地质通报2024，Vol.43Issue(9)：1498-1514,17.DOI:10.12097/gbc.2023.08.039
松嫩平原齐齐哈尔地区拜泉县地表基质特征及其古环境恢复
Sedimentary characteristics analysis and paleoenvironmental restoration of the ground substrate in Baiquan County,Qiqihar area,Songnen Plain
摘要
Abstract
Ground substrate is a new concept in natural resource management,which is the fundamental material supporting the breeding of various natural resources.Strengthening the analysis of ground substrate sedimentary environment and the restoration of paleoenvironment is of great significance for studying its formation mechanism.This article analyzes the sedimentary characteristics and the sedimentary environment of a 50 m shallow ground substrate,based on the data of full core clay minerals,carbonates,magnetic susceptibility,and carbon elements.The research results indicate that there are 16 layers of soil substrate vertically distributed in the study area,exhibiting a transitional sedimentary evolution from deep to shallow,characterized by lacustrine sedimentation →continental eolian facies→meadow facies.The deep lakeside facies and embankment sediments are formed in cold and extremely dry environments,the middle deep lake sediments are formed in warm and humid environments,and the shallow surface meadow and aeolian sediments are formed in relatively dry and cold environments.Based on previous data and 14C,photoluminescence and ESR dating results,the sedimentary evolution stage of the study area is divided into the late Early Pleistocene to early Middle Pleistocene dry cold sedimentary stage,the warm lacustrine sedimentary stage in the middle and late Middle Pleistocene,the Late Pleistocene to Early Holocene eolian loess sedimentary stage and the black soil sedimentary stage in the Middle and Late Holocene.关键词
松嫩平原/地表基质/拜泉地区/沉积环境/古环境恢复Key words
Songnen Plain/ground substrate/Baiquan area/sedimentary environment/paleoenvironmental restoration分类
天文与地球科学引用本文复制引用
邵兴坤,侯红星,任柄璋,时凌峰,詹泽东,西广越,李俊华,曹龙宇,高远..松嫩平原齐齐哈尔地区拜泉县地表基质特征及其古环境恢复[J].地质通报,2024,43(9):1498-1514,17.基金项目
中国地质调查局项目《松嫩平原齐齐哈尔地区黑土地地表基质调查》(编号:DD20220855) （编号:DD20220855）
