Terrace - lines

Terraces are defined as a step-like landform and can be sub-divided thus: 1. Marine (1a: erosional / 1b: depositional); 2. Fluvial (2a: erosional / 2b: depositional); 3. Lacustrine (3a: erosional / 3b: depositional); 4. Other. Further information on genesis of the terrace e.g. Erosional (e.g. wave-cut platform), Depositional (e.g. fluvial margins) is presented if known. 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.阶地（Terraces）被定义为阶梯状地貌，可按如下类型细分：1. 海成阶地（1a：侵蚀型 / 1b：沉积型）；2. 河流阶地（2a：侵蚀型 / 2b：沉积型）；3. 湖成阶地（3a：侵蚀型 / 3b：沉积型）；4. 其他类型。若已知相关资料，将进一步阐述阶地的成因，例如侵蚀型阶地（如浪蚀平台）、沉积型阶地（如河流边缘沉积体）。年代学信息以日历年龄距今（calendar age BP）的形式呈现。置信度分级如下：1. 高置信度：采样获取的地貌特征具备良好的年代与古环境约束；2. 采样获取的地貌特征仅具备较差或完全缺失的年代与古环境约束；3. 仅通过遥感数据构建所得；4. 低置信度：推论合理但无任何直接证据支撑。