辽宁北部至内蒙古东南部地区晚更新世风成砂与乌尔吉组的研究

根据最新的光释光测试结果及产出化石的年代，乌尔吉组的年代应为中更新世.乌尔吉组岩性以灰黄色砂、亚砂土为主，孔隙及柱状节理发育，夹不规则姜块状钙质结核，主要分布于内蒙古通辽白音花和辽宁阜新旧庙地区.上更新统风积物以土黄色细粉砂、深灰色粉砂为主，弱固结，柱状节理发育，不夹姜块状钙质结核，主要分布在内蒙古库伦旗以北、科尔沁左翼后旗等地区.

STUDY OF THE LATE PLEISTOCENE EOLIAN SEDIMENTS AND WUERJI FORMATION IN THE AREA FROM NORTHERN LIAONING TO SOUTHEASTERN INNER MONGOLIA

Based on the results of the latest OSL tests and fossil occurrences, the time of Wuerji Formation is judged as Middle Pleistocene. Lithologically, the Wuerji Formation is dominated by grayish-yellow sand and sand loam, developed with porosities, columnar joints and irregular ginger-like calcareous concretions. The strata are mainly distributed in Baiyinhua area in Tongliao City, Inner Mongolia, as well as in Jiumiao area in Fuxin City, Liaoning Province. The Upper Pleistocene eolian sediments are composed of mainly yellowish-brown fine slit and dark gray silt, with weak consolidation and developed columnar joints, but without ginger-like calcareous concretions. These strata are distributed mainly in the north of Hure Qi and Horqin Zuoyi Houqi of Inner Mongolia.