作者经近几年野外调查和实验室研究,发现广东沿海地区第三、第四系地层中的砂质粘土层或粘土质砂层是一种优质的造纸涂布原料,经济价值很大。这套地层在南方分布广、厚度大、矿层储量可观、潜在经济价值巨大,是今后找矿工作中值得重视的层位。 After field investigation and laboratory research in recent years, the authors found that the sandy clay layer or clayey sand layer in the third and quaternary strata of Guangdong coastal area is a good raw material for papermaking coating and has great economic value. This set of strata in the south is widely distributed, thick, large reserves of considerable potential economic value, is the prospect of work in the future should pay attention to the horizon.