Fine Structure and Their Genetic Significance of Clay Minerals from the Permian-Triassic Boundary, Huaxi Area, Guizhou Province
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摘要: 为了揭示贵州花溪区海相P-T界线附近粘土岩的成因及物质来源, 采用X射线衍射(XRD)、扫描电子显微镜(SEM)以及差示扫描量热法(DSC), 对粘土层中粘土矿物的精细结构进行了深入的研究.结果表明, 样品中的粘土矿物共有两种物质来源.样品YN06质地致密, 粘土颗粒具有一定的定向性, 主要粘土矿物成分为伊利石和少量绿泥石.粘土矿物颗粒具有不规则的轮廓及参差不齐的边缘; 样品脱羟基反应温度为590 ℃, 表明样品中的伊利石主要为tv结构, 来源于陆地机械风化作用.其余五件样品主要粘土矿物为伊蒙规则混层和伊利石以及少量蒙脱石、绿泥石, 脱羟基温度均大于600 ℃, 表明样品中的粘土矿物主要以cv结构为主, 含有少量的tv结构, 指示粘土岩主要来源于火山物质的蚀变并伴随部分陆源碎屑物质沉积形成.Abstract: The fine structure and provenance of clays across the Permian-Triassic boundary (PTB) in the Yanlou section were investigated by X-ray diffraction (XRD), scanning electron microscopy (SEM) and differential scanning calorimetry (DSC). The results suggest that the layers have two different provenances. The sample of YN06 exhibits a condensed texture with an oriented arrangement of detrital clay particles and consists mainly of illite and minor chlorite, with irregular outlines or ragged edges. The dehydroxylation temperature occurred at 590 ℃, indicating that clay minerals are composed of trans-vacant (tv) octahedral sheets derived from weathering of detrital illite. Other samples are composed mainly of I-S, illite and minor smectite, chlorite, with dehydroxylation temperature all above 600 ℃, suggesting that clay minerals consist of a mixture of tv and cv sheets and were derived from a mixture of terrigenous and volcanic sources.
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Key words:
- Permian-Triassic Boundary (PTB) /
- clay minerals /
- volcanic rocks /
- fine structure
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图 2 燕楼剖面地层及采样位置描述
Fig. 2. Stratigraphic sequence and sampling position at the Yanlou section, Guiyang, Guizhou Province
图 3 燕楼剖面样品全岩片的X射线粉晶衍射
Q.石英；Pl.斜长石；I/S.伊蒙混层；Ch.绿泥石；I.伊利石
Fig. 3. XRD patterns of the samples from Yanlou Section
图 4 燕楼剖面自然定向片及乙二醇饱和片(G)X射线粉晶衍射图
Q.石英；I/S.伊蒙混层；Ch.绿泥石；I.伊利石；S.蒙脱石
Fig. 4. XRD patterns of clay fractions in air-dried and ethylene glycol-solvatedstates of Yanlou section
图 5 a.扫描电镜下YN04中的伊蒙混层矿物；b.扫描电镜下YN06中的伊利石；c.扫描电镜下YN05中挑选出的微球粒；d、e.扫描电镜下YN05中的六方双锥石英；f.微球粒及六方双锥石英双目镜下形态；g.伊蒙混层矿物的能谱分析结果；h.伊利石能谱分析结果；i、j.微球粒及六方双锥石英能谱分析结果
Fig. 5. a.SEM image of I-S clays in the sample YN04;b.SEM image of illite in the sample YN06;c.SEM images of the spherule in sample YN05;d、e.SEM images of hexagonal dipyramid quart in the sample YN05;f.Image of spherule and hexagonal dipyramid quart under the binocular; g.EDS analysis of I-S clays; h.EDS analysis of illite; i、j.EDS analysis of spherule and hexagonal dipyramid quart
图 6 燕楼剖面样品脱羟基温度曲线
Fig. 6. DSC curves of the samples showing dehydroxylation temperatures of Yanlou section
表 1 样品中粘土矿物相对含量(%)
Table 1. Clay mineral components of clay fractions of the samples (%)
样品编号 伊利石 伊蒙混层 蒙脱石 绿泥石 I/S中S晶层含量 YN06 90 10 YN05 45 55 32 YN04 100 42 YN03 25 60 15 36 YN02 20 60 15 5 41 YN01 10 90 39 
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Becker, L., Poreda, R.J., Hunt, A.G., et al., 2001. Impact Event at the Permian-Triassic Boundary: Evidence from Extraterrestrial Noble Gases in Fullerenes. Science, 291(5508): 1530-1533. doi: 10.1126/science.1057243 Biscaye, P.E., 1965. Mineralogy and Sedimentation of Recent Deep-Sea Clay in the Atlantic Ocean and Adjacent Seas and Oceans. Geological Society of America Bulletin, 76(7): 803-832. doi: 10.1130/0016-7606(1965)762.0.CO;2 Bowring, S.A., Erwin, D.H., Jin, Y.G., et al., 1998. U/Pb Zircon Geochronology and Tempo of the End-Permian Mass Extinction. Science, 280(5366): 1039-1045. doi: 10.1126/science.280.5366.1039 Chamley, H., 1989. Clay Sedimentology. Springer Verlag, Berlin, 623. Cuadros, J., Altaner, S.P., 1998. Characterization of Mixed-Layer Illite-Smectite from Bentonites Using Microscopic, Chemical, and X-Ray Methods; Constraints on the Smectite-to-Illite Transformation Mechanism. American Mineralogist, 83(7-8): 762-774. doi: 10.2138/am-1998-7-808 Deconinck, J.F., Chamley, H., 1995. Diversity of Smectite Origins in Late Cretaceous Sediments: Example of Chalks from Northern France. Clay Minerals, 30(4): 365-379. doi: 10.1180/claymin.1995.030.4.09 Drits, V.A., Lindgreen, H., Salyn, A.L., et al., 1998. Semiquantitative Determination of Trans-Vacant and Cis-Vacant 2∶1 Layers in Illites and Illite-Smectites by Thermal Analysis and X-Ray Diffraction. American Mineralogist, 83(11-12): 1188-1198. Drits, V.A., Zviagina, B.B., 2009. Trans-Vacant and Cis-Vacant 2∶1 Layer Silicates: Structural Features, Identification, and Occurrence. Clays and Clay Minerals, 57(4): 405-415. doi: 10.1346/CCMN.2009.0570401 Hallam, A., Wignall, P.B., 1999. Mass Extinctions and Sea-Level Changes. Earth-Science Reviews, 48(4): 217-250. doi: 10.1016/S0012-8252(99)00055-0 He, J.W., 1985. Discovery of Microspherules from the Permo-Triassic Mixed Fauna Bed No. 1 of Meishan in Changxing, Zhejiang and Its Significance. Journal of Stratigraphy, 9(4): 293-297 (in Chinese with English abstract). http://en.cnki.com.cn/Article_en/CJFDTOTAL-DCXZ198504007.htm Hong, H.L., Zhang, N., Li, Z.H., et al., 2008. Clay Mineralogy across the PT Boundary of the XIAKOU Section, China: Evidence of Clay Provenance and Environment. Clays and Clay Minerals, 56(2): 131-143. doi: 10.1346/CCMN.2008.0560201 Hong, H.L., Xie, S.C., Lai, X.L., 2011. Volcanism in Association with the Prelude to Mass Extinction and Environment Change across the Permian-Triassic Boundary (PTB), Southern China. Clays and Clay Minerals, 59(5): 478-489. doi: 10.1346/CCMN.2011.0590505 Kamo, S.L., Czamanske, G.K., Amelin, Y., et al., 2003. Rapid Eruption of Siberian Flood-Volcanic Rocks and Evidence for Coincidence with the Permian-Triassic Boundary and Mass Extinction at 251 Ma. Earth and Planetary Science Letters, 214(1): 75-91. doi: 10.1016/S0012-821X(03)00347-9 Korte, C., Kozur, H.W., 2010. Carbon-Isotope Stratigraphy across the Permian-Triassic Boundary: A review. Journal of Asian Earth Sciences, 39(4): 215-235. doi: 10.1016/j.jseaes.2010.01.005 Kump, L.R., Pavlov, A., Arthur, M.A., 2005. Massive Release of Hydrogen Sulfide to the Surface Ocean and Atmosphere during Intervals of Oceanic Anoxia. Geology, 33(5): 397-400. doi: 10.1130/G21295.1 Lu, Q., Lei, X.R., Liu, H.F., 1991. Genetic Types and Crystal Chemical Classification of Irregular Illite/Smectite Interstratified Clay Minerals. Acta Mineralogica Sinica, 11(2): 97-104 (in Chinese with English abstract). http://en.cnki.com.cn/Article_en/CJFDTOTAL-KWXB199102000.htm Lu, Q., Lei, X.R., Liu, H.F., 1993. Study of the Stacking Sequences of a Kind of Irregular Mixed-Layer Illite-Smectite (I/S) Clay Mineral. Acta Mineralogica Sinica, 67(2): 123-130 (in Chinese with English abstract). doi: 10.1111/j.1755-6724.1993.mp6004003.x/abstract Mccarty, D.K., Reynolds, J.R.C., 1995. Rotationally Disordered Illite/Smectite in Paleozoic K-bentonites. Clays and Clay Minerals, 43(3): 271-284. doi: 10.1346/CCMN.1995.0430302 Mccarty, D.K., Reynolds, J.R.C., 2001. Three-Dimensional Crystal Structures of Illite-Smectite Minerals in Paleozoic K-Bentonites from the Appalachian Basin. Clays and Clay Minerals, 49(1): 24-35. doi: 10.1346/CCMN.2001.0490102 Moore, D.M., Reynolds, J.R.C., 1989. X-Ray Diffraction and the Identification and Analysis of Clay Minerals. Oxford University Press, New York, 378. Pearson, M.J., Small, J.S., 1988. Illite-Smectite Diagenesis and Palaeotemperatures in Northern North Sea Quaternary to Mesozoic Shale Sequences. Clay Minerals, 23(2): 109-132. doi: 10.1180/claymin.1988.023.2.01 Pearson, M.J., 1990. Clay Mineral Distribution and Provenance in Mesozoic and Tertiary Mudrocks of the Moray Firth and Northern North Sea. Clay Minerals, 25(4): 519-541. doi: 10.1180/claymin.1990.025.4.10 Raup, D.M., 1979. Size of the Permo-Triassic Bottleneck and Its Evolutionary Implications. Science, 206(4415): 217-218. doi: 10.1126/science.206.4415.217 Renne, P.R., Black, M.T., Zichao, Z., et al., 1995. Synchrony and Causal Relations between Permian-Triassic Boundary Crises and Siberian Flood Volcanism. Science, 269(5229): 1413-1416. doi: 10.1126/science.269.5229.1413 Retallack, G.J., 2001. A 300-Million-Year Record of Atmospheric Carbon Dioxide from Fossil Plant Cuticles. Nature, 411(6835): 287-290. doi: 10.1038/35077041 Reynolds, R.C., Hower, J., 1970. The Nature of Interlayering in Mixed-Layer Illite-Mont-Morillonites. Clays and Clay Mineral, 18: 25-36. doi: 10.1346/CCMN.1970.0180104 Robert, C., Kennett, J.P., 1994. Antarctic Subtropical Humid Episode at the Paleocene-Eocene Boundary: Clay-Mineral Evidence. Geology, 22(3): 211-214. doi: 10.1130/0091-7613(1994)022<0211:ASHEAT>2.3.CO;2 Sepkoski, J.J., 1989. Periodicity in Extinction and the Problem of Catastrophism in the History of Life. Journal of the Geological Society, 146(1): 7-19. doi: 10.1144/gsjgs.146.1.0007 Sheldon, N.D., 2006. Abrupt Chemical Weathering Increase across the Permian-Triassic Boundary. Palaeogeography, Palaeoclimatology, Palaeoecology, 231(3): 315-321. doi: 10.1016/j.palaeo.2005.09.001 Singer, A., 1984. The Paleoclimatic Interpretation of Clay Minerals in Sediments—A Review. Earth-Science Reviews, 21(4): 251-293. doi: 10.1016/0012-8252(84)90055-2 Tsipursky, S.I., Drits, V.A., 1984. The Distribution of Octahedral Cations in the 2∶1 Layers of Dioctahedral Smectites Studied by Oblique-Texture Electron Diffraction. Clay Minerals, 19(2): 177-193. doi: 10.1180/claymin.1984.019.2.05 Visscher, H., Brinkhuis, H., Dilcher, D.L., et al., 1996. The Terminal Paleozoic Fungal Event: Evidence of Terrestrial Ecosystem Destabilization and Collapse. Proceedings of the National Academy of Sciences of the United States of America, 93(5): 2155-2158. doi: 10.1073/pnas.93.5.2155 Ward, P.D., Montgomery, D.R., Smith, R., 2000. Altered River Morphology in South Africa Related to the Permian-Triassic Extinction. Science, 289(5485): 1740-1743. doi: 10.1126/science.289.5485.1740 Wignall, P.B., Morante, R., Newton, R., 1998. The Permo-Triassic Transition in Spitsbergen: δ13Corg Chemostratigraphy, Fe and S Geochemistry, Facies, Fauna and Trace Fossils. Geological Magazine, 135(1): 47-62. doi: 10.1017/S0016756897008121 Wignall, P.B., 2001. Large Igneous Provinces and Mass Extinctions. Earth-Science Reviews, 53(1-2): 1-33. doi: 10.1016/S0012-8252(00)00037-4 Xie, S.L., Pancost, R.D., Huang, J., et al., 2007. Changes in the Global Carbon Cycle Occurred as Two Episodes during the Permian-Triassic Crisis. Geology, 35(12): 1083-1086. doi: 10.1130/G24224A.1 Yang, Z.Y., Wu, S.B., Yin, H.F., et al., 1991. Geological Events of Permo-Triassic Transitional Period in South China. Geological Press, Beijing, 190 (in Chinese). Ylagan, R.F., Altaner, S.P., Pozzuoli, A., 2000. Reaction Mechanisms of Smectite Illitization Associated with Hydrothermal Alteration from Ponza Island, Italy. Clays and Clay Minerals, 48(6): 610-631. doi: 10.1346/CCMN.2000.0480603 Yu, K.P., Han, G.M., Yang, F.L., et al., 2005. Study on Clay Minerals of P/T Boundary in Meishan Section, Changxin, Zhejiang Province. Acta Sedimentologica Sinica, 23: 108-112 (in Chinese with English abstract). http://en.cnki.com.cn/Article_en/CJFDTOTAL-CJXB20050100D.htm Zhang, S.X., Yu, J.X., Yang, F.Q., et al., 2004. Study on Clayrocks of the Neritic, Littoral and Marine-Terrigenous Facies across the Permian-Triassic Boundary in Eastern Yunnan and Western Guizhou, South China. Journal of Mineralogy and Petrology, 24(4): 81-86 (in Chinese with English abstract). http://en.cnki.com.cn/Article_en/CJFDTOTAL-KWYS200404015.htm Zhang, S.X., Feng, Q.L., Gu, S.Z., et al., 2006. Clay Stone around Deep Water Permian-Triassic Boundary from Guizhou and Guangxi Region. Geological Science and Technology Information, 25(1): 9-13 (in Chinese with English abstract). http://en.cnki.com.cn/Article_en/CJFDTOTAL-DZKQ200601001.htm Zhang, S.X., Zhao, L.S., Tong, J.N., et al., 2007. Study on the Claystone near the Permian-Triassic Boundary from the Daxiakou Section, Xingshan, HuBei Province. Journal of Mineralogy and Petrology, 27(3): 94-100 (in Chinese with English abstract). http://www.researchgate.net/publication/293273741_Study_on_the_claystone_near_the_Permian-Triassic_boundary_from_the_Daxiakou_Section_Xingshan_Hubei_Province Zhou, Y.Q., Chai, Z.F., Ma, J.G., et al., 1988. Study on Iron Ball in Claystone of P/T Boundary in Shansi Section, Guangyuan, Sichuan Province. Chinese Science Bulletin, 33(5): 397-398 (in Chinese with English abstract). Zhou, Y.Q., 2005. The Study on the P/T Boundary Events. Oil University Press, Shandong, 256 (in Chinese). 何锦文, 1985. 浙江长兴煤山二叠-三叠系混生层1中微球粒的发现及其意义. 地层学杂志, 9(4): 293-297. https://www.cnki.com.cn/Article/CJFDTOTAL-DCXZ198504007.htm 陆琦, 雷新荣, 刘惠芳, 1991. 不规则伊/蒙混层粘土矿物成因类型及晶体化学分类. 矿物学报, 11(2): 97-105. doi: 10.3321/j.issn:1000-4734.1991.02.001 陆琦, 雷新荣, 1993. 一种不规则伊/蒙混层粘土矿物堆垛序列的研究: 兼论具二维晶格一维准晶格的矿物的存在. 地质学报, 67(002): 123-130. https://www.cnki.com.cn/Article/CJFDTOTAL-DZXE199302002.htm 杨遵仪, 吴顺宝, 殷鸿福, 等, 1991. 华南二叠-三叠纪过渡期地质事件. 北京: 地质出版社, pp: 190. 于开平, 韩广民, 杨风丽, 等, 2005. 浙江长兴煤山剖面P/T界线附近粘土矿物研究. 沉积学报, 23(1): 108-112. doi: 10.3969/j.issn.1000-0550.2005.01.014 张素新, 喻建新, 杨逢清, 等, 2004. 黔西滇东地区浅海, 滨海及海陆交互相二叠系-三叠系界线附近粘土岩研究. 矿物岩石, 24(4): 81-86. doi: 10.3969/j.issn.1001-6872.2004.04.015 张素新, 冯庆来, 顾松竹, 等, 2006. 黔桂地区深水相二叠系-三叠系界线附近黏土岩研究. 地质科技情报, 25(1): 9-13. doi: 10.3969/j.issn.1000-7849.2006.01.002 张素新, 赵来时, 童金南, 等, 2007. 湖北兴山大峡口浅海相二叠系-三叠系界线附近粘土岩研究. 矿物岩石, 27(3): 94-100. https://www.cnki.com.cn/Article/CJFDTOTAL-KWYS200703015.htm 周瑶琪, 柴之芳, 马建国, 等, 1988. 四川广元上寺P/T界线粘土中铁质小球的初步研究. 科学通报, 33(5): 397-398. https://www.cnki.com.cn/Article/CJFDTOTAL-KXTB198805023.htm 周瑶琪, 2005. 二叠三叠系界线事件研究. 山东: 石油大学出版社, 256. -
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