塔里木盆地塔北隆起奥陶系&mdash;&mdash;侏罗系泥岩稀土元素地球化学特征

张沛; 郑建平; 张瑞生; 余淳梅

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塔里木盆地塔北隆起奥陶系——侏罗系泥岩稀土元素地球化学特征

张沛, 郑建平, 张瑞生, 余淳梅

文章导航 > 沉积学报 > 2005 > 23(4): 740-746

张沛, 郑建平, 张瑞生, 余淳梅. 塔里木盆地塔北隆起奥陶系——侏罗系泥岩稀土元素地球化学特征[J]. 沉积学报, 2005, 23(4): 740-746.

引用本文:

张沛, 郑建平, 张瑞生, 余淳梅. 塔里木盆地塔北隆起奥陶系——侏罗系泥岩稀土元素地球化学特征[J]. 沉积学报, 2005, 23(4): 740-746.

ZHANG Pei, ZHENG Jian-ping, ZHANG Rui-sheng, YU Chun-mei. Rare Earth Elemental Character istics of Ordovician-Jurassic Mudstone in Tabei Uplift, Tarin Basin[J]. Acta Sedimentologica Sinica, 2005, 23(4): 740-746.

Citation:

ZHANG Pei, ZHENG Jian-ping, ZHANG Rui-sheng, YU Chun-mei. Rare Earth Elemental Character istics of Ordovician-Jurassic Mudstone in Tabei Uplift, Tarin Basin[J]. Acta Sedimentologica Sinica, 2005, 23(4): 740-746.

张沛, 郑建平, 张瑞生, 余淳梅. 塔里木盆地塔北隆起奥陶系——侏罗系泥岩稀土元素地球化学特征[J]. 沉积学报, 2005, 23(4): 740-746.

引用本文:

张沛, 郑建平, 张瑞生, 余淳梅. 塔里木盆地塔北隆起奥陶系——侏罗系泥岩稀土元素地球化学特征[J]. 沉积学报, 2005, 23(4): 740-746.

Citation:

塔里木盆地塔北隆起奥陶系——侏罗系泥岩稀土元素地球化学特征

中国地质大学地质过程与矿产资源国家重点实验室地球科学学院,武汉 430074

基金项目: 国家‘973'项目(G1999043303);国家自然科学基金项目(批准号:40273001)资助

详细信息

作者简介:
张沛，男，1980年出生，硕士研究生，岩石学。

中图分类号: P595

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文章访问数: 535
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Rare Earth Elemental Character istics of Ordovician-Jurassic Mudstone in Tabei Uplift, Tarin Basin

State Key Laboratory of Geological Processes and Mineral Resources, Faculty of Earth Sciences, China University of Geosciences, Wuhan 430074

摘要

摘要: 分析了塔里木盆地塔北隆起奥陶系、三叠系和侏罗系泥岩的稀土元素丰度。不同时代泥岩都表现出轻稀土富集、重稀土含量均一和具有Eu负异常特征;但它们∑LREE/∑HREE、LaN/YbN、(La/Yb)UCC、Eu/Eu和Ce/Ce等参数则显示这些泥岩形成时的物源和环境有差别。奥陶纪时,研究区处于相对稳定的沉积环境,物源为成熟度高的大陆上地壳;二叠纪到三叠纪构造—火山活动强烈,部分沉积物来自火山岩的风化;侏罗纪塔北隆起区则进入稳定构造沉降阶段。这一差别对认识塔里木盆地及周边造山带形成演化研究有指示意义。
- 泥岩 /
- 稀土元素 /
- 物源 /
- 沉积环境 /
- 塔北隆起 /
- 塔里木盆地
Abstract: Rare earth element (REE) abundance of Ordovician, Triassic and Jurassic mudstone in the Tabei up lift,Tarim basin has been analysed. All the mudstones show the characteristics of high LREE content, uniform HREE and negative Eu anomaly. The ratios such as ΣLREE /ΣHREE, LaN /YbN , (La /Yb) UCC , Eu /Eu³ and Ce /Ce³, however, are obviously different among them, and thus reflecting the different sources and environments when they were formed. The mudstones formed in different ages display variable degrees of REE differentiation and negative Eu anomaly. The Ordovician mudstones have high ratios of ΣLREE /ΣHREE and LaN /YbN (12.1 and 19.8) and significant negative Eu anomaly ( Eu /Eu³= 0.59). The Triassic mudstones, however, show unusual low ratios of ΣLREE /ΣHREE and LaN /YbN (5.9 and 7.7) and small negative Eu anomaly ( Eu /Eu³= 0.78). The Jurassic mudstones are similar to the Ordovician samp les except less negative Eu anomaly ( Eu /Eu ³= 0.72). Similarly, UCC - normalizedm REE patterns of samples also show significant changeswithin different ages. In general, the Ordovician and Jurassic mudstones show slight enrichment of LREE relative to UCC, whereas the Triassic ones show strong LREE depletion.These characteristics indicate that the Ordovician mudstoneswere formed under a relatively stable sedimentary environ- ment. The sources should be the upper continental crust with high maturity. During Permian - Triassic times, the north of the Tarim basin was tectonic and volcanic, which provide abundant volcanic materials. It stepped into the stable sinking period in Jurssic. The REE difference amongmudstones has indicating significance for studying the formation and evolution of the Tarim basin and surrounding orogenic belt
- Mudstone /
- REE contents /
- provenance /
- sedimentary environment /
- Tabei up lift /
- Tarim basin

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参考文献(1)

[1]

1 赵振华. 微量元素地球化学原理[M].北京:科学出版社,1997.143-223.

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8 张廷山,陈晓慧,兰光志. 川东南地区志留纪稀土元素分布及其地质意义[J].西南石油学院学报,1998,(03):26-30.

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10 朱如凯,郭宏莉,何东博. 中国西北地区石炭系泥岩稀土元素地球化学特征及其地质意义[J].现代地质,2002,(02):130-136.

11 于炳松,陈建强,李兴武. 塔里木盆地下寒武统底部黑色页岩地球化学及其岩石圈演化意义[J].中国科学D辑,2002,(05):374-382.

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塔里木盆地塔北隆起奥陶系——侏罗系泥岩稀土元素地球化学特征

中国地质大学地质过程与矿产资源国家重点实验室地球科学学院,武汉 430074

基金项目: 国家‘973'项目(G1999043303);国家自然科学基金项目(批准号:40273001)资助

作者简介:
张沛，男，1980年出生，硕士研究生，岩石学。

收稿日期: 2004-11-23
修回日期: 2005-01-21
刊出日期: 2005-12-10

中图分类号: P595

关键词:

泥岩 /

物源 /

摘要: 分析了塔里木盆地塔北隆起奥陶系、三叠系和侏罗系泥岩的稀土元素丰度。不同时代泥岩都表现出轻稀土富集、重稀土含量均一和具有Eu负异常特征;但它们∑LREE/∑HREE、LaN/YbN、(La/Yb)UCC、Eu/Eu和Ce/Ce等参数则显示这些泥岩形成时的物源和环境有差别。奥陶纪时,研究区处于相对稳定的沉积环境,物源为成熟度高的大陆上地壳;二叠纪到三叠纪构造—火山活动强烈,部分沉积物来自火山岩的风化;侏罗纪塔北隆起区则进入稳定构造沉降阶段。这一差别对认识塔里木盆地及周边造山带形成演化研究有指示意义。

English Abstract

Rare Earth Elemental Character istics of Ordovician-Jurassic Mudstone in Tabei Uplift, Tarin Basin

State Key Laboratory of Geological Processes and Mineral Resources, Faculty of Earth Sciences, China University of Geosciences, Wuhan 430074

Received Date: 2004-11-23
Rev Recd Date: 2005-01-21
Publish Date: 2005-12-10

Keywords:

Abstract: Rare earth element (REE) abundance of Ordovician, Triassic and Jurassic mudstone in the Tabei up lift,Tarim basin has been analysed. All the mudstones show the characteristics of high LREE content, uniform HREE and negative Eu anomaly. The ratios such as ΣLREE /ΣHREE, LaN /YbN , (La /Yb) UCC , Eu /Eu³ and Ce /Ce³, however, are obviously different among them, and thus reflecting the different sources and environments when they were formed. The mudstones formed in different ages display variable degrees of REE differentiation and negative Eu anomaly. The Ordovician mudstones have high ratios of ΣLREE /ΣHREE and LaN /YbN (12.1 and 19.8) and significant negative Eu anomaly ( Eu /Eu³= 0.59). The Triassic mudstones, however, show unusual low ratios of ΣLREE /ΣHREE and LaN /YbN (5.9 and 7.7) and small negative Eu anomaly ( Eu /Eu³= 0.78). The Jurassic mudstones are similar to the Ordovician samp les except less negative Eu anomaly ( Eu /Eu ³= 0.72). Similarly, UCC - normalizedm REE patterns of samples also show significant changeswithin different ages. In general, the Ordovician and Jurassic mudstones show slight enrichment of LREE relative to UCC, whereas the Triassic ones show strong LREE depletion.These characteristics indicate that the Ordovician mudstoneswere formed under a relatively stable sedimentary environ- ment. The sources should be the upper continental crust with high maturity. During Permian - Triassic times, the north of the Tarim basin was tectonic and volcanic, which provide abundant volcanic materials. It stepped into the stable sinking period in Jurssic. The REE difference amongmudstones has indicating significance for studying the formation and evolution of the Tarim basin and surrounding orogenic belt

张沛, 郑建平, 张瑞生, 余淳梅. 塔里木盆地塔北隆起奥陶系——侏罗系泥岩稀土元素地球化学特征[J]. 沉积学报, 2005, 23(4): 740-746.

引用本文:

张沛, 郑建平, 张瑞生, 余淳梅. 塔里木盆地塔北隆起奥陶系——侏罗系泥岩稀土元素地球化学特征[J]. 沉积学报, 2005, 23(4): 740-746.

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塔里木盆地塔北隆起奥陶系——侏罗系泥岩稀土元素地球化学特征

作者简介:
张沛，男，1980年出生，硕士研究生，岩石学。

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Rare Earth Elemental Character istics of Ordovician-Jurassic Mudstone in Tabei Uplift, Tarin Basin

计量

目录

塔里木盆地塔北隆起奥陶系——侏罗系泥岩稀土元素地球化学特征

中国地质大学地质过程与矿产资源国家重点实验室地球科学学院,武汉 430074

作者简介:
张沛，男，1980年出生，硕士研究生，岩石学。

English Abstract

Rare Earth Elemental Character istics of Ordovician-Jurassic Mudstone in Tabei Uplift, Tarin Basin

State Key Laboratory of Geological Processes and Mineral Resources, Faculty of Earth Sciences, China University of Geosciences, Wuhan 430074

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塔里木盆地塔北隆起奥陶系——侏罗系泥岩稀土元素地球化学特征

作者简介: 张沛，男，1980年出生，硕士研究生，岩石学。

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Rare Earth Elemental Character istics of Ordovician-Jurassic Mudstone in Tabei Uplift, Tarin Basin

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塔里木盆地塔北隆起奥陶系——侏罗系泥岩稀土元素地球化学特征

中国地质大学地质过程与矿产资源国家重点实验室地球科学学院,武汉 430074

作者简介: 张沛，男，1980年出生，硕士研究生，岩石学。

English Abstract

Rare Earth Elemental Character istics of Ordovician-Jurassic Mudstone in Tabei Uplift, Tarin Basin

State Key Laboratory of Geological Processes and Mineral Resources, Faculty of Earth Sciences, China University of Geosciences, Wuhan 430074

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联系我们

作者简介:
张沛，男，1980年出生，硕士研究生，岩石学。

作者简介:
张沛，男，1980年出生，硕士研究生，岩石学。