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...

皖北新元古界望山组灰岩微量元素地球化学特征*

DOI: 10.7605/gdlxb.2012.06.012, PP. 813-820

Keywords: 望山组,灰岩,微量元素,沉积环境,皖北

Full-Text   Cite this paper   Add to My Lib

Abstract:

为研究皖北新元古界望山组灰岩地球化学特征及地质背景,对该地区灰岩进行了系统的岩石学和微量元素地球化学测试。研究结果表明:望山组灰岩中,元素U、Pb、Sr、Sm富集,Nb、Pr、Zr、Hf明显亏损;稀土总量偏低(6.68~42.78μg/g),轻稀土略亏损,NdSN/YbSN值在0.65~0.91之间变化,轻重稀土分异微弱,灰岩样品均具有程度不同的La和Y正异常。U、Th、Ce等元素特征反映了研究区望山组形成于缺氧的水体环境,Sr/Ba、Sr/Cu值反映了望山组灰岩形成于盐度较大的海水环境和干旱的气候条件;La-Th-Sc和Th-Sc-Zr/10图解指示望山组灰岩可能形成于大陆岛弧环境。

References

[1]  孙林华,桂和荣,贺振宇,等.2010b.皖北新元古代硅质灰岩的发现及其地质意义[J].合肥工业大学学报(自然科学版),33(1):110-116.
[2]  田正隆,戴英,龙爱民,等.2005.南沙群岛海域沉积物稀土元素地球化学研究[J].热带海洋学报,24(1):8-14.
[3]  汤书好,陈衍景,武广,等.2009.辽东辽河群大石桥组碳酸盐岩稀土元素地球化学及其对Lomagundi事件的指示[J].岩石学报,25(11):3075-3093.
[4]  伊海生,林金辉,赵西西,等.2008.西藏高原沱沱河盆地渐新世—中新世湖相碳酸盐岩稀土元素地球化学特征与正铕异常成因初探[J].沉积学报,26(1):1-10.
[5]  Bau M,Koschinsky A,Dulski P, et al.1996.Comparison of partitioning behaviors of yttrium,rare earth elements,and titanium between hydrogenetic marine ferromanganese crusts and seawater[J].Geochimica et Cosmochimica Acta,60: 1709-1725.
[6]  Bellanca A,Masetti D,Neri R.1997.Rare earth elements in limestone/marlstone couplets from the Albian-Cenomanian Cismon section(Venetian region,northern Italy): Assessing REE sensitivity to environmental changes[J].Chemical Geology,141: 141-152.
[7]  安徽省地质矿产局.1987.安徽省区域地质志[M].北京: 地质出版社,517-518.
[8]  陈松,桂和荣,孙林华,等.2011.皖北九顶山组灰岩稀土元素地球化学特征及对古海水的制约[J].中国地质,38(3):664-672.
[9]  常华进,储雪蕾,冯连君,等.2009.氧化还原敏感微量元素对古海洋沉积环境的指示意义[J].地质论评,55(1):91-99.
[10]  旷红伟,金广春,刘燕学,等.2004.从地球化学角度看微亮晶臼齿碳酸盐岩形成的环境条件——以吉辽地区新元古代微亮晶碳酸盐岩为例[J].天然气地球科学,15(2):150-155.
[11]  李双应,岳书仓,杨建,等.2003.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,38(2):241-253.
[12]  刘士林,刘蕴华,林舸,等.2006.渤海湾盆地南堡凹陷新近系泥岩稀土元素地球化学特征及其地质意义[J].现代地质,20(3):449-456.
[13]  刘燕学,旷红伟,孟祥化,等.2005.吉辽徐淮地区新元古代地层对比格架[J].地层学杂志,29(4):387-396.
[14]  刘颖,刘海臣,李献华.1996.用ICP-MS准确测定岩石样品中的40余种微量元素[J].地球化学,25(6): 552-558.
[15]  柳永清,高林志,刘燕学,等.2005.徐淮地区新元古代初期镁铁质岩浆事件的锆石U-Pb定年[J].科学通报,50(22):2514-2521.
[16]  倪善芹,侯泉林,王安建,等.2010.碳酸盐岩中锶元素地球化学特征及其指示意义[J].地质学报,84(10):1510-1516.
[17]  潘国强,孔庆友,吴俊奇,等.2000.徐宿地区新元古代辉绿岩床的地球化学特征[J].高校地质学报,6(1):53-63.
[18]  钱迈平,袁训来,历建华,等. 2001.淮北地区寒武系/新元古界界线讨论[J].地层学杂志,25(2):135-139.
[19]  乔秀夫,高林志.1999.华北中新元古代及早古生代地震灾变事件及与Rodinia的关系[J].科学通报,44(16):1753-1757.
[20]  孙林华,桂和荣.2011.皖北地区新元古代构造背景的转换:来自碎屑岩地球化学的证据[J].地球学报,32(5):523-532.
[21]  孙林华,桂和荣,陈松.2010a.皖北新元古代贾园组混积岩物源和构造背景的地球化学示踪[J].地球学报,31(6):833-842.
[22]  Calvert S E,Pedersen T F.1993.Geochemistry of recent oxic and anoxic sediments:Implications for the geological record[J].Marine Geology,113:67-88.
[23]  Challands T J,Armstrong H A,Maloney D P, et al.2009.Organic-carbon deposition and coastal upwlling at mid-latitude during the Upper Ordovician(Late Katian):A case study from the welsh Basin,UK[J].Palaeogeography,Palaeoclimatology,Palaeoecology,273(3/4):395-410.
[24]  De Baar H J W,German C R,Elderfield H, et al.1988.Rare earth element distributions in anoxic waters of the Cariaco Trench[J].Geochimica et Cosmochimica Acta,52:1203-1219.
[25]  Gromet L P,Dymek R F,Haskin L A, et al.1984.The “North American Shale Composite”: Its compilation,major and trace element characteristics[J].Geochimica et Cosmochimica Acta,48: 2469-2482.
[26]  Kimura H,Watanabe Y S.2001.Oceanic anoxic at the Precambrian-Cambrian boundary[J].Geology,29(11):995-998.
[27]  Nothdurft L D,Webb G E,Kamber B S.2004.Rare earth element geochemistry of Late Devonian reefal carbonates,Canning Basin,Western Australia: Confirmation of a seawater REE proxy in ancient limestones[J].Geochimica et Cosmochimica Acta,68:263-283.
[28]  Pattan J N,Pearce N J G.2009.Bottom water oxygenation history in southeastern Arabian Sea during the past 140ka:Results from redox-sensitive elements[J].Palaeogeography,Palaeoclimatology,Palaeoecology,280(3/4):396-405.
[29]  Piper D Z.1994.Seawater as the source of minor elements in black shales,phosphorites,and other sedimentary rocks[J].Chemical Geology,114(1/2):95-114.
[30]  Nagarajan R, Madhavaraju J, Armstrong-Altrin J S,et al.2011.Geochemistry of Neoproterozoic limestones of the Shahabad Formation,Bhima Basin,Karnataka,southern India[J].Geosciences Journal,15(1):9-25.
[31]  Sun L H,Gui H R,Chen S,et al.2011.Geochemical characteristics and geological significance of the Neoproterozoic carbonates from northern Anhui Province,China[J].Chinese Journal of Geochemistry,30:40-50.
[32]  Tanaka K,Miura N,Asahar Y, et al. 2003.Rare earth element and strontium isotopic study of seamount-type limestone in Mesozoic accretionary complex of Southern Chichibu Terrane,central Japan: Implication for incorporation process of seawater REE into limestones[J].Geochemical Journal,37: 163-180.
[33]  Taylor S R,McLennan S M.1985.The Continental Crust: Its Composition and Evolution[M].Oxford: Blackwell,312.
[34]  Vorlicek T P,Helz G R.2002.Catalysis by mineral surfaces: Implication for Mo geochemistry in anoxic environments[J].Geochimica et Cosmochimica Acta,66(21):3679-3692.

Full-Text

Contact Us

service@oalib.com

QQ:3279437679

WhatsApp +8615387084133