Archaeological Feature - point

Submerged archaeological sites subdivided as: 1. Cave site; 2. Open air site; 3. Settlement; 4. Other. Chronological information is presented as calendar age BP. Confidence is defined as follows: 1. High: Sampled feature with good age and palaeoenvironmental control. 2. Sampled feature with poor or none age and palaeoenvironmental control. 3. Constructed by remote sensing data only. 4. Low: Reasonable without any direct evidence.水下考古遗址划分为以下四类：1. 洞穴遗址；2. 露天遗址；3. 定居点遗址；4. 其他类型。 年代学信息采用日历纪年距今年代（calendar age BP）形式呈现。 置信度分级标准如下：1. 高置信度：采样特征具备良好的年代与古环境控制条件；2. 采样特征的年代及古环境控制条件较差或无相关控制；3. 仅基于遥感数据构建的遗址；4. 低置信度：仅具备合理性但无任何直接证据支撑。