[1]雷国良,张虎才,朱芸,等.湖相沉积物酸溶与酸不溶组分常量元素的地球化学行为及其环境意义[J].山地学报,2013,(02):174.
　LEI Guoliang,ZHANG Hucai,ZHU Yun,et al.Geochemical Behavior of Acid Soluble and Insoluble Fractions and Their Application to Paleoenvironment Reconstruction of Lacustrine Sediment[J].Mountain Research,2013,(02):174.
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湖相沉积物酸溶与酸不溶组分常量元素的地球化学行为及其环境意义()
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《山地学报》[ISSN:1008-2186/CN:51-1516]

卷:
期数:
2013年02期
页码:
174
栏目:
山地环境
出版日期:
2013-01-01

文章信息/Info

Title:
Geochemical Behavior of Acid Soluble and Insoluble Fractions and Their Application to Paleoenvironment Reconstruction of Lacustrine Sediment
作者:
雷国良;张虎才;朱芸;张文翔;常凤琴;
1.福建师范大学地理研究所，福建省湿润亚热带山地生态省部共建国家重点实验室培育基地，福建 福州 350007；
2.云南师范大学旅游与地理科学学院，高原湖泊生态与全球变化云南省重点实验室，昆明 呈贡 650500
Author(s):
LEI Guoliang; ZHANG Hucai;  ZHU Yun;  ZHANG Wenxiang;  CHANG Fengqin(183)
1. Institute of Geography，Fujian Normal University，& Key Laboratory of Humid Subtropical Ecogeographical Process，Ministry of Education Fuzhou 350007，China；
2.The College of Tourism & Geography Science，Yunnan Normal University，Kunming 650092，China
关键词:
湖泊沉积物; 矿物; 常量元素; Mg/Ca比值
Keywords:
lacustrine sediment; mineral; major elements; Mg/Ca
分类号:
P595，Xl44
文献标志码:
A
摘要:
湖泊沉积物元素地球化学是探讨湖泊沉积环境的有效代用指标之一。通过青藏高原北缘柴达木盆地湖相沉积剖面沉积物中酸溶组分(AS)和酸不溶组分(AI)常量元素(K,Ca,Na,Mg,Ti,Fe,Mn和Al)的测试,分析了不同组分中常量元素的分布特征及其元素含量与矿物组成的关系。结果显示:剖面中常量元素的组成与沉积物矿物成分密切相关,酸溶组分与酸不溶组分中元素含量差别较大,揭示出不同组分对湖泊沉积环境的响应模式存在差异。其中,沉积物酸不溶组分中的Al、Fe等元素与石英矿物相对含量变化呈负相关,而与粘土矿物相对含量呈正相关,揭示出酸不溶组分元素变化与湖泊流域物质组成或风化强度等信息有关。沉积物酸溶组分常量...
Abstract:
The chemical elements of lacustrine sediments were sensitive to climatic change. Based on the measurement of major elements (K，Ca，Na，Mg，Ti，Fe，Mn and Al) of acid soluble (AS) and acid insoluble (AI) fractions of the Shell Bar Section from Qaidam Basin in NE Tibetan Plateau，the correlations of major elements with mineral assemblages，grainsize，content of carbonate and 87Sr/86Sr value were discussed. There was a strong correlation between major elements and minerals. Element Concentration of AS fraction shows larger various than AI fraction，indicating different response with environment change to AI and AS fractions. Elements Al and Fe concentration of AI fraction have a negative correlation with quartz and a positive correlation with clay mineral，indicating the weathering information in basin was recorded by AI fraction. The total concentration of AS fraction was lower and had a strong correlation with carbonate concentration，indicating the AS fraction was authigene in lake system. The correlations of Mg/Ca ratio in AS fraction with grainsize and87Sr/86Sr were analyzed，Mg/Ca in AS was influenced by Mg/Ca value of bedrock and failed to be used as index of salinity. Using detrending method，Mg/Ca in AS by recalculated showed strong correlation with grainsize and 87Sr/86Sr . So Mg/Ca was a reliable index of salinity in lake system. The chemical element analysis of AS and AI fractions was useful to extract and understand the climate signal recorded by lake sediment.

备注/Memo

备注/Memo:
收稿日期(Received date)：2012-06-09；改回日期(Accepted) : 2012-09-04。
基金项目（Foundation item）：国家自然科学
基金项目(41101189)，福建省公益类科研院所专项
基金项目(2011R1037-7) 。[National Natural Science Foundation of China(41101189)，Fujian Province Public Research Special Foundation(2011R1037-7).]
作者简介（Biography）：雷国良，男，1981年生，博士，助理研究员，湖泊沉积与环境演化专业。[Lei Guoliang, male, born in 1981, Ph d, assistant researcher, lake sediments and environmental evolution of professional] E-mail:leiguoliang@gmail.com
更新日期/Last Update: 1900-01-01