全部 标题 作者
关键词 摘要

OALib Journal期刊
ISSN: 2333-9721
费用:99美元

查看量下载量

相关文章

更多...
地球学报  2009 

贺兰山中南段奥陶系米钵山组的沉积环境与构造背景分析

DOI: 10.3975/cagsb.2009.01.09

Keywords: 贺兰山,米钵山组,浊积岩,微量元素,地球化学,沉积环境

Full-Text   Cite this paper   Add to My Lib

Abstract:

贺兰山中南段奥陶系米钵山组的岩石地球化学研究表明,其砂岩SiO2平均含量为75.18%;Al2O3为6.26%~14.36%,变化范围不大,但含量较高;TiO2/MnO值为3.05~58.00,变化范围较大。K2O/Na2O值0.63~9.13。页岩SiO2含量在68.77%~77.50%之间,TiO2/MnO值与Al2O3/MnO值都比较高,分别为21.30~51.00及大于450.00。Na2O含量偏低,部分样品<0.01%,K2O含量偏高(3.05%~4.03%),TiO2与CaO含量接近正常水平。砂岩稀土元素总量较高,在144.80×10-6~170.57×10-6之间,LREE/HREE值为9.68~16.49,δEu为1.01~1.31,具弱的正铕异常,无Ce负异常或负异常不明显;砂岩微量元素Ni、V、Cu、Pb、Ba特别是Cr的丰度大大高于上地壳丰度。Sr及成矿元素Zn、Ga低于地壳丰度,V/(V+Ni)与Ce/La值均较高,这些数据说明本区沉积于还原、湿热环境,具有大陆型沉积特征。通过多种相关图解,均反映其物源形成于大陆岛弧和活动大陆边缘带的构造背景。

References

[1]  姜立君;张卫华;高慧;杨瑞东.贵州新元古代陡山沱期碳酸盐岩帽沉积地球化学特征[J].地球学报,2004(02)
[2]  ZHANG Jin;MA Zong-jin;REN Wen-jun.Discussion on the Tectonic Setting of Deposition of the Eocene,Sikouzi Forma-tion in Ningxia Region[J].Geological Review,2006(02)
[3]  ZHANG Kang,The collection of Petroleum geology on the Helan Graben and the Western Margin of the Ordos Basin,呼和浩特:内蒙古人民出版社,1983.
[4]  LIU Ying-jun;CAO Li-ming,Element Geological Chemisrty,北京:科学出版社,1984.
[5]  LIU Gang.The Application of Geochemical Analysis to the Study of Sedimentary Environment of Qianjiang Formation in Qianjiang Depression[J].Acta Geosicientica Sinica,2007(04)
[6]  HATCH J R;LEVENTHAL J S,Relation between Inferred Redox potential of the Depositional Environment and Geo-chemistry of the Upper Pennsylvanian (Missourian) Stark Shale Member of the Dennis Limestone,Wabaunsee County,Kansasm U.S A,Chemical Geology,1992.
[7]  BIAN Zhao-xiang,Ningxia Nanshan System,Geological Knowledge,1954(04).
[8]  GU Qi-chang,Stratigraphy of Ningxia Hui Autonomous Region,武汉:中国地质大学出版社,1996.
[9]  BHATIA M R;CROOK K A W,Trace Element Characteris-tics of Graywackes and Tectonics Setting Discrimination of Sedimentary Basins,Contributions to Mineralogy and Pe-trology,1986.
[10]  BAI S L;BAI Z O;MA X P,Devonian Events and Biostrati-graphy of South China,Chapter3:Ce/La a Ratio as Marker of Paleoredox,北京:北京大学出版社,1994.
[11]  ALBERDI-GENOLET M,Trace Metals and Geochemistry of the Machiques Member(Aptian-Alhian) and La Luna Forma-tion (Cenomanian-Campanian),Venezuela,Chemical Ge-ology,1999.
[12]  张抗,论贺兰裂堑,呼和浩特:内蒙古人民出版社,1983.
[13]  张进;马宗晋;任文军.试论宁夏地区始新统寺口子组沉积的构造背景[J].地质论评,2006(02)
[14]  赵振华,微量元素地球化学原理,北京:科学出版社,1997.
[15]  赵一阳;鄢明才,中国浅海沉积物地球化学,北京:科学出版社,1994.
[16]  吴明清;欧阳自远,铈异常--一个寻迹古海洋氧化还原条件变化的化学示踪剂,科学通报,1992(03).
[17]  卢立伍;方晓思;姬书安;庞其清.宁夏纳缪尔期含鱼地层新知[J].地球学报,2002(04)
[18]  鲁洪波;姜在兴.稀土元素地球化学分析在岩相古地理研究中的应用[J].中国石油大学学报(自然科学版),1999(01)
[19]  LI Tian-bin,The Geochemical Features of the Ordovician Strata in Tianjing and Miboshan Mountains,Ningxia,Jour-nal of Stratigraphy,1999(I).
[20]  JIANG Li-jun;ZHANG Wei-hua;GAO Hui;YANG Rui-dong.Sedimentary Geochemical Characteristics of the Cap Carbon-ate of the Doushantuo Formation in Guizhou Province[J].Acta Geosicientica Sinica,2004(02)
[21]  HERRON M M,Geochemical classification of terrigeous sands and shales from core orr log data,Journal of Sedimentary Petrology,1988.
[22]  顾其昌,宁夏回族自治区岩石地层,武汉:中国地质大学出版社,1996.
[23]  边兆祥,宁夏南山系,地质知识,1954.
[24]  刘英俊;曹励明,元素地球化学,北京:科学出版社,1984.
[25]  刘刚.运用地球化学分析研究潜江凹陷潜江组沉积环境[J].地球学报,2007(04)
[26]  李天斌,宁夏天景山-米钵山奥陶纪地层地球化学特征,地层学杂志,1999(01).
[27]  ZHAO Zhen-hua,Geochemical Theory of Trace element,北京:科学出版社,1997.
[28]  ZHAO Yi-yang;YAN Ming-cai,Geological Chemistry of Sedimentary in Shallow sea of China,北京:科学出版社,1994.
[29]  WU Min-qing;OUYANG Zi-yuan,Ce anomaly--A track Finding of Ancient Ocean Redox Condition in the Chemical Tracer,Chinese Science Bulletin,1992(03).
[30]  LU Li-wu;FANG Xiao-si;JI Shu-an;PANG Qi-qing,A Con-tribution to the Knowledge of the Namurian in Ningxia,Acta Geoscientica Sinica,2002(04).
[31]  LU Hong-bo;HANG Zai-xing.Application of Geochemical analysis of Rare Earth Elements in the Study of Lithofacies Paleogeography[J].Journal of China University of Petroleum,1999(01)

Full-Text

Contact Us

service@oalib.com

QQ:3279437679

WhatsApp +8615387084133