沉积盆地中地震波速度与地层年龄有关吗?
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摘要
通过分析沉积盆地中地震波速度与地层年龄的关系,指出地震波速度与地层年龄没有内在的、成因上的联系.由于沉降速度的大小、沉积成岩后期热液活动、沉积间断所造成的不整合面、盆地地质构造复杂等因素,使这种关系通常有不确定性.文献[1]给出的地震波速度与地层年龄的关系式所计算的地层年龄、盆地基底年龄与实测年龄之间有很大的误差,这种计算方法缺乏科学性,没有任何地质意义.
The relationship between seismic wave velocity and geologic age in basins is analyzed. It is pointed out that due to the different deposition rate, hydrothermal fluids during the diagenesis, uncomformable surface and the complex geologic structures and so on, seismic wave velocity and geological age are not related in origin.The stratigraphic and basement ages calculated with the seismic velocity-age formula are significantly different from the ages determined by isotopic methods, and the calculated ages are non-scientific and meaningless geologically.
The relationship between seismic wave velocity and geologic age in basins is analyzed. It is pointed out that due to the different deposition rate, hydrothermal fluids during the diagenesis, uncomformable surface and the complex geologic structures and so on, seismic wave velocity and geological age are not related in origin.The stratigraphic and basement ages calculated with the seismic velocity-age formula are significantly different from the ages determined by isotopic methods, and the calculated ages are non-scientific and meaningless geologically.
引文
[1] 郭桂红,郝重涛,石双虎等.沉积盆地中地震波速度与地层年代的关系.地球物理学报,2009,52(7) :1793～1799 Guo G H,Hao C T,Shi S H,et al.The relationship between seismic wave velocity and geologic time in sedimentary basin.Chinese J.Geophys.(in Chinese),2009,52(7) :1793～1799
[2] Weatherby B B,Faust L Y.Influence of geological factors on longitudinal seismic velocities.Bulletin A A P G,1935,19(1) :1～8
[3] Faust L Y.Seismic velocity as a function of depth and geologic time.Geophysics,1951,16(2) :192～206
[4] Faust L Y.A velocity function including lithologic variation.Geophysics,1953,18(3) :586～597
[5] Baskell N A.The relation between depth,lithology and seismic wave velocity in Tertiary sandstones and shales.Geophysics,1941,6:318～326
[6] Stulken E J.Seismic velocities in the southeastern San Joaquin Valley of California.Geophysics,1941,6:327～355
[7] Acheson C H.Time-depth and velocity-depth relations in western Canada.Geophysics,1963,28(5) :894～909
[8] 郭桂红,韩 锋.地质定年方法综述与地球物理定年.地球物理学进展,2007,22(1) :87～94 Guo G H,Han F.The overview of dating methods and the geophysical dating.Progress in Geophysics(in Chinese),2007,22(1) :87～94
[9] 朱炳泉.固体地球科学的同位素体系理论.北京:科学出版社,1998． 321 Zhu B Q.Isotopic System Theory in the Solid Geoscience(in Chinese).Beijing:Science Press,1998． 321
[10] 业渝光.地质年代学理论与实践.北京:地质出版社,2003． 1～383 Ye Y G.The Theory and Parctice of Geochronology(in Chinese).Beijing:Geological Publishing House,2003． 1～383
[11] 赵俊峰,刘池洋.定年的非生物地层学方法.新疆石油地质,2006,27(6) :757～762 Zhao J F,Liu C Y.Non-biostratigraphical methods for dating.Xinjiang Petroleum Geology(in Chinese),2006,27(6) :757～762
[2] Weatherby B B,Faust L Y.Influence of geological factors on longitudinal seismic velocities.Bulletin A A P G,1935,19(1) :1～8
[3] Faust L Y.Seismic velocity as a function of depth and geologic time.Geophysics,1951,16(2) :192～206
[4] Faust L Y.A velocity function including lithologic variation.Geophysics,1953,18(3) :586～597
[5] Baskell N A.The relation between depth,lithology and seismic wave velocity in Tertiary sandstones and shales.Geophysics,1941,6:318～326
[6] Stulken E J.Seismic velocities in the southeastern San Joaquin Valley of California.Geophysics,1941,6:327～355
[7] Acheson C H.Time-depth and velocity-depth relations in western Canada.Geophysics,1963,28(5) :894～909
[8] 郭桂红,韩 锋.地质定年方法综述与地球物理定年.地球物理学进展,2007,22(1) :87～94 Guo G H,Han F.The overview of dating methods and the geophysical dating.Progress in Geophysics(in Chinese),2007,22(1) :87～94
[9] 朱炳泉.固体地球科学的同位素体系理论.北京:科学出版社,1998． 321 Zhu B Q.Isotopic System Theory in the Solid Geoscience(in Chinese).Beijing:Science Press,1998． 321
[10] 业渝光.地质年代学理论与实践.北京:地质出版社,2003． 1～383 Ye Y G.The Theory and Parctice of Geochronology(in Chinese).Beijing:Geological Publishing House,2003． 1～383
[11] 赵俊峰,刘池洋.定年的非生物地层学方法.新疆石油地质,2006,27(6) :757～762 Zhao J F,Liu C Y.Non-biostratigraphical methods for dating.Xinjiang Petroleum Geology(in Chinese),2006,27(6) :757～762
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