘伯尔栎（Quercus gambelii）、草本植物与杂类草。经多年考古发掘，该遗址出土了大量遗物，其中包含一批带有纹饰的烧灼骨与煅烧骨遗存。研究人员选取了其中一块带纹饰的煅烧骨碎片的部分试样，用于加速器质谱（AMS, Accelerator Mass Spectrometry）放射性碳定年分析。