柴达木盆地察尔汗盐湖CH0310钻孔沉积物磁化率及其影响因素分析

张俊辉

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柴达木盆地察尔汗盐湖CH0310钻孔沉积物磁化率及其影响因素分析

张俊辉

文章导航 > 沉积学报 > 2010 > 28(4): 790-797

张俊辉. 柴达木盆地察尔汗盐湖CH0310钻孔沉积物磁化率及其影响因素分析[J]. 沉积学报, 2010, 28(4): 790-797.

引用本文:

张俊辉. 柴达木盆地察尔汗盐湖CH0310钻孔沉积物磁化率及其影响因素分析[J]. 沉积学报, 2010, 28(4): 790-797.

ZHANG Junhui. Analysis on the Magnetic Susceptibility and Its Influence Factors of theLake Sediments in the CH0310 Core of Qarhan Paleolake, Qaidam Basin[J]. Acta Sedimentologica Sinica, 2010, 28(4): 790-797.

Citation:

ZHANG Junhui. Analysis on the Magnetic Susceptibility and Its Influence Factors of theLake Sediments in the CH0310 Core of Qarhan Paleolake, Qaidam Basin[J]. Acta Sedimentologica Sinica, 2010, 28(4): 790-797.

张俊辉. 柴达木盆地察尔汗盐湖CH0310钻孔沉积物磁化率及其影响因素分析[J]. 沉积学报, 2010, 28(4): 790-797.

引用本文:

张俊辉. 柴达木盆地察尔汗盐湖CH0310钻孔沉积物磁化率及其影响因素分析[J]. 沉积学报, 2010, 28(4): 790-797.

Citation:

柴达木盆地察尔汗盐湖CH0310钻孔沉积物磁化率及其影响因素分析

张俊辉

兰州大学资源与环境学院西部环境教育部重点实验室兰州730000

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张俊辉

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Analysis on the Magnetic Susceptibility and Its Influence Factors of theLake Sediments in the CH0310 Core of Qarhan Paleolake, Qaidam Basin

ZHANG Junhui

College of Resources and Environment, Key Laboratory of West China's Environmental Systems with the Ministry of Education, Lanzhou University, Lanzhou 730000

More Information

Corresponding author: ZHANG Junhui

摘要

摘要: 通过对长为523 m的柴达木盆地察尔汗盐湖CH0310钻孔沉积物岩性、磁性特征、高频质量磁化率、低频质量磁化率、频率磁化率和总有机碳（TOC）的实验分析，结果表明：CH0310钻孔中磁铁矿是沉积物磁化率的主要贡献者；由于受气候和环境的影响与控制，以弱氧化环境为主CH0310钻孔中沉积物的磁化率与粗砂粒级含量成正相关与粘土级含量反相关关系；进一步对磁化率和TOC的相关性分析发现，在不同的沉积层磁化率和TOC的相关性表现出正负差异，这反映了磁化率对气候与环境的响应模式在CH0310钻孔不同层位并不完全相同，揭示出湖泊磁化率影响因素的复杂性和它作为气候代用指标的不确定性，因此认为对于地处高原干旱区沉积速率快、沉积层特别厚的湖泊来说，如果用单一的磁化率指标来反映或恢复古气候和古环境的变化需要特别慎重。
- 磁化率TOC岩性〖KG1*2〗沉积环境察尔汗盐湖
Abstract: By analyzing lithology, magnetic features, the highfrequency and the lowfrequency quality magnetic susceptibility, frequency magnetic susceptibility and total organic matter (TOC) of the sediments of the 523m CH0310 core in Qarhan paleolake, Qaidam Basin, the conclusion shows that magnetite is the main contributor to the magnetic susceptibility in the CH0310 core. Due to the impact and control of the climate and environment, magnetic susceptibility is positively correlated with coarse sand content and negatively correlated with the clay content in sediments from the weak oxidation environmentdominated CH0310 core. Based on the further analysis on the relevance of magnetic susceptibility and TOC, the results present that the relevance of magnetic susceptibility and TOC in the different sediment layers show the positive and negative differences, reflecting the different corresponding model of magnetic susceptibility to climate and environment in CH0310 different layers, revealing the complexity of the factors as well as the uncertainty of the lake magnetic susceptibility as a proxy indicator of climate. Therefore, for the lake which is located in the plateau and arid area and has the rapid sedimentation rate and thicker sediment layers, special care should be taken if using magnetic susceptibility as a single indicator to reflect and reconstruct the paleoclimatic and paleoenvironmental changes.
- magnetic susceptibility

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[2]	熊鹰, 姚泾利, 李凌, 侯云东, 肖笛, 聂万才, 赵东方, 谭秀成. 鄂尔多斯盆地东北部奥陶系马五₁₊₂微生物碳酸盐岩沉积特征及储集意义 . 沉积学报, 2016, 34(5): 963-972. doi: 10.14027/j.cnki.cjxb.2016.05.015
[3]	刘新社, 熊鹰, 文彩霞, 李凌, 王飞燕, 何为, 杨清宇, 肖笛, 谭秀成. 鄂尔多斯盆地东北部马五₁₊₂亚段岩石类型及沉积环境 . 沉积学报, 2016, 34(5): 912-923. doi: 10.14027/j.cnki.cjxb.2016.05.010
[4]	. 新疆伊犁晚全新世风成沙—古土壤序列磁化率特征及气候变化 . 沉积学报, 2012, 30(5): 928-936.
[5]	. 贵州安顺新民二叠系—三叠系界线剖面磁化率变化及古气候环境意义 . 沉积学报, 2012, 30(5): 817-824.
[6]	. 北京市昌平区钻孔岩芯的磁化率与粒度组份变化的相关性研究 . 沉积学报, 2012, 30(3): 572-579.
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柴达木盆地察尔汗盐湖CH0310钻孔沉积物磁化率及其影响因素分析

张俊辉

兰州大学资源与环境学院西部环境教育部重点实验室兰州730000

通讯作者: 张俊辉

收稿日期: 1900-01-01
修回日期: 1900-01-01
刊出日期: 2010-08-10

关键词:

磁化率TOC岩性〖KG1*2〗沉积环境察尔汗盐湖

摘要: 通过对长为523 m的柴达木盆地察尔汗盐湖CH0310钻孔沉积物岩性、磁性特征、高频质量磁化率、低频质量磁化率、频率磁化率和总有机碳（TOC）的实验分析，结果表明：CH0310钻孔中磁铁矿是沉积物磁化率的主要贡献者；由于受气候和环境的影响与控制，以弱氧化环境为主CH0310钻孔中沉积物的磁化率与粗砂粒级含量成正相关与粘土级含量反相关关系；进一步对磁化率和TOC的相关性分析发现，在不同的沉积层磁化率和TOC的相关性表现出正负差异，这反映了磁化率对气候与环境的响应模式在CH0310钻孔不同层位并不完全相同，揭示出湖泊磁化率影响因素的复杂性和它作为气候代用指标的不确定性，因此认为对于地处高原干旱区沉积速率快、沉积层特别厚的湖泊来说，如果用单一的磁化率指标来反映或恢复古气候和古环境的变化需要特别慎重。

English Abstract

Analysis on the Magnetic Susceptibility and Its Influence Factors of theLake Sediments in the CH0310 Core of Qarhan Paleolake, Qaidam Basin

ZHANG Junhui

College of Resources and Environment, Key Laboratory of West China's Environmental Systems with the Ministry of Education, Lanzhou University, Lanzhou 730000

Corresponding author: ZHANG Junhui

Received Date: 1900-01-01
Rev Recd Date: 1900-01-01
Publish Date: 2010-08-10

Keywords:

magnetic susceptibility

Abstract: By analyzing lithology, magnetic features, the highfrequency and the lowfrequency quality magnetic susceptibility, frequency magnetic susceptibility and total organic matter (TOC) of the sediments of the 523m CH0310 core in Qarhan paleolake, Qaidam Basin, the conclusion shows that magnetite is the main contributor to the magnetic susceptibility in the CH0310 core. Due to the impact and control of the climate and environment, magnetic susceptibility is positively correlated with coarse sand content and negatively correlated with the clay content in sediments from the weak oxidation environmentdominated CH0310 core. Based on the further analysis on the relevance of magnetic susceptibility and TOC, the results present that the relevance of magnetic susceptibility and TOC in the different sediment layers show the positive and negative differences, reflecting the different corresponding model of magnetic susceptibility to climate and environment in CH0310 different layers, revealing the complexity of the factors as well as the uncertainty of the lake magnetic susceptibility as a proxy indicator of climate. Therefore, for the lake which is located in the plateau and arid area and has the rapid sedimentation rate and thicker sediment layers, special care should be taken if using magnetic susceptibility as a single indicator to reflect and reconstruct the paleoclimatic and paleoenvironmental changes.

张俊辉. 柴达木盆地察尔汗盐湖CH0310钻孔沉积物磁化率及其影响因素分析[J]. 沉积学报, 2010, 28(4): 790-797.

引用本文:

张俊辉. 柴达木盆地察尔汗盐湖CH0310钻孔沉积物磁化率及其影响因素分析[J]. 沉积学报, 2010, 28(4): 790-797.

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柴达木盆地察尔汗盐湖CH0310钻孔沉积物磁化率及其影响因素分析

通讯作者:
张俊辉

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Analysis on the Magnetic Susceptibility and Its Influence Factors of theLake Sediments in the CH0310 Core of Qarhan Paleolake, Qaidam Basin

Corresponding author: ZHANG Junhui

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柴达木盆地察尔汗盐湖CH0310钻孔沉积物磁化率及其影响因素分析

兰州大学资源与环境学院西部环境教育部重点实验室兰州730000

通讯作者: 张俊辉

English Abstract

Analysis on the Magnetic Susceptibility and Its Influence Factors of theLake Sediments in the CH0310 Core of Qarhan Paleolake, Qaidam Basin

College of Resources and Environment, Key Laboratory of West China's Environmental Systems with the Ministry of Education, Lanzhou University, Lanzhou 730000

Corresponding author: ZHANG Junhui

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柴达木盆地察尔汗盐湖CH0310钻孔沉积物磁化率及其影响因素分析

通讯作者: 张俊辉

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Analysis on the Magnetic Susceptibility and Its Influence Factors of theLake Sediments in the CH0310 Core of Qarhan Paleolake, Qaidam Basin

Corresponding author: ZHANG Junhui

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柴达木盆地察尔汗盐湖CH0310钻孔沉积物磁化率及其影响因素分析

兰州大学资源与环境学院西部环境教育部重点实验室兰州730000

通讯作者: 张俊辉

English Abstract

Analysis on the Magnetic Susceptibility and Its Influence Factors of theLake Sediments in the CH0310 Core of Qarhan Paleolake, Qaidam Basin

College of Resources and Environment, Key Laboratory of West China's Environmental Systems with the Ministry of Education, Lanzhou University, Lanzhou 730000

Corresponding author: ZHANG Junhui

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