ANALYSIS OF ORGANIC COMPONENTS AND ITS EFFECT ON THE FRICTIONAL PROPERTIES OF PINGXI BLACK GOUGE IN YINGXIU-BEICHUAN FAULT OF LONGMENSHAN FAULT ZONE

doi:10.3969/j.issn.0253-4967.2014.03.026

Abstract

Abstract:

Through a series of analysis on the black gouge at Pingxi in Yingxiu-Beichuan Fault, we found about 9wt.%organic matter of kerogen type preserved in the black gouge. The gas chromatography mass spectrometry (GC-MS) was applied to the organic matter and five major alkane compounds were identified, namely, n-alkanes (C₁₄-C₂₁), acyclic isoprenoids(pristane and phytane), sterane, terpane and n-alkylcyclohexanes (C₁₀-C₂₁). Based on preliminary analysis on the organic compounds, we conclude that the organic matter in the black gouge should have deposited in a sea facies or in a saline lacustrine reducing environment, with features of long-time storage and high maturity degree. Through contrast experiments between original gouge samples and organic-removed gouge samples, we found that organic matter in the Pingxi black gouge can significantly weaken fault frictional strength and increase its sliding stability.

Key words: Pingxi black gouge of Longmenshan Fault zone, frictional properties, organic matter, kerogen, alkane compounds

摘要：

通过对龙门山映秀-北川断裂平溪黑色断层泥一系列的分析测试，发现黑色断层泥中含有约9wt%的有机质组分，并且属于干酪根类型。通过对有机质的气相色谱质谱分析得到，其中主要的烷烃化合物成分为正构烷烃（C₁₄-C₂₁）、无环异戊二烯烷烃（姥鲛烷和植烷）、甾烷、萜烷和n烷基环已烷（C₁₀-C₂₁）。对有机化合物的初步分析表明，有机质形成于海相或咸水湖泊相的还原环境，并且赋存时间长，有机质成熟度高。通过对比实验发现，黑色断层泥中有机质的出现能够显著地弱化断层的摩擦强度以及提高断层摩擦滑动的稳定性。

关键词: 龙门山断裂带, 黑色断层泥, 摩擦特性, 有机质, 干酪根, 烷烃类化合物

CLC Number:

P315.2

ZHANG Lei, HE Chang-rong. ANALYSIS OF ORGANIC COMPONENTS AND ITS EFFECT ON THE FRICTIONAL PROPERTIES OF PINGXI BLACK GOUGE IN YINGXIU-BEICHUAN FAULT OF LONGMENSHAN FAULT ZONE[J]. SEISMOLOGY AND GEOLOGY, 2014, 36(3): 896-906.

张雷, 何昌荣. 龙门山映秀-北川断裂平溪黑色断层泥中有机质成分分析及对断层摩擦滑动性质的影响[J]. 地震地质, 2014, 36(3): 896-906.

References

陈义才, 沈忠民, 罗小平. 2007. 石油与天然气有机地球化学
[M]. 北京: 科学出版社.
CHEN Yi-cai, SHEN Zhong-min, LUO Xiao-ping. 2007. Organic Geochemistry of Oil and Natural Gas
[M]. Science Press, Beijing(in Chinese).
傅家谟, 贾蓉芬. 1989. 碳酸盐岩有机地球化学
[M]. 北京: 科学出版社.
FU Jia-mo, JIA Rong-fen. 1989. Organic Geochemistry of Carbonate Rocks
[M]. Science Press, Beijing(in Chinese).
黄第藩, 李晋超, 张大江, 等. 1989. 柴达木盆地第三系原油的熟化序列及其在石油资源预测中的重要意义
[J]. 石油学报, 10(3): 1-11.
HUANG Di-fan, LI Jin-chao, ZHAO Da-jiang, et al. 1989. The maturation series of Tertiary crude oil from Qaidam Basin and its significance in forecasting petroleum resources
[J]. Acta Petrolei Sinica, 10(3): 1-11(in Chinese).
李爱民, 冉炜, 代静玉. 2005. 天然有机质与矿物间的吸附及其环境效应的研究进展
[J]. 岩石矿物学杂志, 24(6): 671-680.
LI Ai-min, RAN Wei, DAI Jing-yu. 2005. Advances in the study of adsorption of natural organic material on minerals and its environmental effects
[J]. Acta Petrologica et Mineralogica, 24(6): 671-680(in Chinese).
李小壮, 吴盛莲. 1960. 四川省平武县平溪锰矿矿石类型、成矿规律及找矿标志的初步研究
[R]. 四川省绵阳专区地质局地质大队. 档号: 22879.
LI Xiao-zhuang, WU Sheng-lian. 1960. Preliminary study of the manganese ore type, deposit process and ore-prospecting criteria in Pingxi, Sichuang Province
[R]. Geology Bureau of Mianyang Sichuan, FN: 22879(in Chinese).
王萍, 付碧宏, 张斌, 等. 2009. 汶川8.0级地震地表破裂带与岩性关系
[J]. 地球物理学报, 52(1): 131-139.
WANG Ping, FU Bi-hong, ZHANG Bin, et al. 2009. Relationships between surface ruptures and lithologic charac￣teristics of the Wenchuan Ms8.0 earthquake
[J]. Chinese J Geophys, 52(1): 131-139(in Chinese).
徐锡伟, 闻学泽, 叶建青, 等. 2008. 汶川M_S8.0地震地表破裂带及其发震构造
[J]. 地震地质, 30(3): 597-629.
XU Xi-wei, WEN Xue-ze, YE Jian-qing, et al. 2008. The M_S8.0 Wenchuan earthquake surface ruptures and its seismogenic structure
[J]. Seismology and Geology, 30(3): 597-629(in Chinese).
Bergamaschi B A, Tsamakis E, Keil R G, et al. 1997. The effect of grain size and surface area on organic matter, lignin and carbohydrate concentration, and molecular compositions in Peru Margin sediments
[J]. Geochimica et Cosmochimica Acta, 61: 1247-1260.
Brooks J. 1981. Organic Maturation Studies and Fossil Fuel Exploration
[M]. London: Academic Press.
Chenu C, Plante A F. 2006. Clay-sized organo-mineral complexes in a cultivation chronosequence: Revisiting the concept of the 'primary organo-mineral complex’
[J]. European Journal of Soil Science, 57: 596-607.
Crawford B, Faulkner D, Rutter E. 2008. Strength, porosity, and permeability development during hydrostatic and shear loading of synthetic quartz-clay fault gouge
[J]. J Geophys Res, 113: B03207.
De'an W E. 1974. Determination of carbonate and organic matter in calcareous sediments and sedimentary rocks by loss on ignition: Comparison with other methods
[J]. Journal of Sedimentary Research, 44: 242-248.
Dieterich J H. 1992. Earthquake nucleation on faults with rate- and state-dependent strength
[J]. Tectonophysics, 211: 115-134.
Dong Ji-zhou, Vorkink W P, Lee M L. 1993. Origin of long-chain alkylcyclohexanes and alkylbenzenes in a coal-bed wax
[J]. Geochimica et Cosmochimica Acta, 57: 837-849.
Hedges J I, Keil R G. 1995. Sedimentary organic matter preservation: An assessment and speculative synthesis
[J]. Marine Chemistry, 49: 81-115.
Keil R G, Tsamakis E, Fuh C B, et al. 1994. Mineralogical and textural controls on the organic composition of coastal marine sediments: Hydrodynamic separation using Splitt-fractionation
[J]. Geochimica et Cosmochimica Acta, 58: 879-893.
Kwan W P, Voelker B M. 2002. Decomposition of hydrogen peroxide and organic compounds in the presence of dissolved iron and ferrihydrite
[J]. Environmental Science &Technology, 36: 1467-1476.
Kwan W P, Voelker B M. 2003. Rates of hydroxyl radical generation and organic compound oxidation in mineral-catalyzed Fenton-like systems
[J]. Environmental Science &Technology, 37: 1150-1158.
Li C Y, Wei Z Y, Ye J Q, et al. 2010. Amounts and styles of coseismic deformation along the northern segment of surface rupture of the 2008 Wenchuan M_W7.9 earthquake, China
[J]. Tectonophysics, 491: 35-58.
Mayer L M. 1999. Extent of coverage of mineral surfaces by organic matter in marine sediments
[J]. Geochimica et Cosmochimica Acta, 63: 207-215.
Polissar P J, Savage H M, Brodsky E E. 2011. Extractable organic material in fault zones as a tool to investigate frictional stress
[J]. Earth and Planetary Science Letters, 311: 439-447.
Takahashi M, Mizoguchi K, Kitamura K, et al. 2007. Effects of clay content on the frictional strength and fluid transport property of faults
[J]. J Geophys Res, 112: B08206.
Tembe S, Lockner D A, Wong T F. 2010. Effect of clay content and mineralogy on frictional sliding behavior of simulated gouges: Binary and ternary mixtures of quartz, illite, and montmorillonite
[J]. J Geophys Res, 115: B03416.
Tse S T, Rice J R. 1986. Crustal earthquake instability in relation to the depth variation of frcitonal sliding properties
[J]. Journal of Geophysical Research, 91(B9): 9452-9472.
Zhang Lei, He Chang-rong. 2013. Frictional properties of natural gouges from Longmenshan Fault zone ruptured during the Wenchuan M_W7.9 earthquake
[J]. Tectonophysics, 594: 149-164. doi: 10.1016/j.tecto. 2013.03.030.

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