Provenance of the lower Es2 in the Shanghe area of the Huimin sag  

作　　者：GAO Lihua HAN Zuozhen DANG Guangyao FAN Aiping YANG Renchao XU Xuebei 

机构地区：[1]College of Geological Science & Engineering, Shandong University of Science and Technology, Qingdao 266510, China [2]College of Chemistry and Chemical Engineering, Taishan Medical University, Tai'an 271016, China

出　　处：《Mining Science and Technology》2010年第3期453-459,477,共8页矿业科学技术（英文版）

基　　金：supported by the National Natural Science Foundation of China(No.40972043)

摘　　要：The provenance of the lower Es2 in the Shanghe area was determined from an approach incorporating analysis, elemental ratios,paleocurrent direction,the typomorphic characteristics of detritus and the distribution of conglomerate and gritstone in the peripheral basin.Typical elemental ratios characteristic of the sedimentary area were compared with those from the source areas as abstracted from sediments of the Huimin sag using cluster analysis.The results show that the distribution pattern focuses on Mg/Mn,Fe/K,Al/Na,Ba/Mn and Al/Mg.Mg/Mn is the highest ratio,from 25 to 45.This is similar to the pattern from the Precambrian.Furthermore,paleocurrent direction was used to determine provenance by examining the distribution of gritstone and the seismic progradational reflections.The research results indicate that the provenance is to the northwest in the Precambrian strata where the sand grain size is rough.To the east there is siltstone,fine sandstone and mudstone.This is significant for the exploration of oil and gas within the study area.The provenance of the lower Es2 in the Shanghe area was determined from an approach incorporating analysis, elemental ratios,paleocurrent direction,the typomorphic characteristics of detritus and the distribution of conglomerate and gritstone in the peripheral basin.Typical elemental ratios characteristic of the sedimentary area were compared with those from the source areas as abstracted from sediments of the Huimin sag using cluster analysis.The results show that the distribution pattern focuses on Mg/Mn,Fe/K,Al/Na,Ba/Mn and Al/Mg.Mg/Mn is the highest ratio,from 25 to 45.This is similar to the pattern from the Precambrian.Furthermore,paleocurrent direction was used to determine provenance by examining the distribution of gritstone and the seismic progradational reflections.The research results indicate that the provenance is to the northwest in the Precambrian strata where the sand grain size is rough.To the east there is siltstone,fine sandstone and mudstone.This is significant for the exploration of oil and gas within the study area.

关 键 词：provenance analysis typical element ratio Shanghe area palaeocurrent distribution of gritstone 

分 类 号：P618.130.2[天文地球—矿床学] P618.13[天文地球—地质学]