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

ZHANG Pei; ZHENG Jian-ping; ZHANG Rui-sheng; YU Chun-mei

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Article Navigation > Acta Sedimentologica Sinica > 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.

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

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

References

[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.

2 杨守业,李从先. REE示踪沉积物物源研究进展[J].地球科学进展,1999,(02):164-167.

3 Cullers R L,Barrett T,Carlson R. REE and mineralogic changes in Holocene soil and stream sediment[J].Chemical Geology,1987.275-297.

4 Cullers R L,Basu A,Suttner L J. Geochemical signature of provenance in sand-size mineral in soil and stream near the tabacco root batholith,Montana,USA[J].Chemical Geology,1988.335-348.

5 杨守业,李从先,Lee C B. 黄海周边河流的稀土元素地球化学及沉积物物源示踪[J].科学通报,2003,(11):1233-1236.

6 邵磊,朱伟林,吴国瑄. 渤中凹陷及周边地区沉积岩若干稀土元素特征[J].同济大学学报(自然科学版),2001,(06):662-665.

7 邵磊,朱伟林,吴国瑄. 珠江口及北部湾盆地泥岩地球化学特点[J].同济大学学报(自然科学版),2000,(05):523-527.

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.

9 于炳松,裘愉卓. 贵州地区新元古代一三叠纪沉积岩中稀土元素地球化学特征与地壳演化[J].现代地质,1998,(03):26-30.

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.

12 贾承造. 中国塔里木盆地构造特征与油气[M].北京:石油工业出版社,1997.171-255,291-306.

13 Lin S L,He M,Hu S H. Precise determination of trace elements in geological samples by ICPMS using compromise conditions and fine matrix-matching strategy[J].Analytical Sciences,2000.1290-1296.

14 陈汉林,杨树锋,董传万. 塔里木盆地地质热事件研究[J].科学通报,1997,(10):1096-1098.

15 范学文,万里皋,时卫东. 塔北隆起中、新生界层序地层学研究[J].新疆石油地质,1996,(04):346-349.

16 顾家裕,何斌. 塔里木盆地轮南地区三叠系扇三角洲沉积与储集层研究[J].沉积学报,1994,(02):54-62.

17 Taylor S R,McLennan S M. The continental crust: its composition and evolution.An examination of the geochemical record preserved in sedimentary rocks[M].Oxford London:Blackwell Scientific Publications,1985.1-301.

18 McLennan S M. Rare earth elements in sedimentary rocks: influence of provenance and sedimentary processes[A].Washington:The Mineralogical Society of America,1989.169-200.

19 McLennan S M,Hemming S,McDaniel M J. Geochemical approaches to sedimentation,provenance and tectonics[A].Boulder,Colorado:Geological Society of America Special Paper 284,1993.21-40.

20 Haskin M A,Haskin L A. Rare earth in European shales: a redetermination[J].Science,1966.507-509.

21 王中刚,于学元,赵振华. 稀土元素地球化学[M].北京:科学出版社,1989.90-93.

22 Muny R W. Rare earth elements as indicators of different marine depositional environments in chert and shale[J].Geology,1990.268-271.

23 Boynton W V. Cosmochemistry of the rare earth element[A].Amsterdam:Elsevier,1984.63-114.

24 Bhatia M R. Rare earth element geochemistry of Australian Paleozoic graywackes and mudrocks: Provenance and tectonic control[J].Sedimentary Geology,1985.97-113.

25 Bhatia M R,Crook K A W. Trace element characteristics of graywacks and tectonic setting discriminaton of sedimentary basins[J].Contributions to Mineralogy & Petrology,1986.181-193.

26 邵磊,李献华,韦刚健. 南海陆坡高速堆积物的物质来源[J].中国科学d辑,2001,(10):828-833.

27 李双应,岳书仓,杨建. 皖北新元古代刘老碑组页岩的地球化学特征及其地质意义[J].地质科学,2003,(02):241-253.

28 Savoy L,Stevenson R K,Mountjoy E W. Provenance of Upper Devonian-Lower Carboniferous miogeosynclinal strata,southeastern Canadian Cordillera: Link between tectonics and sedimentation[J].Journal of Sedimentary Research,2000,(01):181-193.

29 姜常义,穆艳梅,白开寅. 南天山花岗岩类的年代学、岩石学、地球化学及其构造环境[J].岩石学报,1999,(02):298-308.

30 陈汉林,杨树锋,董传万. 塔里木盆地二叠纪基性岩带的确定及大地构造意义[J].地球化学,1997,(06):77-87.

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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

Received Date: 2004-11-23

Rev Recd Date: 2005-01-21

Publish Date: 2005-12-10

Key words:

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

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

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