IRD composition and accumulation rates of Heinrich Event layers (H1-H6) and interlayers (I1-I5) in sediment core GeoB18530-1

The cumulative classified count record (in percentages) over ~2 cm resolution of each petrologically identified IRD lithologies within the stratigraphic units of Heinrich Layers and Interlayers (about ~10 to 20 samples of 10 cm3) represent the >1 mm IRD particles in ~100 to 200 cm3 of sediments. The data are expressed in percentage to facilitate correlation and also avoiding exaggeration of less signification IRD particle abundances. IRD accumulation rate per area and time was derived from IRD counts and sedimentation rate of each stratigraphic unit.

在 Heinrich 层与层间（约 10 至 20 个 10 立方厘米的样品）的层序单元中，针对每一定义的岩相识别的 IRD 岩性，以约 2 厘米分辨率的累积分类计数记录（以百分比表示），代表了约 100 至 200 立方厘米沉积物中的大于 1 毫米的 IRD 粒子。数据以百分比形式表达，以促进相关性分析，并避免对重要性较低的 IRD 粒子丰度的过度夸大。每单位面积和时间的 IRD 积累速率是通过 IRD 计数和每个层序单元的沉积速率计算得出的。