Ice rafted debris from sediment core Co1305

The number of particles >1 mm in diameter was quantified by wet sieving on a 1 mm steel mesh sieve. The number of mineral grains retained on the sieve were counted and normalized to the dry sediment weight.

直径大于1毫米的颗粒数量通过1毫米钢网筛（steel mesh sieve）的湿筛法（wet sieving）进行量化。筛上留存的矿物颗粒数量被计数，并归一化至干沉积物重量。