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在浦东新区高层建筑主要桩基持力层之一的暗绿色和褐黄色硬土层系统勘察的基础上,运用沉积学的研究方法和地层对比研究,对硬土层的沉积特征作一剖析。认为该硬土层为末次冰期干冷气候条件下风成黄土沉积物经过次生变化作用演变而成。
Based on the investigation of dark green and brownish yellow hard soil system, one of the main pile holding layers of high-rise buildings in Pudong New Area, the sedimentary characteristics of the hard soil layer are analyzed by using sedimentology research method and stratum contrast study. It is considered that the hard layer evolved from the secondary change of aeolian loess sediments under the dry and cold conditions of the last ice age.