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70年代末,水文地质部门在华北平原上打了大量第四系钻孔,1993年对其中近百个钻孔的沉积相和测年资料重新进行分析,发现在该区全新统之下、上更新统上部普遍发育了一层细砂层,埋深一般为对20-40m。厚度约为5-20m,平面分布连续而稳定。90年代在黄渤海进行过数千公里的浅地层剖面测量,在海底以下十几米至40m左右的深度也发现该细砂层,厚约为15-30m。剖面仪记录下该砂层发育有大倾角斜层理,其倾角达10-20°,将其定为风成沉积。本次冰期盛时,无论是华北平原还是黄渤海陆架,均未发育以粉砂为主的黄河沉积。因此,笔者认为本次冰期盛时的21-13kaB.P,黄河解体消亡,因而未能东流入海。这一结论,恰与当时黄河流域气候干旱、降水量小的古地理环境特点相吻合。
In the late 1970s, a large number of Quaternary drilling holes were drilled in the North China Plain by the hydrogeology department. In 1993, sedimentary facies and dating data of nearly 100 boreholes were re-analyzed. It was found that in the area under the Holocene, Upper Pleistocene generally developed a layer of fine sand layer, the depth is generally 20-40m. Thickness of about 5-20m, the plane is continuous and stable. In the 1990s, the shallow stratigraphic surveys of thousands of kilometers were carried out in the Yellow Sea and the Bohai Sea. The fine sand layer was also found at a depth of about 10 to 40 meters below the seafloor with a thickness of about 15-30 m. Profiled instrument records the development of the sand layer with a large dip angle bedding, its dip angle of 10-20 °, set it as the wind deposition. The glacial period Sheng, whether it is the North China Plain or the Yellow Sea and the Bohai Sea shelf, are not developed to the silt-based Yellow River sediments. Therefore, I believe that the time of this glacial 21-13kaB. P, the Yellow River disintegrated and died, which failed to east into the sea. This conclusion coincides with the characteristics of the paleogeographic environment in the Yellow River Basin that was characterized by arid climate and small amount of precipitation at that time.