摘要
为防治黄土土壤侵蚀和治理黄河 ,本文根据磁性地层学、年代地层学 (热释光法 ) ,并结合岩石地层学 ,生物地层学和气候地层学等方法 ,对河南省黄河流域广泛分布的陆沉积黄土进行分析。将区内黄土划分为上更新统黄土 (Qeol3 )、中更新统黄土 (Qeol2 )、下更新统黄土 (Qeol1)。研究结果表明 ,不同时期的黄土 ,其岩性、结构、古地磁特性以及古土壤层数等有明显的差异。此外 ,不同时期黄土所含的植物孢粉组合特征亦不相同 ,从而反映了更新世冷暖交替的古气候环境特征。
Continental deposit loess distributed in henan Province far and wide. It has typical sequence feature of loess and paleosol. makes the division and the contrast of the loess stratum each other in this area by several methods which are magnetostratigraphy, chronostratigraphy, petrotratigraphy, biostratigraphy(thermoluminescence) and climatestratigraphy. It was divided top of Pleistocene series(Q eol 3),medium of Pleistocene series(Q eol 2),underpart of Pleistocene series(Q eol 1).different of period loess have different of composition,structure, characteristic of paleomagnetism and how many layers of paleosol. different of period loess have different of composition properties of the plant pollen fossil. Whereby it reflect geological climate environment features of alternate cold and heat of Pleistocene.
出处
《中国海洋大学学报（自然科学版）》
CAS
CSCD
北大核心
2005年第1期62-66,共5页
Periodical of Ocean University of China
基金
国家自然科学基金资助项目 (40 2 72 1 0 8)资助
关键词
黄土地层
更新世
古气候
环境
loess strata
Pleistocene
geological climate
environment
