我国北方除中奥陶—中石炭世古风化壳常见外,其他风化壳的发现和研究较少。1967年,笔者根据沈北煤田岩心的室内测试资料和其他资料,确认了下辽河盆地早第三纪玄武岩的古风化壳。前几年,吉林省水曲柳粘土矿张程在坑道中发现花岗岩(γ_4~(3—2))的古风化壳。各风化壳都有再沉积的粘土和煤层。现分述如下。 In addition to the middle Ordovician-Middle Carboniferous weathering crust in northern China, there are few other weathering crust discoveries and researches. In 1967, based on the laboratory test data and other data of cores in the Shenbei Coalfield, the authors confirmed the paleo-weathering crust of the Early Tertiary basalts in the Lower Liaohe Basin. A few years ago, Zhang Cheng, the ash-clay clayey mine in Jilin Province, discovered an ancient weathering crust of granite (γ_4 ~ (3-2)) in the tunnel. Each weathered crust has redeposited clay and coal seam. Now is as follows.