河北汉诺坝玄武岩中橄榄岩包体矿物的含水性研究——微区红外光谱分析
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摘要
对12个来自河北汉诺坝玄武岩的橄榄岩包体中的单斜辉石和斜方辉石进行了详细的微区傅立叶变换红外光谱(Micro-FTIR)分析。结果显示,所有的单斜辉石和斜方辉石颗粒都含有以OH形式存在的结构水。对部分粒径较大的辉石颗粒内部的多点分析表明,结构水含量表现出中心高边缘低的不均一分布。这种不均一分布的特征应该来自于包体上升过程中由于压力降低而引起的H扩散。如果用每个样品多个测定颗粒的中心部位的平均值来代表该样品,12个样品的单斜辉石水含量为48×10-6~152×10-6,斜方辉石水含量20×10-6~55×10-6。根据矿物水含量(假设橄榄石的水含量为2×10-6)和它们的体积分数计算的全岩水含量为11×10-6~48×10-6。结合已经发表的橄榄岩包体数据来看,在岩石圈地幔的物理化学条件下,单斜辉石与斜方辉石之间水的平衡分配系数大约为2.2±0.6;岩石圈中水的分布可能具有纵向和横向上的不均一性。
Anhydrous minerals (olivine, clinopyroxene and orthopyroxene) from 12 peridotite xenoliths hosted by basalts in Hannuoba of Hebei were investigated by micro-Fourier transform infrared spectrometry (FTIR). No distinct OH absorption bands can be found in olivines, whereas all the analyzed clinopyroxene (Cpx) and orthopyroxene (Opx) grains contain structural water in the form of OH. The structural water contents of pyroxenes show inhomogeneous distribution within individual grains characterized by higher contents in the core and lower in the rim. Low water contents at grain rims probably result from hydrogen diffusion after pressure decrease upon rock ascending. The range of the average core water content of multi grains (>10) from the same sample for the twelve Hannuoba peridotites is 48×10 -6 ～152×10 -6 and 20×10 -6 ～55×10 -6 for Cpx and Opx respectively. On the basis of water contents of the minerals and their volume proportions, the water contents of the whole rocks are estimated to be 11×10 -6 ～48×10 -6 . Combined with the available data of peridotite xenoliths worldwide, it is held that, under the physical and chemical conditions of lithospheric mantle, the water partition coefficient between clinopyroxene and orthoproxene should be 2.2±0.6, and the water distribution in lithosphere seems to be heterogeneous both at global and regional scales.
Anhydrous minerals (olivine, clinopyroxene and orthopyroxene) from 12 peridotite xenoliths hosted by basalts in Hannuoba of Hebei were investigated by micro-Fourier transform infrared spectrometry (FTIR). No distinct OH absorption bands can be found in olivines, whereas all the analyzed clinopyroxene (Cpx) and orthopyroxene (Opx) grains contain structural water in the form of OH. The structural water contents of pyroxenes show inhomogeneous distribution within individual grains characterized by higher contents in the core and lower in the rim. Low water contents at grain rims probably result from hydrogen diffusion after pressure decrease upon rock ascending. The range of the average core water content of multi grains (>10) from the same sample for the twelve Hannuoba peridotites is 48×10 -6 ～152×10 -6 and 20×10 -6 ～55×10 -6 for Cpx and Opx respectively. On the basis of water contents of the minerals and their volume proportions, the water contents of the whole rocks are estimated to be 11×10 -6 ～48×10 -6 . Combined with the available data of peridotite xenoliths worldwide, it is held that, under the physical and chemical conditions of lithospheric mantle, the water partition coefficient between clinopyroxene and orthoproxene should be 2.2±0.6, and the water distribution in lithosphere seems to be heterogeneous both at global and regional scales.
引文
Bell D R,Ihinger P Dand Rossman G R.1995.Quantitative analysis of hydroxyl in garnet and pyroxene[J].American Mineralogist,80:465~474.
Bell D Rand Rossman G R.1992.Waterinthe earth’s mantle:the roleof nominally anhydrous minerals[J].Science,255:1391~1397.
Bell D R,Rossman G R and Moore R O.2004.Abundance and parti-tioning of OHin a high-presssure magmatic system megacrysts fromthe Monastery Ki mberlite,south Africa[J].Journal of Petrology,45:1539~1564.
Brey G P and Kohler T.1990.Geothermobarometryinfour-phaselher-zolites:II.Newthermo-barometers and practical assessment of ex-isting thermobarmeters[J].Journal of Petrology,31:1353~1378.
Carpenter WS,Mackwell S and Dyar D.2000.Hydrogen in diopside:Diffusion profiles[J].American Mineralogist,85:480~487.
Chen S H,O’Reilly S Y,Zhou X H,et al.2001.Thermal and petro-logical structure of the lithosphere beneath Hannuoba,Sino-KoreanCraton,China:evidence from xenoliths[J].Lithos,56:267~301.
Fan Qand Hooper P.1990.The Cenozoic basaltic rocks of eastern Chi-na:petrology and chemical compositions[J].Journal of Petrology,32:765~810.
Fan Q C,Sui J L,Liu R X,et al.2000.Petrology and geochemistry ofJinlongdingzi active.volcano-the most recent basaltic explosive vol-cano at Longgang[J].Chinese Journal Geochemistry,19:312~317.
Fan Qicheng,Sui Jianli,Liu Ruoxin,et al.2002.Periods of Quar-ternary volcanic activityin Longgang area,Jilin Province[J].ActaPetrologica Sinica,18(4):495~500(in Chinese with English ab-stract).
Gao S,Kern H,Liu YS,et al.2000.Measured and calculated seismicvelocities and densities for granulites from xenolith occurrences andadjacent exposed lower crustal sections:A comparative study fromthe North China craton[J].Journal of Geophysical Research,105:18965~18976.
Gao S,Rudnick L R,Carlson R W,et al.2002.Re-Os evidencefor re-placement of ancient mantlelithosphere beneaththe North China cra-ton[J].Earth Planetary Science Letter,198:307~322.
Guo Lihe,Lin Xingyuan,Xie Manze,et al.1998.Water in mantlexenoliths hosted by basalts from Hannuoba,Hebei[J].Acta Geolog-ica Sinca,72(2):138~143(in Chinese with English abstract).
Hao Yantao,Xia Qunke,Yang Xiaozhi,et al.2006.Water in mineralsof peridotite xenoliths from Cenozoic basalts in Nushan volcano,SEChina[J].Acta Petrologica Sinca,22(6):1713~1722(in Chinesewith English abstract).
Hercule S and Ingrin J.1999.Hydrogenin diopside:diffusion,kineticsof extraction-incorporation,and solubility[J].American Mineralo-gist,84:1577~1587.
Ingrin J and Skogby H.2000.Hydrogenin nominally anhydrous upper-mantle minerals:concentrationlevels andi mplications[J].EuropeanJournal of Mineralogy,12:543~570.
Kohlstedt D L and Mackwell S J.1998.Diffusion of hydrogen and in- trinsic point defects in olivine[J].Zeitschrift for PhysikalischeChemie,307:147~162.
Leech M L.2001.Arrested orogenic development:eclogitization,de-lamination,and tectonic collapse[J].Earth Planetary Science Let-ter,185:149~159.
Libowitzky E and Rossman G R.1996.Principles of quantitative ab-sorbance measurements in anisotropic crystals[J].Physics andChemistry of Minerals,23(6):319~327.
Liu Y S,Gao S,Jin S Y,et al.2001.Geochemistry of lower crustalxenoliths from Neogene Hannuoba Basalt,North China Craton:I m-plications for petrogenesis and lower crustal composition[J].Gechi mica et Cosmochi mica Acta,65:2589~2604.
Liu YS,Gao S,Yuan HL,et al.2004.U-Pbzircon ages and Nd,Sr,and Pbisotopes of lower crustal xenoliths from North China Craton:insights on evolution of lower continental crust[J].Chemical Geolo-gy,211:87~109.
Michael P J.1995.Regionally distinctive sources of depleted MORB:evidence fromtrace elements and H2O[J].Earth and Planetary Sci-ence Letters,131:301~320.
Paterson MS.1982.The determination of hydroxyl byinfrared-absorp-tionin quartz,silicate-glasses and si milar materials[J].Bulletine deMineralogie,105:20~29.
Perkins G B,Sharp Z D and Selverstone J.2006.Oxygen isotope evi-dence for subduction and rift-related mantle metasomatism beneaththe Colorado Plateau-Rio Grande rift transition[J].ContributionstoMineralogy and Petrology,151:633~650.
Peslier A H,Luhr J Fand Post J.2002.Low water contents on pyrox-enes from spinel-peridotite of the oxidized,sub-arc mantle wedge[J].Earth and Planetary Science Letters,201:69~86.
Regenauer-Lieb Kand Yuen D A.2003.Modeling shear zones in geo-logical and planetary sciences:solid-andfluid-thermal-mechanical ap-proaches[J].Earth-Science Reviews,63:295~349.
Regenauer-Lieb K,Yuen D Aand Branlund J.2001.The Initiation ofSubduction:Criticality by Addition of Water[J]?Science,294:578~580.
Rudnick R L,Gao S,Ling WL,et al.2004.Petrology and geochem-istry of spinel peridotite xenoliths from Hannuoba and Qixia,NorthChina craton[J].Lithos,77:609~637.
Skogby H,Bell D Rand Rossman G R.1990.Hydroxide in pyroxene:Variations in the natural environment[J].Am.Mineral.,75:764~774.
Skogby Hand Rossman G R.1989.OHin pyroxene:an experi mentalstudy of incorporation mechanisms andstability[J].Am.Mineral.,74:1059~1069.
Song Y and Frey F A.1989.Geochemistry of peridotite xenoliths inbasalt from Hannuoba,Eastern China:I mplications for subcontinen-tal mantle heterogeneity[J].Geochi mica et Cosmochi mica Acta,53:97~113.
Stalder Rand Skogby H.2003.Hydrogen diffusion in natural and syn-thetic orthopyroxene[J].Phy.Chem.Mineral.,30:12~19.
Tatsumoto M,Basu A R,Wankang H,et al.1992.Sr,Nd,and Pbisotopes of ultramafic xenoliths in volcanic rocks of Eastern Chinaenriched components EMI and EMII in subcontinental lithosphere[J].Earth and Planetary Science Letters,113:107~128.
Wilde S A,Zhou X,Nemchin AA,et al.2003.Mesozoic crust-mantleinteraction beneath the North China craton:A consequence of thedispersal of Gondwanaland and accretion of Asia[J].Geology,31:817~820.
Xia Qiongxia,Zhi Xiachen,Meng Qing,et al.2004.Thetrace elementand Re-Os isotopic geochemistry of mantle-derived peridotite xeno-lithsfrom Hannuoba:Nature and age of SCLMbeneaththe area[J].Acta Petrologica Sinca,20(5):1215~1224(in Chinese with Eng-lish abstract).
Xia Q K,Chen D G,Guo L H,et al.1999.Structural waterin mantle-derived clinopyroxene megacrysts from Hannuoba:FTIRinvestiga-tions[J].Acta Mineralogica Sinica,29(2):161~165.
Xia Qunke,Chen Daogong,Guo Lihe,et al.2000.Water in peridotitexenoliths from Nushan and Panshishan:FTIR study[J].ScienceGeologica Sincia,35(2):219~225(in Chinese with English ab-stract).
Xia Q K,Dallai L and Deloule E.2004.Oxygen and hydrogen isotopeheterogeneity of clinopyroxene megacrystsfrom Nushan Volcano,SEChina[J].Chemical Geology,209:137~151.
Xu Y G.2002.Evidence for crustal components in the mantle and con-straints on crustal recycling mechanisms:pyroxenite xenoliths fromHannuoba,North China[J].Chemical Geology,182:301~322.
Yang Xiaozhi,Xia Qunke,Sheng Yingming,et al.2005.Structral wa-ter inlower crustal granulite xenoliths from Nushan volcano:Micro-FTIRinvestigations[J].Acta Petrologica Sinica,21(6):1669~1676(in Chinese with English abstract).
Yu H M,Xia Q K,Dallai L,et al.2005.Oxygenisotopic andtrace el-ement compositions of peridotite xenoliths from Nushan volcano,SEChina andi mplications for mantle metasomatism[J].Acta Petrolog-ica Sinica,21(3):829~838.
Zhai Mingguo,Fan Qicheng,Zhang Hongfu,et al.2005.Lower crustprocesses duringthelithospherethinningin eastern China magma un-derplating,replacement and delamination[J].Acta Petrologica Sin-ca,22(1):1509~1526(in Chinese withEnglish abstract).
Zhou X,Sun M,Zhang G,et al.2002.Continental crust and litho-spheric mantle interaction beneath North China:isotopic evidencefrom granulite xenoliths in Hannuoba,Sino-Korean craton[J].Lithos,62:111~124.
樊祺诚,隋建立,刘若新,等.2002.吉林龙岗第四纪火山活动分期[J].岩石学报,18(4):495~500.
郭立鹤,林兴源,谢漫泽,等.1998.汉诺坝玄武岩中幔源包体中的水[J].地质学报,72(2):138~143.
郝艳涛,夏群科,杨晓志,等.2006.安徽女山新生代玄武岩中橄榄岩包体矿物的含水性研究[J].岩石学报,22(6):1713~1722.
夏琼霞,支霞臣,孟庆,等.2004.汉诺坝幔源橄榄岩包体的微量元素和Re-Os同位素地球化学:SCLM的性质和形成时代[J].岩石学报,20:1215~1224.
夏群科,陈道公,郭立鹤,等.1999.汉诺坝幔源单斜辉石巨晶中的结构水:红外光谱观察[J].矿物学报,19(2):161~165.
夏群科,陈道公,郭立鹤,等.2000.女山和盘石山橄榄岩包体中的水:红外光谱研究[J].地质科学,35(2):219~225.
杨晓志,夏群科,盛英明,等.2005.安徽女山下地壳麻粒岩包体中的水:红外光谱分析[J].岩石学报,21(6):1669~1676.
翟明国,樊祺诚,张宏福,等.2005.华北东部岩石圈减薄过程中的下地壳过程:岩浆底侵、置换与拆沉作用[J].岩石学报,21:1509~1526.
Bell D Rand Rossman G R.1992.Waterinthe earth’s mantle:the roleof nominally anhydrous minerals[J].Science,255:1391~1397.
Bell D R,Rossman G R and Moore R O.2004.Abundance and parti-tioning of OHin a high-presssure magmatic system megacrysts fromthe Monastery Ki mberlite,south Africa[J].Journal of Petrology,45:1539~1564.
Brey G P and Kohler T.1990.Geothermobarometryinfour-phaselher-zolites:II.Newthermo-barometers and practical assessment of ex-isting thermobarmeters[J].Journal of Petrology,31:1353~1378.
Carpenter WS,Mackwell S and Dyar D.2000.Hydrogen in diopside:Diffusion profiles[J].American Mineralogist,85:480~487.
Chen S H,O’Reilly S Y,Zhou X H,et al.2001.Thermal and petro-logical structure of the lithosphere beneath Hannuoba,Sino-KoreanCraton,China:evidence from xenoliths[J].Lithos,56:267~301.
Fan Qand Hooper P.1990.The Cenozoic basaltic rocks of eastern Chi-na:petrology and chemical compositions[J].Journal of Petrology,32:765~810.
Fan Q C,Sui J L,Liu R X,et al.2000.Petrology and geochemistry ofJinlongdingzi active.volcano-the most recent basaltic explosive vol-cano at Longgang[J].Chinese Journal Geochemistry,19:312~317.
Fan Qicheng,Sui Jianli,Liu Ruoxin,et al.2002.Periods of Quar-ternary volcanic activityin Longgang area,Jilin Province[J].ActaPetrologica Sinica,18(4):495~500(in Chinese with English ab-stract).
Gao S,Kern H,Liu YS,et al.2000.Measured and calculated seismicvelocities and densities for granulites from xenolith occurrences andadjacent exposed lower crustal sections:A comparative study fromthe North China craton[J].Journal of Geophysical Research,105:18965~18976.
Gao S,Rudnick L R,Carlson R W,et al.2002.Re-Os evidencefor re-placement of ancient mantlelithosphere beneaththe North China cra-ton[J].Earth Planetary Science Letter,198:307~322.
Guo Lihe,Lin Xingyuan,Xie Manze,et al.1998.Water in mantlexenoliths hosted by basalts from Hannuoba,Hebei[J].Acta Geolog-ica Sinca,72(2):138~143(in Chinese with English abstract).
Hao Yantao,Xia Qunke,Yang Xiaozhi,et al.2006.Water in mineralsof peridotite xenoliths from Cenozoic basalts in Nushan volcano,SEChina[J].Acta Petrologica Sinca,22(6):1713~1722(in Chinesewith English abstract).
Hercule S and Ingrin J.1999.Hydrogenin diopside:diffusion,kineticsof extraction-incorporation,and solubility[J].American Mineralo-gist,84:1577~1587.
Ingrin J and Skogby H.2000.Hydrogenin nominally anhydrous upper-mantle minerals:concentrationlevels andi mplications[J].EuropeanJournal of Mineralogy,12:543~570.
Kohlstedt D L and Mackwell S J.1998.Diffusion of hydrogen and in- trinsic point defects in olivine[J].Zeitschrift for PhysikalischeChemie,307:147~162.
Leech M L.2001.Arrested orogenic development:eclogitization,de-lamination,and tectonic collapse[J].Earth Planetary Science Let-ter,185:149~159.
Libowitzky E and Rossman G R.1996.Principles of quantitative ab-sorbance measurements in anisotropic crystals[J].Physics andChemistry of Minerals,23(6):319~327.
Liu Y S,Gao S,Jin S Y,et al.2001.Geochemistry of lower crustalxenoliths from Neogene Hannuoba Basalt,North China Craton:I m-plications for petrogenesis and lower crustal composition[J].Gechi mica et Cosmochi mica Acta,65:2589~2604.
Liu YS,Gao S,Yuan HL,et al.2004.U-Pbzircon ages and Nd,Sr,and Pbisotopes of lower crustal xenoliths from North China Craton:insights on evolution of lower continental crust[J].Chemical Geolo-gy,211:87~109.
Michael P J.1995.Regionally distinctive sources of depleted MORB:evidence fromtrace elements and H2O[J].Earth and Planetary Sci-ence Letters,131:301~320.
Paterson MS.1982.The determination of hydroxyl byinfrared-absorp-tionin quartz,silicate-glasses and si milar materials[J].Bulletine deMineralogie,105:20~29.
Perkins G B,Sharp Z D and Selverstone J.2006.Oxygen isotope evi-dence for subduction and rift-related mantle metasomatism beneaththe Colorado Plateau-Rio Grande rift transition[J].ContributionstoMineralogy and Petrology,151:633~650.
Peslier A H,Luhr J Fand Post J.2002.Low water contents on pyrox-enes from spinel-peridotite of the oxidized,sub-arc mantle wedge[J].Earth and Planetary Science Letters,201:69~86.
Regenauer-Lieb Kand Yuen D A.2003.Modeling shear zones in geo-logical and planetary sciences:solid-andfluid-thermal-mechanical ap-proaches[J].Earth-Science Reviews,63:295~349.
Regenauer-Lieb K,Yuen D Aand Branlund J.2001.The Initiation ofSubduction:Criticality by Addition of Water[J]?Science,294:578~580.
Rudnick R L,Gao S,Ling WL,et al.2004.Petrology and geochem-istry of spinel peridotite xenoliths from Hannuoba and Qixia,NorthChina craton[J].Lithos,77:609~637.
Skogby H,Bell D Rand Rossman G R.1990.Hydroxide in pyroxene:Variations in the natural environment[J].Am.Mineral.,75:764~774.
Skogby Hand Rossman G R.1989.OHin pyroxene:an experi mentalstudy of incorporation mechanisms andstability[J].Am.Mineral.,74:1059~1069.
Song Y and Frey F A.1989.Geochemistry of peridotite xenoliths inbasalt from Hannuoba,Eastern China:I mplications for subcontinen-tal mantle heterogeneity[J].Geochi mica et Cosmochi mica Acta,53:97~113.
Stalder Rand Skogby H.2003.Hydrogen diffusion in natural and syn-thetic orthopyroxene[J].Phy.Chem.Mineral.,30:12~19.
Tatsumoto M,Basu A R,Wankang H,et al.1992.Sr,Nd,and Pbisotopes of ultramafic xenoliths in volcanic rocks of Eastern Chinaenriched components EMI and EMII in subcontinental lithosphere[J].Earth and Planetary Science Letters,113:107~128.
Wilde S A,Zhou X,Nemchin AA,et al.2003.Mesozoic crust-mantleinteraction beneath the North China craton:A consequence of thedispersal of Gondwanaland and accretion of Asia[J].Geology,31:817~820.
Xia Qiongxia,Zhi Xiachen,Meng Qing,et al.2004.Thetrace elementand Re-Os isotopic geochemistry of mantle-derived peridotite xeno-lithsfrom Hannuoba:Nature and age of SCLMbeneaththe area[J].Acta Petrologica Sinca,20(5):1215~1224(in Chinese with Eng-lish abstract).
Xia Q K,Chen D G,Guo L H,et al.1999.Structural waterin mantle-derived clinopyroxene megacrysts from Hannuoba:FTIRinvestiga-tions[J].Acta Mineralogica Sinica,29(2):161~165.
Xia Qunke,Chen Daogong,Guo Lihe,et al.2000.Water in peridotitexenoliths from Nushan and Panshishan:FTIR study[J].ScienceGeologica Sincia,35(2):219~225(in Chinese with English ab-stract).
Xia Q K,Dallai L and Deloule E.2004.Oxygen and hydrogen isotopeheterogeneity of clinopyroxene megacrystsfrom Nushan Volcano,SEChina[J].Chemical Geology,209:137~151.
Xu Y G.2002.Evidence for crustal components in the mantle and con-straints on crustal recycling mechanisms:pyroxenite xenoliths fromHannuoba,North China[J].Chemical Geology,182:301~322.
Yang Xiaozhi,Xia Qunke,Sheng Yingming,et al.2005.Structral wa-ter inlower crustal granulite xenoliths from Nushan volcano:Micro-FTIRinvestigations[J].Acta Petrologica Sinica,21(6):1669~1676(in Chinese with English abstract).
Yu H M,Xia Q K,Dallai L,et al.2005.Oxygenisotopic andtrace el-ement compositions of peridotite xenoliths from Nushan volcano,SEChina andi mplications for mantle metasomatism[J].Acta Petrolog-ica Sinica,21(3):829~838.
Zhai Mingguo,Fan Qicheng,Zhang Hongfu,et al.2005.Lower crustprocesses duringthelithospherethinningin eastern China magma un-derplating,replacement and delamination[J].Acta Petrologica Sin-ca,22(1):1509~1526(in Chinese withEnglish abstract).
Zhou X,Sun M,Zhang G,et al.2002.Continental crust and litho-spheric mantle interaction beneath North China:isotopic evidencefrom granulite xenoliths in Hannuoba,Sino-Korean craton[J].Lithos,62:111~124.
樊祺诚,隋建立,刘若新,等.2002.吉林龙岗第四纪火山活动分期[J].岩石学报,18(4):495~500.
郭立鹤,林兴源,谢漫泽,等.1998.汉诺坝玄武岩中幔源包体中的水[J].地质学报,72(2):138~143.
郝艳涛,夏群科,杨晓志,等.2006.安徽女山新生代玄武岩中橄榄岩包体矿物的含水性研究[J].岩石学报,22(6):1713~1722.
夏琼霞,支霞臣,孟庆,等.2004.汉诺坝幔源橄榄岩包体的微量元素和Re-Os同位素地球化学:SCLM的性质和形成时代[J].岩石学报,20:1215~1224.
夏群科,陈道公,郭立鹤,等.1999.汉诺坝幔源单斜辉石巨晶中的结构水:红外光谱观察[J].矿物学报,19(2):161~165.
夏群科,陈道公,郭立鹤,等.2000.女山和盘石山橄榄岩包体中的水:红外光谱研究[J].地质科学,35(2):219~225.
杨晓志,夏群科,盛英明,等.2005.安徽女山下地壳麻粒岩包体中的水:红外光谱分析[J].岩石学报,21(6):1669~1676.
翟明国,樊祺诚,张宏福,等.2005.华北东部岩石圈减薄过程中的下地壳过程:岩浆底侵、置换与拆沉作用[J].岩石学报,21:1509~1526.
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