庐-枞金属矿集区深地震反射剖面解释结果——揭露地壳精细结构,追踪成矿深部过程
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摘要
深地震反射剖面揭示了庐枞矿集区全地壳的精细结构,在研究火山岩盆地的深部构造、探讨成矿深部过程等方面取得了新认识。从长江至大别山下,Moho由30km左右加深至33km左右,罗河矿下方Moho错断大约3km。庐枞火山岩盆地是一个沿着罗河断裂向东发育的"耳状"非对称盆地,并不存在另外一半隐伏在红层之下的盆地。罗河铁矿对应Moho错断处,处在构造的转换带上。罗河断裂之下存在近于透明的弱反射区域,可能是地幔流体和岩浆上涌、喷发的通道。郯庐断裂、罗河-缺口断裂、长江断裂是庐枞地区的三个重要断裂。郯庐断裂带为不对称花束状构造,近于直立,切穿地壳。小岭矿与龙桥矿可能产出在一个隆起的火成岩体的两翼。
Deep seismic reflection profiles discovered the fine crustal structure of Luzong deposit area,and we obtained new discovery on studying the deep structure of Luzong volcanic basin and tracing deep process of the mineralization.From Yangtze River to Dabie Mountain,Moho goes deeper from about 30km to 33km with 3km offset beneath the Luohe deposit.Luzong volcanic basin is an "ear-like" asymmetric basin of eastward development along the Luohe fault,there is no other half basin buried under the red layer.Luohe ore is corresponding to the offset of Moho and the transition belt of structure.The weak reflection zone in the lower crust of the Luohe may be the surging and eruption channel of magma and mantle fluid.Tanlu fault,Luohe-quekou fault and Changjiang fault are three important faults in the Luzong area.Tanlu behaves a dissymmetrical flower structure,and cut through crust nearly vertically.Xiaoling and Longqiao ores probably located in two flanks of volcanic rock uplift.
Deep seismic reflection profiles discovered the fine crustal structure of Luzong deposit area,and we obtained new discovery on studying the deep structure of Luzong volcanic basin and tracing deep process of the mineralization.From Yangtze River to Dabie Mountain,Moho goes deeper from about 30km to 33km with 3km offset beneath the Luohe deposit.Luzong volcanic basin is an "ear-like" asymmetric basin of eastward development along the Luohe fault,there is no other half basin buried under the red layer.Luohe ore is corresponding to the offset of Moho and the transition belt of structure.The weak reflection zone in the lower crust of the Luohe may be the surging and eruption channel of magma and mantle fluid.Tanlu fault,Luohe-quekou fault and Changjiang fault are three important faults in the Luzong area.Tanlu behaves a dissymmetrical flower structure,and cut through crust nearly vertically.Xiaoling and Longqiao ores probably located in two flanks of volcanic rock uplift.
引文
[1]李廷栋等.2002.横过主要地质单元,实施岩石圈探测,查明地壳细结构,揭露成矿成藏过程及灾害发生背景——关于在地质调查中设立中国大陆探测计划的建议
Brown LD.1991.A new map of crustal“terranes”in the United Statesfrom COCORP deep seismic reflection profiling.Geophy.J.Int.,105:3-13
Brown LD,Zhao WJ,Nelson KD,Hauck M,Alsdorf D,Ross A,CoganM,Liu XW and Che JK.1996.Bright spots,structure andmagmatism in southern Tibet from INDEPT seismic reflectionprofiling.Science,274:1688-1690
Clowes RM,Hammer PTC,Fernandez-ViejoG and Welford JK.2005.Lithospheric structure in northwestern Canada from Lithoprobeseismic refraction and related studies:Asynthesis.Canadian Journalof Earth Sciences,42(6):1277-1293
Clowes RM.1992.LITHOPROBE:An integrated approach to studies ofcrustal evolution.Geotimes.Agu:12-14
Dong SW.1991.Tectonic analysis of genesis on iron-coppermineralization belt in Middle-Lower Yangtze Valley.ActaGeoscientia Sinica,12(2):43-56(in Chinese with Englishabstract)
Dong SW,Wu XZ,Gao R,Lu DY,Li YK,He YQ,Tang JF,Cao FY,Hou MJ and Huang DZ.1998.On the crust velocity levels anddynamics of the Dabieshan orogeneic belt.Acta Geophysica Sinica,41(3):349-361(in Chinese with English abstract)
Gao R,Wu GJ and Fei DY.1985.East China seas and adjacent crusttectonic problems.The27thInternational Geology MeetingSymposium(2).Beijing:Geological Publishing House,203-210(in Chinese)
Gao R,Huang DD,Lu DY,Qian GH,Li YK,Kuang CY,Li QS,LiPW,Feng RJ and Guan Y.2000.Deep seismic reflection profileacross the juncture zone between the Tarim basin and the WestKunlun Mountains.Chinese Sci.Bull.,45:2281-2286
Gao R,Wang HY,Ma YS,Zhu X,Li QS,Li PW,Kuang CY and LuZW.2006.Tectonic relationships between the Zoigêbasin of theSong-Pan block and the West Qinling orogen at lithosphere scale:Results of deep seismic reflection profiling.Acta GeoscienticaSinica,27(5):411-418(in Chinese with English abstract)
Hou HS,Gao R,Lu ZW and Ma LC.2010.Tomography imagingexperiment of iron-polymetallic deposits near-surface velocitystructure and its application in the Luzong Reaches.Acta PetrologicaSinica,26(9):2623-2629(in Chinese with English abstract)
Liu JK,Kuang CY,Gao R,Xue AM,Lu ZW,Hou HS and Wang HY.2010.Data processing test of deep seismic reflection profile inLuzong ore concentrated area.Acta Petrologica Sinica,26(9):2561-2576(in Chinese with English abstract)
Lu ZW,Gao R,Kuang CY,Liu JK,Hou HS,Feng SY and Wang HY.2010.A economical and changeable gathering test:Research ondeep seismic reflection profile in Luzong ore concentration area.ActaPetrologica Sinica,26(9):2553-2560(in Chinese with Englishabstract)
LüQT,Yang ZS,Yan JY and Xu WY.2007.The metallogenicpotential,prospecting idea and primary attempt in depth of the orebelt of the Middle and Lower Reach of the Yangtze River:A casestudy of Tongling ore district.Acta Geologica Sinica,81(7):865-881(in Chinese with English abstract)
Nelson KD,Zhao WJ,Brown LD,Kuo J,Che JK,Liu XW,KlempererSL,Makovsky Y,Meissner R,Mechie J,Kind R,Wenzel F,Ni J,Nabelek J,Chen LS,Tan HD,Wei WB,Jones AG,Booker J,Unsworth M,Kidd WSF,Hauck M,Alsdorf D,Ross A,Cogan M,Wu CD,Sandvol E and Edwards M.1996.Partially molten middlecrust beneath Southern Tibet:Synthesis of project INDEPTHresults.Science,274:1684-1688
Ren QJ,Liu XS,Xu ZW,Qiu DT,Hu WX,Fang CQ,Ruan HC,DongHG,Li ZL and Wu QZ.1991.Mesozoic Volcano-TectonicDepression and Its Mineralizing Process in Lujing-Zongyang Area,Anhui Province.Beijing:Geological Publishing House,1-145(inChinese with English abstract)
Ren QJ,Wang DZ,Xu ZW,Dong HG,Pan LQ,Yang RY,Fang CQand Hu JA.1993.Forming evolution and mineralization of volcanic-structural depression in Luzong region of Anhui.Acta GeologicaSinica,67(2):131-145(in Chinese with English abstract)
Teng JW.2006.Strengthening geophysical exploration and exploitation ofmetallic minerals in the second deep space of the crustal interior.Geological Bulletin of China,25(7):767-771(in Chinese withEnglish abstract)
Xie Z,Li QZ,Chen JF and Gao TS.2007.The Geochemicalcharacteristics of the Early Cretaceous volcanics in Luzong region andtheir source significances.Geological Journal of China Universities,13(2):235-249(in Chinese with English abstract)
Zhang JS,Gao R,Li QS,Guan Y,Peng C,Li PW,Lu ZW,Wang HYand Hou HS.2010.Characteristics of gravity and magnetic field ofLuzong volcano basin and its periphery.Acta Petrologica Sinica,26(9):2613-2622(in Chinese with English abstract)
Zhao WJ,Nelson KD and Project Team.1993.Deep seismic reflectionevidence for continental underthrusting beneath southern Tibet.Nature,366:557-559
Zhou TF,Fan Y,Yuan F,Lu SM,Shang SG,David C,Sebastien Mand Zhao GC.2008.Geochronology of the volcanic rocks in the Lu-Zong(Lujiang-Zongyang)Basin and its significances.Science inChina(Series D),38(10):1342-1353(in Chinese)
董树文.1991.长江中下游铁铜矿带成因之构造分析.地球学报,12(2):43-56
董树文,吴宣志,高锐,卢德源,李英康,何义权,汤加富,曹奋扬,侯明金,黄德志.1998.大别造山带地壳速度结构与动力学.地球物理学报,41(3):349-361
高锐,吴功建,费栋宇.1985.中国东部及邻海地壳构造若干问题研究.第27届国际地质大会交流学术论文集(2).北京:地质出版社,203-210
高锐,黄东定,卢德源,钱桂华,李英康,匡朝阳,李朋武,冯如进,管烨.2000.横过西昆仑-塔里木结合带的深地震反射剖面.科学通报,45(17):1874-1879
锐,王海燕,马永生,朱铉,李秋生,李鹏武,匡朝阳,卢占武.2006.松潘地块若尔盖盆地与西秦岭造山带岩石圈尺度的构造关系——深地震反射剖面探测成果.地球学报,27(5):411-418
侯贺晟,高锐,卢占武,刘金凯,匡朝阳,马立成.2010.庐枞铁多金属矿集区龙桥铁矿反射地震初至波层析成像与隐伏矿床预测.岩石学报,26(9):2623-2629
刘金凯,匡朝阳,高锐,薛爱民,卢占武,侯贺晟,王海燕.2010.庐枞矿集区深地震反射剖面处理实验研究.岩石学报,26(9):2561-2576
卢占武,高锐,匡朝阳,刘金凯,侯贺晟,酆少英,王海燕.2010.一个经济的变化观测系统采集实验——庐枞金属矿集区深地震反射剖面探测研究.岩石学报,26(9):2553-2560
吕庆田,杨竹森,严加永,徐文艺.2007.长江中下游成矿带深部成矿潜力、找矿思路与初步尝试——以铜陵矿集区为实例.地质学报,81(7):865-881
任启江,刘孝善,徐兆文,邱德同,胡文-,方长泉,阮惠础,董火根,李兆麟,吴启志.1991.安徽庐枞中生代火山构造洼地及其成矿作用.北京:地质出版社,1-145
任启江,王德滋,徐兆文,董火根,潘龙泉,杨荣勇,方长泉,胡进安.1993.安徽庐枞火山-构造洼地的形成、演化及成矿.地质学报,67(2):131-145
滕吉文.2006.强化开展地壳内部第二深度空间金属矿产资源地球物理找矿、勘探和开发.地质通报,25(7):767-771
谢智,李全忠,陈江峰,高天山.2007.庐枞早白垩世火山岩的地球化学特征及其源区意义.高校地质学报,13(2):235-249
张季生,高锐,李秋生,管烨,彭冲,李朋武,卢占武,侯贺晟.2010.庐枞火山岩盆地及其外围重、磁场特征.岩石学报,26(9):2613-2622
周涛发,范裕,袁峰,陆三明,尚世贵,David C,Sebastien M,赵国春.2008.安徽庐枞(庐江-枞阳)盆地火山岩的年代学及其意义.中国科学(D辑),38(11):1342-1353
Brown LD.1991.A new map of crustal“terranes”in the United Statesfrom COCORP deep seismic reflection profiling.Geophy.J.Int.,105:3-13
Brown LD,Zhao WJ,Nelson KD,Hauck M,Alsdorf D,Ross A,CoganM,Liu XW and Che JK.1996.Bright spots,structure andmagmatism in southern Tibet from INDEPT seismic reflectionprofiling.Science,274:1688-1690
Clowes RM,Hammer PTC,Fernandez-ViejoG and Welford JK.2005.Lithospheric structure in northwestern Canada from Lithoprobeseismic refraction and related studies:Asynthesis.Canadian Journalof Earth Sciences,42(6):1277-1293
Clowes RM.1992.LITHOPROBE:An integrated approach to studies ofcrustal evolution.Geotimes.Agu:12-14
Dong SW.1991.Tectonic analysis of genesis on iron-coppermineralization belt in Middle-Lower Yangtze Valley.ActaGeoscientia Sinica,12(2):43-56(in Chinese with Englishabstract)
Dong SW,Wu XZ,Gao R,Lu DY,Li YK,He YQ,Tang JF,Cao FY,Hou MJ and Huang DZ.1998.On the crust velocity levels anddynamics of the Dabieshan orogeneic belt.Acta Geophysica Sinica,41(3):349-361(in Chinese with English abstract)
Gao R,Wu GJ and Fei DY.1985.East China seas and adjacent crusttectonic problems.The27thInternational Geology MeetingSymposium(2).Beijing:Geological Publishing House,203-210(in Chinese)
Gao R,Huang DD,Lu DY,Qian GH,Li YK,Kuang CY,Li QS,LiPW,Feng RJ and Guan Y.2000.Deep seismic reflection profileacross the juncture zone between the Tarim basin and the WestKunlun Mountains.Chinese Sci.Bull.,45:2281-2286
Gao R,Wang HY,Ma YS,Zhu X,Li QS,Li PW,Kuang CY and LuZW.2006.Tectonic relationships between the Zoigêbasin of theSong-Pan block and the West Qinling orogen at lithosphere scale:Results of deep seismic reflection profiling.Acta GeoscienticaSinica,27(5):411-418(in Chinese with English abstract)
Hou HS,Gao R,Lu ZW and Ma LC.2010.Tomography imagingexperiment of iron-polymetallic deposits near-surface velocitystructure and its application in the Luzong Reaches.Acta PetrologicaSinica,26(9):2623-2629(in Chinese with English abstract)
Liu JK,Kuang CY,Gao R,Xue AM,Lu ZW,Hou HS and Wang HY.2010.Data processing test of deep seismic reflection profile inLuzong ore concentrated area.Acta Petrologica Sinica,26(9):2561-2576(in Chinese with English abstract)
Lu ZW,Gao R,Kuang CY,Liu JK,Hou HS,Feng SY and Wang HY.2010.A economical and changeable gathering test:Research ondeep seismic reflection profile in Luzong ore concentration area.ActaPetrologica Sinica,26(9):2553-2560(in Chinese with Englishabstract)
LüQT,Yang ZS,Yan JY and Xu WY.2007.The metallogenicpotential,prospecting idea and primary attempt in depth of the orebelt of the Middle and Lower Reach of the Yangtze River:A casestudy of Tongling ore district.Acta Geologica Sinica,81(7):865-881(in Chinese with English abstract)
Nelson KD,Zhao WJ,Brown LD,Kuo J,Che JK,Liu XW,KlempererSL,Makovsky Y,Meissner R,Mechie J,Kind R,Wenzel F,Ni J,Nabelek J,Chen LS,Tan HD,Wei WB,Jones AG,Booker J,Unsworth M,Kidd WSF,Hauck M,Alsdorf D,Ross A,Cogan M,Wu CD,Sandvol E and Edwards M.1996.Partially molten middlecrust beneath Southern Tibet:Synthesis of project INDEPTHresults.Science,274:1684-1688
Ren QJ,Liu XS,Xu ZW,Qiu DT,Hu WX,Fang CQ,Ruan HC,DongHG,Li ZL and Wu QZ.1991.Mesozoic Volcano-TectonicDepression and Its Mineralizing Process in Lujing-Zongyang Area,Anhui Province.Beijing:Geological Publishing House,1-145(inChinese with English abstract)
Ren QJ,Wang DZ,Xu ZW,Dong HG,Pan LQ,Yang RY,Fang CQand Hu JA.1993.Forming evolution and mineralization of volcanic-structural depression in Luzong region of Anhui.Acta GeologicaSinica,67(2):131-145(in Chinese with English abstract)
Teng JW.2006.Strengthening geophysical exploration and exploitation ofmetallic minerals in the second deep space of the crustal interior.Geological Bulletin of China,25(7):767-771(in Chinese withEnglish abstract)
Xie Z,Li QZ,Chen JF and Gao TS.2007.The Geochemicalcharacteristics of the Early Cretaceous volcanics in Luzong region andtheir source significances.Geological Journal of China Universities,13(2):235-249(in Chinese with English abstract)
Zhang JS,Gao R,Li QS,Guan Y,Peng C,Li PW,Lu ZW,Wang HYand Hou HS.2010.Characteristics of gravity and magnetic field ofLuzong volcano basin and its periphery.Acta Petrologica Sinica,26(9):2613-2622(in Chinese with English abstract)
Zhao WJ,Nelson KD and Project Team.1993.Deep seismic reflectionevidence for continental underthrusting beneath southern Tibet.Nature,366:557-559
Zhou TF,Fan Y,Yuan F,Lu SM,Shang SG,David C,Sebastien Mand Zhao GC.2008.Geochronology of the volcanic rocks in the Lu-Zong(Lujiang-Zongyang)Basin and its significances.Science inChina(Series D),38(10):1342-1353(in Chinese)
董树文.1991.长江中下游铁铜矿带成因之构造分析.地球学报,12(2):43-56
董树文,吴宣志,高锐,卢德源,李英康,何义权,汤加富,曹奋扬,侯明金,黄德志.1998.大别造山带地壳速度结构与动力学.地球物理学报,41(3):349-361
高锐,吴功建,费栋宇.1985.中国东部及邻海地壳构造若干问题研究.第27届国际地质大会交流学术论文集(2).北京:地质出版社,203-210
高锐,黄东定,卢德源,钱桂华,李英康,匡朝阳,李朋武,冯如进,管烨.2000.横过西昆仑-塔里木结合带的深地震反射剖面.科学通报,45(17):1874-1879
锐,王海燕,马永生,朱铉,李秋生,李鹏武,匡朝阳,卢占武.2006.松潘地块若尔盖盆地与西秦岭造山带岩石圈尺度的构造关系——深地震反射剖面探测成果.地球学报,27(5):411-418
侯贺晟,高锐,卢占武,刘金凯,匡朝阳,马立成.2010.庐枞铁多金属矿集区龙桥铁矿反射地震初至波层析成像与隐伏矿床预测.岩石学报,26(9):2623-2629
刘金凯,匡朝阳,高锐,薛爱民,卢占武,侯贺晟,王海燕.2010.庐枞矿集区深地震反射剖面处理实验研究.岩石学报,26(9):2561-2576
卢占武,高锐,匡朝阳,刘金凯,侯贺晟,酆少英,王海燕.2010.一个经济的变化观测系统采集实验——庐枞金属矿集区深地震反射剖面探测研究.岩石学报,26(9):2553-2560
吕庆田,杨竹森,严加永,徐文艺.2007.长江中下游成矿带深部成矿潜力、找矿思路与初步尝试——以铜陵矿集区为实例.地质学报,81(7):865-881
任启江,刘孝善,徐兆文,邱德同,胡文-,方长泉,阮惠础,董火根,李兆麟,吴启志.1991.安徽庐枞中生代火山构造洼地及其成矿作用.北京:地质出版社,1-145
任启江,王德滋,徐兆文,董火根,潘龙泉,杨荣勇,方长泉,胡进安.1993.安徽庐枞火山-构造洼地的形成、演化及成矿.地质学报,67(2):131-145
滕吉文.2006.强化开展地壳内部第二深度空间金属矿产资源地球物理找矿、勘探和开发.地质通报,25(7):767-771
谢智,李全忠,陈江峰,高天山.2007.庐枞早白垩世火山岩的地球化学特征及其源区意义.高校地质学报,13(2):235-249
张季生,高锐,李秋生,管烨,彭冲,李朋武,卢占武,侯贺晟.2010.庐枞火山岩盆地及其外围重、磁场特征.岩石学报,26(9):2613-2622
周涛发,范裕,袁峰,陆三明,尚世贵,David C,Sebastien M,赵国春.2008.安徽庐枞(庐江-枞阳)盆地火山岩的年代学及其意义.中国科学(D辑),38(11):1342-1353
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