对中国大陆壳体的放射性生热元素丰度的大地热流检验
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摘要
本文作者据《中国大陆壳体的区域元素丰度》一文给出的壳体放射性生热元素铀、钍、钾的丰度，计算出中国大陆三个主要壳体的平均热流值，将其与实测大地热流平均值进行对比。结果表明计算值不满足实测大地热流值的约束，这意味着该文给出的铀、钍、钾的丰度值偏高。我们认为，根据区域地震剖面地震波速推断岩性，再利用出露地表的相应岩石的成分估计地壳或地幔放射性生热元素丰度的方法，缺乏十分可靠的理论或实验基础。同时该文给出的中国大陆壳体的其他强不相容元素的丰度值是否可靠也值得商榷。
The calculated mean heat flow values of three main crustobodies in China mainland,which were deduced from abundances of uranium,thorium and potassium given by the article“ Regional element abundances of continental crustobodies in China” (Li et al.,Geotectonica et Metallogenia,1999,vol.23,101～ 107),were compared with the mean values from heat flow observations.The result shows that the calculated value is inconsistent with the constraint of observation.This fact means that the abundances of U,Th and K given by the article are too high.The author argued that the methodology used in the article does not have a reliable background in theory or experiment,which estimates the radioactive heat production elements′ abundance in crust or mantle from compositions of exposed rocks and by correlation of seismic velocity data from regional seismic profile with lithologies.Meanwhile,the abundances of other strong incompatible trace elements in the crustobodies given by the article are also unreliable.
The calculated mean heat flow values of three main crustobodies in China mainland,which were deduced from abundances of uranium,thorium and potassium given by the article“ Regional element abundances of continental crustobodies in China” (Li et al.,Geotectonica et Metallogenia,1999,vol.23,101～ 107),were compared with the mean values from heat flow observations.The result shows that the calculated value is inconsistent with the constraint of observation.This fact means that the abundances of U,Th and K given by the article are too high.The author argued that the methodology used in the article does not have a reliable background in theory or experiment,which estimates the radioactive heat production elements′ abundance in crust or mantle from compositions of exposed rocks and by correlation of seismic velocity data from regional seismic profile with lithologies.Meanwhile,the abundances of other strong incompatible trace elements in the crustobodies given by the article are also unreliable.
引文
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[6]1992 Rudnick R L.Xenolith─ Samples of the lower continental crust[C].In:Fountain D M,Arculus R,Kay R W eds. Continental Lower Crust. Amsterdam: Elsevier, 269─ 316.
[7]1993赵平 .中国东南地区岩石生热率研究 .博士学位论文 [D],北京 :中国科学院地质研究所 .96.
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[9]1993 Pollack H N,Hurter S J,Johnson J R.Heat flow from the Earth′ s interior:Analysis of the global data set[J].Rev. Geophys,31:267─ 280.
[10]1994陈国达 .壳体构造─一种综合大地构造学新概念 [J].,18(4):283─ 300.
[11]1994黎彤 .中国陆壳及其沉积层和上陆壳的化学元素丰度 [J].地球化学 ,23(2):140─ 145.
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[14]1996 Wang Jiyang,Xiong Liangping,Huang Shaopeng,et al.Geothermics in China[C].Beijing:Seismological Press, 299.
[15]1997滕吉文 ,熊绍柏 ,张中杰 ,等 .中国深部地震探测及其所揭示的岩石圈结构与深层动力过程 .见 :中国地球物理学会编 ,中国地球物理学会年刊 .1997.上海 :同济大学出版社 , 325.
[16]1997吴澄宇 ,万渝生 .稀土元素地球化学与花岗质岩石的成因─应用与问题 [C].见 :张炳熹 ,洪大卫 ,吴宣 志,主编 ,岩石圈研究的现代方法 .北京 :原子能出版社 ,201─ 214.
[17]1997鄢明才 ,迟清华 .中国东部地壳与岩石的化学组成 [M].北京 :科学出版社 , 292.
[18]1998 Rudnick R L,McDonough W F,O'Connell R J.Thermal structure,thickness and composition of coninental lito sphere[J].Chemical Geology,145:395─ 411.
[19]1999黎彤 ,袁怀雨 ,吴胜昔 ,程先富 .中国大陆壳体的区域元素丰度 [J].,23(2):101─ 107.
[20]1999a汪洋 .中国大陆大地热流分析 [D].博士学位论文 ,北京 :中国科学院地质研究所 .118.
[21]1999b汪洋 .利用地下流体 He同位素比值资料研究中国大陆地幔热流 [J].地球学报─中国地质科学院院报 , 20(增刊 ):48─ 50.
[22]1999c汪洋 .中国大陆及邻区大地热流分布特征 .地球学报─中国地质科学院院报 [J],1999,20 (增刊 ):51─ 53.
[23]2000汪洋 .对“新疆北部地区岩石生热率分布特征”一文的商榷 [J].中国科学技术大学学报 .30(5):627─ 632.
[2]1985黎彤 .岩石圈及其结构层的元素丰度 [J].地质学报 ,59(3):219─ 227.
[3]1988赵伦山 ,张本仁 .地球化学 [M].北京 :地质出版社 ,404.
[4]1988 Rybach L.Determination of heat production rate[C].In:Haenel R,Rybach L,Stegena L,(eds).Handbook of ter ristrial heat flow density.Holland:Kluwer Academic Publishers,125─ 142.
[5]1990 Williams C F,Anderson R N.Thermophysical properties of the Earth′ s crust:In situ measurements from continen tal and ocean drilling[J].J Geophys.Res., 95: 9209─ 9236.
[6]1992 Rudnick R L.Xenolith─ Samples of the lower continental crust[C].In:Fountain D M,Arculus R,Kay R W eds. Continental Lower Crust. Amsterdam: Elsevier, 269─ 316.
[7]1993赵平 .中国东南地区岩石生热率研究 .博士学位论文 [D],北京 :中国科学院地质研究所 .96.
[8]1993 Condie K C.Chemical composition and evolution of the upper continental crust:constrasting results from surface samples and shales[J].Chemical Geology, 104: 1─ 37.
[9]1993 Pollack H N,Hurter S J,Johnson J R.Heat flow from the Earth′ s interior:Analysis of the global data set[J].Rev. Geophys,31:267─ 280.
[10]1994陈国达 .壳体构造─一种综合大地构造学新概念 [J].,18(4):283─ 300.
[11]1994黎彤 .中国陆壳及其沉积层和上陆壳的化学元素丰度 [J].地球化学 ,23(2):140─ 145.
[12]1994张本仁 ,骆庭川 ,高山,等著 .秦巴岩石圈构造及成矿规律地球化学研究 [M].武汉 :中国地质大学出版 社 ,446.
[13]1995 Christensen N I,Mooney W D.Seismic velocity structure and composition of the continental crust:A global view [J].J Geophys Res,100:9761─ 9788.
[14]1996 Wang Jiyang,Xiong Liangping,Huang Shaopeng,et al.Geothermics in China[C].Beijing:Seismological Press, 299.
[15]1997滕吉文 ,熊绍柏 ,张中杰 ,等 .中国深部地震探测及其所揭示的岩石圈结构与深层动力过程 .见 :中国地球物理学会编 ,中国地球物理学会年刊 .1997.上海 :同济大学出版社 , 325.
[16]1997吴澄宇 ,万渝生 .稀土元素地球化学与花岗质岩石的成因─应用与问题 [C].见 :张炳熹 ,洪大卫 ,吴宣 志,主编 ,岩石圈研究的现代方法 .北京 :原子能出版社 ,201─ 214.
[17]1997鄢明才 ,迟清华 .中国东部地壳与岩石的化学组成 [M].北京 :科学出版社 , 292.
[18]1998 Rudnick R L,McDonough W F,O'Connell R J.Thermal structure,thickness and composition of coninental lito sphere[J].Chemical Geology,145:395─ 411.
[19]1999黎彤 ,袁怀雨 ,吴胜昔 ,程先富 .中国大陆壳体的区域元素丰度 [J].,23(2):101─ 107.
[20]1999a汪洋 .中国大陆大地热流分析 [D].博士学位论文 ,北京 :中国科学院地质研究所 .118.
[21]1999b汪洋 .利用地下流体 He同位素比值资料研究中国大陆地幔热流 [J].地球学报─中国地质科学院院报 , 20(增刊 ):48─ 50.
[22]1999c汪洋 .中国大陆及邻区大地热流分布特征 .地球学报─中国地质科学院院报 [J],1999,20 (增刊 ):51─ 53.
[23]2000汪洋 .对“新疆北部地区岩石生热率分布特征”一文的商榷 [J].中国科学技术大学学报 .30(5):627─ 632.
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