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Debates about the Origin of Loess and Their Significances
Author(s): 
Pages: 38-45
Year: Issue:  3
Journal: Journal of Subtropical Resources and Environment

Keyword:  The origin of loessaeolian depositpaleoenvironment interpretationaeolian originaqueous originsignificance;
Abstract: 人类对自然界的认识过程总是由浅入深循序渐进的.回顾过去,中国黄土成因经历了从“水成”到“风成”这样一个曲折的认识过程.通过分析黄土成因争论的历程,得到如下启示:1)过去的黄土成因争论源于人们不认识黄土层中的古土壤,因此识别地层中古土壤对重建古地理环境具有重大意义.2)水平层状地层并非都是水平沉积层理,也有可能是古土壤发生层次,具有水平层理的沉积地层则可能意味着在水中沉积形成,而古土壤层则是在地表环境形成.3)古土壤层的特点是古土壤层具有土壤发生层次,因此各层次之间一般呈现为渐变特征,而沉积地层通常具有明显的顶部和底部,显示着截然变化.4)在总结新生代古土壤特点的基础上,重新认识更老地层的古地理环境,发挥古土壤在研究地层成因、重建古气候等方面的作用.
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