辽宁阜新北部至内蒙古库伦旗地区第四系冲、洪积沉积特征

辽宁阜新北部至内蒙古库伦旗地区的第四系冲、洪积地层分布广泛，但由于冲、洪积物岩性、岩相比较单调，在纵、横向上变化快，不易进行深入的研究.根据成因、孢粉以及形成时代将研究区第四系冲、洪积物划分出中更新统冲积物、上更新统冲洪积物、下全新统冲洪积物、中全新统冲积物、上全新统冲积物5个填图单位.不同时期的冲、洪积物沉积特征及沉积环境各具特色，形成了不同的地貌特征.确定冲、洪积物的沉积标志，并对其进行详细的划分，可以为研究区甚至我国整个北方地区提供第四系冲、洪积物各方面深入研究的资料.

SEDIMENTARY CHARACTERISTICS OF THE ALLUVIUM-DILUVIUM IN NORTHERN FUXIN OF LIAONING-HURE QI OF INNER MONGOLIA AREA

The Quaternary alluvium-diluvium is widely distributed in the northern Fuxin of Liaoning-Hure Qi of Inner Mongolia region. Yet it is not easy to conduct in-depth research due to simple lithology and petrofacies with sharp variation in vertical and horizontal directions. According to the genesis, sporopollen and forming age, the Quaternary alluvium-diluvium can be divided into five mapping units, namely the Middle Pleistocene alluvium, Upper Pleistocene diluvium, Lower Holocene alluvium-diluvium, Middle Holocene alluvium and Upper Holocene alluvium. The distinctive sedimentary characteristics and environment of different periods of alluvium-diluvium contribute to different geomorphic features. The determination of depositional marks of alluvium-diluvium and detailed divisions can provide data for thorough study in the region and even North China.