基于元素地球化学场研究第四纪地貌地质单元  

A study of Quaternary geomorphologic geological unit based on element geochemical field

作　　者：张兆祎 靳松[1,2,3] 王建武 杨红宾 王克冰 肖文暹 毕立 

机构地区：[1]河北省地质调查院,河北石家庄050081 [2]中国地质大学(武汉)地球科学学院,湖北武汉430074 [3]中国地质大学(武汉)地质过程与矿产资源国家重点实验室,湖北武汉430074

出　　处：《物探与化探》2016年第1期1-9,共9页Geophysical and Geochemical Exploration

基　　金：中国地质调查局区调修测项目(1212011182237);区调项目(1212011220489);河北省农业地质调查项目(200414200007)

摘　　要：在河北邯邢平原区第四纪地貌学研究中,采用形态—成因—岩性多级划分原则,将研究区地貌划分出2个一级单元、9个二级单元、26个三级单元;同时利用多目标地球化学数据,以Si O2、Al2O3、Fe2O3、w(Na)/w(Rb)及Rb、U、Ga均一化累加和等地球化学指标作为地貌单元划分的指标。研究证明,这些地球化学指标在划分古河道、冲洪积扇形,甚至在划分滹沱河扇期次、漳河冲积扇期次及泛滥平原区的分区(带)上都具有明显效果;在识别宁晋泊、大陆泽、永年洼等沉积洼地中有清晰的印证;依据元素地球化学场研究地貌单元划分的尝试,取得了较理想的效果。In Han-Xing plain of Hebei Province, the authors used multistage classification principles of the form-causes-lithology to study the Quaternary geomorphologic unit. The geomorphology of the study area was divided into two primary units, nine secondary units and twenty-six grade three units. By using the multi-target geochemical data in Hebei Province, with SiO2, A1203, Fe203, w（ Na）/w （ Rb）, homogenization accumulation of Rb, U and Ga as the indices for Quaternary geomorphologic geological unit division, tlae divi- sion of Han-Xing plain in Hebei Province was conducted. Research proves that these geochemical indicators have an obvious effect in dividing ancient river channel, Zhanghe alluvial proluvial fan, even the stage of Hutuo River fan and the zoning of flood plain area. There is a clear proof in identifying Ningjinbo, Daliuze and Yongnianwa depositional depressions. The experiment based on the element geochemistry for studying geological units has been successfully conducted.

关 键 词：邯邢平原区 元素地球化学场 第四纪 地貌地质 地球化学指标 

分 类 号：P632[天文地球—地质矿产勘探]