glacial till
sedimentary rock
clay deposit
geological formation
1. The soil in this region is primarily composed of boulder clay.
该地区的土壤主要由冰碛粘土组成。
2. Engineers must account for the low permeability of the boulder clay.
工程师必须考虑到冰碛粘土的低渗透性。
3. The landscape was shaped by the deposition of boulder clay during the last ice age.
地貌是上一个冰河时代冰碛粘土沉积所塑造的。
A: Why is construction so difficult in this area?
A：为什么这个地区的施工如此困难？
B: The ground is heavy with boulder clay, which is hard to work with.
B：地表含有大量的冰碛粘土，很难进行作业。
1) 冰川沉积的粘土
2) 含有碎石的粘土层
3) 地质学中的沉积物
1. 冰碛粘土
e.g.
The foundation was laid on a thick layer of boulder clay.
地基建造在一层厚厚的冰碛粘土之上。
noun
1. A type of sediment consisting of clay with pebbles, gravel, and sand, often deposited by a glacier.