南黄海航空重力局部异常解析
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摘要
在南黄海海域航空重力测量的基础上进行了重力场分区,研究了重力场分区与区域地质环境的内在联系,探讨了形成局部异常的主要地质因素.采用有效的提取方法对局部异常进行了筛选和提取,并按成因划分为基岩局部凸起类异常、基岩局部凹陷类异常、侵入岩类异常、火山岩类异常.通过对典型剖面进行重磁联合反演,细化了各类异常的特征并分析引起异常的地质成因,认为基岩局部凸起类异常、基岩局部凹陷类异常、岩浆岩类异常是南黄海海域具有找油意义的重点局部异常.通过对局部异常进行处理与解释,尝试利用重力异常研究南黄海海域油气成藏的可能性.
On the basis of airborne gravimetry in the South Yellow Sea,this paper divides gravity field into three regions.Through studing internal relationships between gravity field division and regional geologic media,we discuss major geological factors which formed local anomalies.In the study area,We explore effective methods to extract local anomalies,then classify them as four classes according to the geological factors,which include anomalies of basement salients,basement sags,intrusive rocks,volcanic rocks.Using joint inverse of airborne gravity and magnetic profile,we discribe the characteristics of each type of anomalies,then analyse the factors caused anomalies.The results indicate that anomalies of basement salients,basement sags and magmatic rocks are the important prospecting anomalies which have significance to oil and gas exploration in the South Yellow Sea.Based on local anomalies processing and geological interpretation,we attend to study the possibility of hydrocarbon reservoir in the South Yellow Sea using airborne gravity anomalies.
On the basis of airborne gravimetry in the South Yellow Sea,this paper divides gravity field into three regions.Through studing internal relationships between gravity field division and regional geologic media,we discuss major geological factors which formed local anomalies.In the study area,We explore effective methods to extract local anomalies,then classify them as four classes according to the geological factors,which include anomalies of basement salients,basement sags,intrusive rocks,volcanic rocks.Using joint inverse of airborne gravity and magnetic profile,we discribe the characteristics of each type of anomalies,then analyse the factors caused anomalies.The results indicate that anomalies of basement salients,basement sags and magmatic rocks are the important prospecting anomalies which have significance to oil and gas exploration in the South Yellow Sea.Based on local anomalies processing and geological interpretation,we attend to study the possibility of hydrocarbon reservoir in the South Yellow Sea using airborne gravity anomalies.
引文
Foss C.2002.The resolution in geological mapping that can be\sexpeeted from airborne gravity gradiometry[C].//72nd\sAnnual International SEG Meeting,Expanded Abstracts,743-746.
Gabell A,Olson D,Tuekett H.2004.The GT-1A mobile\sgravimeter[C].//Lane R,ed.Airborne Gravity 2004-Abstracts from the ASEG-PESA Airborne Gravity 2004Workshop:Geoscience Australian Record 2004/18,55-146.
Han D F,Xie J,Liu C,et al.1994.The theory and method of\sinversing the multi-interfaces of density by gravity anomaly[J].Chinese Journal of Geophysics(in Chinese),37(S2):272-281.
Li J L.1998.Variable order sliding trend analysis method used in\sthe division of regional and local gravity anomalies[J].Computing Techniques for Geophysical and Geochemical\sExploration(in Chinese),20(1):53-61.
Li W Y,Xia B,Li D X.2006.Structural geochemical study of the\sYuxi fold-thrust belt in the Southern North China plate[J].Journal of China University of Geosciences,17(2):95-102.
Li W Y,Zhou J X,Guo Z H,et al.2010a.Tectonolayering\smethods of airborne gravimetry[J].Progress in Geophysics(in\sChinese),25(5):1641-1647,doi:10.3969/j.issn.1004-2903.2010.05.016.
Li W Y,Zhou J X,Xiong S Q,et al.2010b.Tectonic geometry of\sTan-lu faults in the Bohai Sea and its adjacent areas viewed from\sairborne gravity[J].Acta Geoscientica Sinica(in Chinese),31(4):549-556.
Li W Y,Zhou J X,Zhou X H,et al.2010c.Geological-genetic\sclassification and prospecting significance on local anomaly of\sairborne gravimetry[J].Advances in Earth Science(in\sChinese),25(10):1061-1069.
Li W Y,Lu W F,Liu Y X,et al.2012a.Superimposed versus\sresidual basin:the North Yellow Sea basin[J].Geoscience\sFrontiers,3(1):33-39.
Li W Y,Zhou J X,Xiong S Q,et al.2012b.Effect and prospect of\sbasic geological survey based on airborne gravimetry in China[J].Acta Geologica Sinica(English Edition),86(1):38-47.
Li W Y,Liu Y X,Xu J C.2013a.Comparative analysis and\shydrocarbon exploration on South Yellow Sea basin[J].Acta\sGeologica Sinica(English Edition),87(Suppl.):563-564.
Li W Y,Zhou J X,Xiong S Q,et al.2013b.Study of residual basin\sand tectonolayering based on airborne gravity and magnetic data[J].Acta Geologica Sinica(English Edition),87(4):1137-1153.
Li W Y,Liu Y X,Xu J C.2014a.Onshore-offshore structure and\shydrocarbon potential of the South Yellow Sea[J].Journal of\sAsian Earth Sciences,90:127-136.
Li W Y,Zhou J X,Liu Y X,et al.2014b.First application of\sairborne gravity to oil exploration in the Shengli oil province,eastern China[J].Exploration Geophysics,published online 17July,http://dx.doi.org/10.1071/EG13086.
Liu Y,Yan J Y,Wu M A,et al.2012.Exploring deep concealed\sore bodies based on gravity anomaly separation methods:A case\sstudy of the Nihe iron deposit[J].Chinese Journal of\sGeophysics(in Chinese),55(12):4181-4193,doi:10.6038/j.issn.0001-5733.2012.12.030.
Liu Y X,Li W Y,Xu J C.2012.Correlation analytical method and\sits application to airborne gravity and magnetic anomalies[J].Geophysical&Geochemical Exploration(in Chinese),36(5):783-787.
Liu Y X,Li W Y,Xu J C.2014.The utilization of wavelet\smagnitude method of gravity anomaly in fault identification[J].Geophysical&Geochemical Exploration(in Chinese),38(1):96-99.
Sun Z M,Xia Z R,Shi P.2004.Progress and advance in airborne\sgravimetry[J].Progress in Geophysics(in Chinese),19(3):492-496,doi:10.3969/j.issn.1004-2903.2004.03.002.
Wang H Y,Wu Y G,Jiao X H.2001.The solving methods of\sinversion on interface due to gravity or magnetic source[J].World Geology(in Chinese),20(4):379-383.
Wang Q S,Liu J H,Hao T Y,et al.2003.Deep tectonics between\sSouth Yellow Sea and North East China Sea[J].Progress in\sGeophysics(in Chinese),18(2):276-282,doi:10.3969/j.issn.1004-2903.2003.02.015.
Yang W C,Shi Z Q,Hou Z Z,et al.2001.Discrete wavelet\stransform for multiple decomposition of gravity anomalies[J].Chinese Journal of Geophysics(in Chinese),44(4):534-541.
Yu S C,Liu D Y,Sun L M.1999.Universal Kriging-A method\sused in division of regional and local gravity(magnetic)anomalies[J].Computing Techniques for Geophysical and\sGeochemical Exploration(in Chinese),21(1):35-44.
Zeng H L.2005.Gravity Field and Gravity Exploration(in Chinese)[M].Beijing:Geological Publishing House,114-235.
Zhang F X,Zhang F Q,Meng L S,et al.2005.Using cosine\stransform for forward modeling inversion of gravitational\sanomaly on density interface[J].Oil Geophysical Exploration(in Chinese),40(5):598-602.
Zhang Y M,Sheng J,Zhang G B.2006.Status and applications of\sairborne gravimetry[J].Progress in Exploration Geophysics(in\sChinese),29(2):94-97.
Zhou J X,Liu H J,Wang S T,et al.2004.The application of\sairborne gravity survey to earth science in foreign countries[J].Geophysical&Geochemical Exploration(in Chinese),28(2):119-122.
韩道范,谢靖,刘财,等.1994.利用重力异常反演多层密度分界面的理论和方法[J].地球物理学报,37(S2):272-281.
李九亮.1998.划分重力区域异常与局部异常的变阶滑动趋势分析法[J].物探化探计算技术,20(1):53-61.
李文勇,周坚鑫,郭志宏,等.2010a.航空重力构造分层方法[J].地球物理学进展,25(5):1641-1647,doi:10.3969/j.issn.1004-2903.2010.05.016.
李文勇,周坚鑫,熊盛青,等.2010b.从航空重力看郯庐断裂系(渤海)及其围区构造几何学特征[J].地球学报,31(4):549-556.
李文勇,周坚鑫,周锡华,等.2010c.航空重力局部异常地质成因分类及找矿意义[J].地球科学进展,25(10):1061-1069.
刘彦,严加永,吴明安,等.2012.基于重力异常分离方法寻找深部隐伏铁矿———以安徽泥河铁矿为例[J].地球物理学报,55(12):4181-4193,doi:10.6038/j.issn.0001-5733.2012.12.030.
刘燕戌,李文勇,徐剑春.2012.航空重、磁异常相关性分析方法及其应用[J].物探与化探,36(5):783-787.
刘燕戌,李文勇,徐剑春.2014.利用重力异常的小波模方法识别断层[J].物探与化探,38(1):96-99.
孙中苗,夏哲仁,石磐.2004.航空重力测量研究进展[J].地球物理学进展,19(3):492-496,doi:10.3969/j.issn.1004-2903.2004.03.002.
王海燕,吴燕冈,焦新华.2001.重磁异常界面反演中的计算方法[J].世界地质,20(4):379-383.
王谦身,刘建华,郝天珧,等.2003.南黄海南部与东海北部之间的深部构造[J].地球物理学进展,18(2):276-282,doi:10.3969/j.issn.1004-2903.2003.02.015.
杨文采,施志群,侯遵泽,等.2001.离散小波变换与重力异常多重分解[J].地球物理学报,44(4):534-541.
余生晨,刘大有,孙莉民.1999.划分重磁区域异常与局部异常的一种方法-泛克立格法[J].物探化探计算技术,21(1):35-44.
曾华霖.2005.重力场与重力勘探[M].北京:地质出版社,114-235.张凤旭,张凤琴,孟令顺,等.2005.基于余弦变换的密度界面重力异常正反演研究[J].石油地球物理勘探,40(5):598-602.
张永明,盛君,张贵宾.2006.航空重力测量技术的现状及应用[J].勘探地球物理进展,29(2):94-97.
周坚鑫,刘浩军,王守坦,等.2004.国外航空重力测量在地学中的应用[J].物探与化探,28(2):119-122.
Gabell A,Olson D,Tuekett H.2004.The GT-1A mobile\sgravimeter[C].//Lane R,ed.Airborne Gravity 2004-Abstracts from the ASEG-PESA Airborne Gravity 2004Workshop:Geoscience Australian Record 2004/18,55-146.
Han D F,Xie J,Liu C,et al.1994.The theory and method of\sinversing the multi-interfaces of density by gravity anomaly[J].Chinese Journal of Geophysics(in Chinese),37(S2):272-281.
Li J L.1998.Variable order sliding trend analysis method used in\sthe division of regional and local gravity anomalies[J].Computing Techniques for Geophysical and Geochemical\sExploration(in Chinese),20(1):53-61.
Li W Y,Xia B,Li D X.2006.Structural geochemical study of the\sYuxi fold-thrust belt in the Southern North China plate[J].Journal of China University of Geosciences,17(2):95-102.
Li W Y,Zhou J X,Guo Z H,et al.2010a.Tectonolayering\smethods of airborne gravimetry[J].Progress in Geophysics(in\sChinese),25(5):1641-1647,doi:10.3969/j.issn.1004-2903.2010.05.016.
Li W Y,Zhou J X,Xiong S Q,et al.2010b.Tectonic geometry of\sTan-lu faults in the Bohai Sea and its adjacent areas viewed from\sairborne gravity[J].Acta Geoscientica Sinica(in Chinese),31(4):549-556.
Li W Y,Zhou J X,Zhou X H,et al.2010c.Geological-genetic\sclassification and prospecting significance on local anomaly of\sairborne gravimetry[J].Advances in Earth Science(in\sChinese),25(10):1061-1069.
Li W Y,Lu W F,Liu Y X,et al.2012a.Superimposed versus\sresidual basin:the North Yellow Sea basin[J].Geoscience\sFrontiers,3(1):33-39.
Li W Y,Zhou J X,Xiong S Q,et al.2012b.Effect and prospect of\sbasic geological survey based on airborne gravimetry in China[J].Acta Geologica Sinica(English Edition),86(1):38-47.
Li W Y,Liu Y X,Xu J C.2013a.Comparative analysis and\shydrocarbon exploration on South Yellow Sea basin[J].Acta\sGeologica Sinica(English Edition),87(Suppl.):563-564.
Li W Y,Zhou J X,Xiong S Q,et al.2013b.Study of residual basin\sand tectonolayering based on airborne gravity and magnetic data[J].Acta Geologica Sinica(English Edition),87(4):1137-1153.
Li W Y,Liu Y X,Xu J C.2014a.Onshore-offshore structure and\shydrocarbon potential of the South Yellow Sea[J].Journal of\sAsian Earth Sciences,90:127-136.
Li W Y,Zhou J X,Liu Y X,et al.2014b.First application of\sairborne gravity to oil exploration in the Shengli oil province,eastern China[J].Exploration Geophysics,published online 17July,http://dx.doi.org/10.1071/EG13086.
Liu Y,Yan J Y,Wu M A,et al.2012.Exploring deep concealed\sore bodies based on gravity anomaly separation methods:A case\sstudy of the Nihe iron deposit[J].Chinese Journal of\sGeophysics(in Chinese),55(12):4181-4193,doi:10.6038/j.issn.0001-5733.2012.12.030.
Liu Y X,Li W Y,Xu J C.2012.Correlation analytical method and\sits application to airborne gravity and magnetic anomalies[J].Geophysical&Geochemical Exploration(in Chinese),36(5):783-787.
Liu Y X,Li W Y,Xu J C.2014.The utilization of wavelet\smagnitude method of gravity anomaly in fault identification[J].Geophysical&Geochemical Exploration(in Chinese),38(1):96-99.
Sun Z M,Xia Z R,Shi P.2004.Progress and advance in airborne\sgravimetry[J].Progress in Geophysics(in Chinese),19(3):492-496,doi:10.3969/j.issn.1004-2903.2004.03.002.
Wang H Y,Wu Y G,Jiao X H.2001.The solving methods of\sinversion on interface due to gravity or magnetic source[J].World Geology(in Chinese),20(4):379-383.
Wang Q S,Liu J H,Hao T Y,et al.2003.Deep tectonics between\sSouth Yellow Sea and North East China Sea[J].Progress in\sGeophysics(in Chinese),18(2):276-282,doi:10.3969/j.issn.1004-2903.2003.02.015.
Yang W C,Shi Z Q,Hou Z Z,et al.2001.Discrete wavelet\stransform for multiple decomposition of gravity anomalies[J].Chinese Journal of Geophysics(in Chinese),44(4):534-541.
Yu S C,Liu D Y,Sun L M.1999.Universal Kriging-A method\sused in division of regional and local gravity(magnetic)anomalies[J].Computing Techniques for Geophysical and\sGeochemical Exploration(in Chinese),21(1):35-44.
Zeng H L.2005.Gravity Field and Gravity Exploration(in Chinese)[M].Beijing:Geological Publishing House,114-235.
Zhang F X,Zhang F Q,Meng L S,et al.2005.Using cosine\stransform for forward modeling inversion of gravitational\sanomaly on density interface[J].Oil Geophysical Exploration(in Chinese),40(5):598-602.
Zhang Y M,Sheng J,Zhang G B.2006.Status and applications of\sairborne gravimetry[J].Progress in Exploration Geophysics(in\sChinese),29(2):94-97.
Zhou J X,Liu H J,Wang S T,et al.2004.The application of\sairborne gravity survey to earth science in foreign countries[J].Geophysical&Geochemical Exploration(in Chinese),28(2):119-122.
韩道范,谢靖,刘财,等.1994.利用重力异常反演多层密度分界面的理论和方法[J].地球物理学报,37(S2):272-281.
李九亮.1998.划分重力区域异常与局部异常的变阶滑动趋势分析法[J].物探化探计算技术,20(1):53-61.
李文勇,周坚鑫,郭志宏,等.2010a.航空重力构造分层方法[J].地球物理学进展,25(5):1641-1647,doi:10.3969/j.issn.1004-2903.2010.05.016.
李文勇,周坚鑫,熊盛青,等.2010b.从航空重力看郯庐断裂系(渤海)及其围区构造几何学特征[J].地球学报,31(4):549-556.
李文勇,周坚鑫,周锡华,等.2010c.航空重力局部异常地质成因分类及找矿意义[J].地球科学进展,25(10):1061-1069.
刘彦,严加永,吴明安,等.2012.基于重力异常分离方法寻找深部隐伏铁矿———以安徽泥河铁矿为例[J].地球物理学报,55(12):4181-4193,doi:10.6038/j.issn.0001-5733.2012.12.030.
刘燕戌,李文勇,徐剑春.2012.航空重、磁异常相关性分析方法及其应用[J].物探与化探,36(5):783-787.
刘燕戌,李文勇,徐剑春.2014.利用重力异常的小波模方法识别断层[J].物探与化探,38(1):96-99.
孙中苗,夏哲仁,石磐.2004.航空重力测量研究进展[J].地球物理学进展,19(3):492-496,doi:10.3969/j.issn.1004-2903.2004.03.002.
王海燕,吴燕冈,焦新华.2001.重磁异常界面反演中的计算方法[J].世界地质,20(4):379-383.
王谦身,刘建华,郝天珧,等.2003.南黄海南部与东海北部之间的深部构造[J].地球物理学进展,18(2):276-282,doi:10.3969/j.issn.1004-2903.2003.02.015.
杨文采,施志群,侯遵泽,等.2001.离散小波变换与重力异常多重分解[J].地球物理学报,44(4):534-541.
余生晨,刘大有,孙莉民.1999.划分重磁区域异常与局部异常的一种方法-泛克立格法[J].物探化探计算技术,21(1):35-44.
曾华霖.2005.重力场与重力勘探[M].北京:地质出版社,114-235.张凤旭,张凤琴,孟令顺,等.2005.基于余弦变换的密度界面重力异常正反演研究[J].石油地球物理勘探,40(5):598-602.
张永明,盛君,张贵宾.2006.航空重力测量技术的现状及应用[J].勘探地球物理进展,29(2):94-97.
周坚鑫,刘浩军,王守坦,等.2004.国外航空重力测量在地学中的应用[J].物探与化探,28(2):119-122.