在地質研究中,新生代地質,向來是最易被人忽略的一部分,早年的地质報告中,提到第三纪第四纪地層,每以数十字成十餘字了之,最普遍的無非是紅色岩系或第三紀初期砂岩,三趾馬紅土或黄土等而已。一般的地质调查,多注意新生代以前地層,故此等现象,本無足怪。 In geological research, the Cenozoic geology, has always been the most easily overlooked part of the early geological report, referred to the Tertiary Quaternary strata, every word into a dozen words, the most common nothing more Is the red rock or early Tertiary sandstone, Marigold or loess and other only. Geological survey in general, pay more attention to the previous Cenozoic strata, so these phenomena, this is no strange enough.