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分析滴哨沟湾剖面全新统DGS1段的粒度数据,认为流动沙丘砂、泥炭、砂质古土壤、古固定-半固定沙丘砂到湖沼相和次生黄土的颗粒总体上变细,分选变差。结合腹足类动物化石和湖沼相地层中石英砂粒表面电镜扫描,认为DGS1粒度结果实际上是全新世以来多次冬夏季风的交互演替过程的气候-地质记录。据此,将DGS1粒度信号记录的全新世气候分为4个阶段——全新世早期好转期、全新世鼎盛期、大暖期向寒冷期转变波动期和降温不稳定的沙漠化频繁变化时期。
Analyzing the grain size data of the DGS1 segment of the Eocene Danshan section, it is considered that the particles of mobile dune sand, peat, sandy paleosol, paleostatically fixed - semi-fixed sand dunes to lacustrine facies and secondary loess are generally thinner, difference. According to the scanning electron microscope (SEM) and scanning electron microscope (SEM), the grain size of DGS1 is actually the climatic-geological record of many alternations of the winter monsoon since the Holocene. Accordingly, the Holocene climate recorded by the DGS1 particle size signal is divided into four phases: the period of early Holocene, the peak of Holocene, the period of transition from the warm-cold period to the cold-period, and the period of desertification with unstable cooling.