现代地质2011，Vol.25Issue(2)：211-218,8.
陕西省勉县-略阳地区寒武纪含碳岩系的地球化学特征及其成因
Genesis and Geochemical Characteristics of the Cambrian Carbonaceous Rock Series in Mianxian-Lüeyang Region, Shaanxi Province
摘要
Abstract
The formation of phosphorus and manganese ore deposit was closely related to the Cambrian carbonaceous rock series which were important prospecting criteria in Mianxian-Lüeyang region.Samples of carbonaceous rock series collected from the study area were analyzed for major and trace elements that were used to demonstrate the genesis.P, Mn element were relatively enriched in carbonaceous rock series and enrichment coefficients were similar, suggesting that the carbonaceous rock series were related to the genesis of the Mn and P deposit.Low MnO/TiO2 values, plots in Na-Mg and Sr-Ba diagram indicate sedimentary environment from the land closer to marginal sea of the continental slope.Low Sr/Ba, U/Th values and plots in the Al-Fe-Mn triangle diagram represent a non-hydrothermal sedimentary condition.The high V/( V + Ni) and δU values indicate an anoxic sedimentary environment, so the carbonaceous rock series were deposited in an anoxic oxygen (reduction) sedimentary environment.关键词
含碳岩系/地球化学/缺氧环境/非热水沉积/勉略地区/陕西省Key words
carbonaceous rock series/ geochemistry/ anoxic environment/ non-hydrothermal sediment/ Mianxian-Lüeyang region/ Shaanxi Province分类
天文与地球科学引用本文复制引用
乔耿彪,杨钟堂,李智明,杨晓勇,蓝翔华..陕西省勉县-略阳地区寒武纪含碳岩系的地球化学特征及其成因[J].现代地质,2011,25(2):211-218,8.基金项目
中国地质调查局地质调查项目(1212010010503) （1212010010503）
中央地质勘查基金试点项目(2007611007). （2007611007）
