广西来宾二叠系栖霞组黏土矿物和地球化学特征初步研究及地质意义Preliminary Mineralogical and Geochemical Analysis on the Chihsia Formation of Tieqiao Section,Laibin,Guangxi and Their Geological Implications
Bouchikhi Hadjira;王夏;马仲武;伍明;颜佳新;
摘要(Abstract):
研究了广西来宾铁桥剖面栖霞组的黏土矿物组合和地球化学特征的纵向变化特征。黏土矿物分析结果表明,栖霞组上部和下部地层中,黏土矿物含量较高,以伊利石、绿泥石为主,含少量的高岭石和蒙脱石;中部地层中黏土矿物含量较少。在电子显微镜下,有些黏土矿物,如伊利石,发育在草莓状黄铁矿晶体之间,形成于早期成岩作用阶段。整体上黏土矿物成因与陆源碎屑物质输入有关。配套的地球化学分析表明,Al、Fe和Ti质量分数等反映陆源物质的指标,在栖霞组下部和上部质量分数较高,中部明显较低。上述黏土矿物分析和地球化学测试结果意味着该地区二叠纪栖霞期呈现一个明显的陆源碎屑物质输入旋回变化,早期和晚期陆源物质供应较明显,而中期较贫乏,可为该区进一步古地理研究提供重要参考。
关键词(KeyWords): 栖霞组;黏土矿物;铁桥剖面;陆源碎屑
基金项目(Foundation): 国家自然科学基金项目(40472062)
作者(Author): Bouchikhi Hadjira;王夏;马仲武;伍明;颜佳新;
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DOI:
参考文献(References):
- [1]王鸿桢.中国古地理图集[M].北京:地图出版社,1985.
- [2]冯增昭,杨玉卿,金振奎,等.中国南方二叠纪岩相古地理[M].东营:石油大学出版社,1997.
- [3]刘宝珺,许效松,地质矿产部成都地质矿产研究所.中国南方岩相古地理图集[M].北京:科学出版社,1994.
- [4]王立亭.中国南方二叠纪岩相古地理与成矿作用[M].北京:地质出版社,1994.
- [5]Yan J X,Carlson E H.Nodular celestite in the Chihsia For-mation(Middle Permian)of South China[J].Sedimentology,2003,50(2):265-278.
- [6]Yan J X,Munnecke A,Steuber T,et al.Marine sepiolite inMiddle Permian carbonates of South China:Implications forsecular variation of Phanerozoic seawater chemistry[Z].SEPM,2005:75,328-338.
- [7]沙庆安,吴望始,傅家谟.黔桂地区二叠系综合研究:兼论含油气性[M].北京:科学出版社,1990.
- [8]Chamley H.Geodynamic control on Messinian clay sedimenta-tion in the Central Mediterranean Sea[J].Geo-Marine Let-ters,1989,9(3):179-184.
- [9]Biscaye P E.Mineralogy and sedimentation of recent deep-seaclay in the Atlantic Ocean and adjacent seas and oceans[J].Bulletin of the Geological Society of America,1965,76(7):803-831.
- [10]Ehrmann W U,Melles M,Kuhn G,et al.Significance of claymineral assemblages in the Antarctic Ocean[J].Marine Geolo-gy,1992,107:27.
- [11]Weaver C E.Clays,muds,and shales[M].Amsterdam:Elsevier,1989:819.
- [12]Wilson M J.The origin and formation of clay minerals in soils:past,Present and future perspectives[J].Clay Minerals,1999,34(1):7-25.
- [13]Liu Deyi.Sedimentary sepiolite of the Early Permian period inSouth China[J].Clay Minerals,1985,20(4):529-535.
- [14]Hardy R,Tucker M.X-ray powder diffraction of sediments[M]∥Tucker M E.Techniques in Sedimentology,BlackwellScientific Publications.Oxford:Blackwell,1988:191-228.
- [15]Lazar O R.The influence of sedimentary processes on elementdistribution in the devonian new albany shale of the illionis Ba-sin[C].Seattle:Geological Society of America Abstract withPrograms,2003:83.
- [16]Perry C T,Taylor K G.Inhibition of dissolution within shal-low water carbonate sediments:impacts of terrigenous sedi-ment input on syn-depositional carbonate diagenesis[J].Sedi-mentology,2006,53(3):495-513.
- [17]龚一鸣,徐冉,谢树成,等.遗迹化石Zoophycos中的微生物和分子化石[J].中国科学:D辑,2007,37(6):713-719.