中国花岗岩类的化学成分和元素丰度

2025-03-18 11:30:50
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回答1:

依据采自全国范围内750个有代表性的大中型花岗岩类岩体的767件组合样的实测分析数据为基础,计算出全国范围、不同构造单元、不同时代花岗岩类及不同岩石类型花岗岩的系列元素丰度值(史长义,2003;史长义等,2005a,2005b,2007)。

1)中国花岗岩类总体的近70种元素或成分的总平均值和元素丰度;

2)中国花岗岩与中国碱长花岗岩、正长花岗岩、二长花岗岩、花岗闪长岩、石英二长岩、石英二长闪长岩等不同岩石类型花岗岩的近70种元素或成分的平均值和元素丰度;

3)中国太古宙、元古宙、早古生代、晚古生代、中生代、新生代花岗岩类及不同时代碱长花岗岩、正长花岗岩、二长花岗岩的近70种元素或成分的平均值和元素丰度;

4)以任纪舜等(1999)的中国大地构造单元的划分方案为基础,结合本书所涉及花岗岩类样品的分布,计算提出了天山-兴安造山系、中朝准地台、昆仑-祁连-秦岭造山系、滇藏造山系、扬子准地台、华南-右江造山带、喜马拉雅造山带等中国7大构造单元花岗岩类及不同大地构造单元碱长花岗岩、正长花岗岩、二长花岗岩的近70种元素或成分的平均值和元素丰度。

各种丰度值现列于表4-1至表4-9。

表4-1 中国花岗岩类及不同岩石类型花岗岩的元素丰度 Table4-1 The total average chemical compositions and element abundances of China's granitoid and granitoid of different rock types

续表

续表

注:Nc—组合样数;Ns—采集样品数。单位:Au、Ag、Cd、Hg为ng/g;氧化物为%;其余为μg/g。

Nc—number of analysed composite samples;Ns—number of collected samples.Content units:10-9for Au,Ag,Cd,Hg;10-2for major elements;10-6for others.

表4-2 中国不同构造单元花岗岩类的元素丰度 Table4-2 The total average chemical compositions and element abundances of granitoid in seven geotectonic units of China

续表

续表

Nc—组合样数;Ns—采集样品数。单位:Au、Ag、Cd、Hg为ng/g;氧化物为%;其余为μg/g。

单元:1—天山-兴安造山系;2—中朝准地台;3—昆仑-祁连-秦岭造山系;6—滇藏造山系;7—扬子准地台;8—华南-右江造山带;9—喜马拉雅造山带

Nc—number of analysed composite samples;Ns—number of collected samples.Content units:10-9for Au,Ag,Cd,Hg;10-2for major elements;10-6for others.

Geotectonic units:1—Tianshan-Xing'an orogenic series;2—Sino-Korean metaplatform;3—Kunlun—Qilian-Qin-ling orogenic series;6—Yunnan-Tibet orogenic series;7—Yangtze metaplatform;8—South China-Youjiang orogenic zone;9—Himalayan orogenic zone.

表4-3 中国不同构造单元碱长花岗岩的元素丰度 Table4-3 The total average chemical compositions and element abundances of alkalifeldspar granite in 6 geotectonic units of China

续表

Nc—组合样数;Ns—采集样品数。单位:Au、Ag、Cd、Hg为ng/g;氧化物为%;其余为μg/g。

单元:1—天山-兴安造山系;2—中朝准地台;3—昆仑-祁连-秦岭造山系;6—滇藏造山系;7—扬子准地台;8—华南-右江造山带

表中“—”表示该统计单元该元素的分析数据太少,缺少统计学意义。

Nc—number of analysed composite samples;Ns—number of collected samples.Content units:10-9for Au,Ag,Cd,Hg;10-2for major elements;10-6for others.

Geotectonic units:1—Tianshan-Xing'an orogenic series;2—Sino-Korean metaplatform;3—Kunlun-Qilian-Qinling orogenic series;6—Yunnan-Tibet orogenic series;7—Yangtze metaplatform;8—South China-Youjiang orogenic zone.

“—”in the table represents no statistical significance due to insufficiency of number of analyzed data.

表4-4 中国不同构造单元正长花岗岩的元素丰度 Table4-4 The total average chemical compositions and element abundances of syenogranite in 7 geotectonic units of China

续表

Nc—组合样数;Ns—采集样品数。单位:Au、Ag、Cd、Hg为ng/g;氧化物为%;其余为μg/g。

单元:1—天山-兴安造山系;2—中朝准地台;3—昆仑-祁连-秦岭造山系;6—滇藏造山系;7—扬子准地台;8—华南-右江造山带;9—喜马拉雅造山带。

表中“—”表示该统计单元该元素的分析数据太少,缺少统计学意义。

Nc—number of analysed composite samples;Ns—number of collected samples.Content units:10-9for Au,Ag,Cd,Hg;10-2for major elements;10-6for others.

Geotectonic units:1—Tianshan-Xing'an orogenic series;2—Sino-Korean metaplatform;3—Kunlun-Qilian-Qinling orogenic series;6—Yunnan-Tibet orogenic series;7—Yangtze metaplatform;8—South China-Youjiang orogenic zone;9—Himalayan orogenic zone.

“—”in the table represents no statistical significance due to insufficiency of number of analyzed data.

表4-5 中国不同构造单元二长花岗岩的元素丰度 Table4-5 The total average chemical compositions and element abundances of adamellite in 7 geotectonic units of China

续表

Nc—组合样数;Ns—采集样品数。单位:Au、Ag、Cd、Hg为ng/g;氧化物为%;其余为μg/g。

单元:1—天山-兴安造山系;2—中朝准地台;3—昆仑-祁连-秦岭造山系;6—滇藏造山系;7—扬子准地台;8—华南-右江造山带;9—喜马拉雅造山带。

表中“—”表示该统计单元该元素的分析数据太少,缺少统计学意义。

Nc—number of analysed composite samples;Ns—number of collected samples.Content units:10-9for Au,Ag,Cd,Hg;10-2for major elements;10-6for others.

Geotectonic units:1—Tianshan-Xing'an orogenic series;2—Sino-Korean metaplatform;3—Kunlun-Qilian-Qinling orogenic series;6—Yunnan-Tibet orogenic series;7—Yangtze metaplatform;8—South China-Youjiang orogenic zone;9—Himalayan orogenic zone.

“—”in the table represents no statistical significance due to insufficiency of number of analyzed data.

表4-6 中国不同时代花岗岩类元素丰度值 Table4-6 The total average chemical compositions and element abundances of China's granitoid of different geological ages

续表

Nc—组合样数;Ns—采集样品数。单位:Au、Ag、Cd、Hg为ng/g;氧化物为%;其余为μg/g。

Cz—新生代;Mz—中生代;Pz2—晚古生代;Pz1—早古生代;Pt—元古宙;Ar—太古宙。

表中“—”表示该统计单元该元素的分析数据太少,缺少统计学意义。

Nc—number of analysed composite samples;Ns—number of collected samples.Content units:10-9for Au,Ag,Cd,Hg;10-2for major elements;10-6for others.

Cz—Cenozoic;Mz—Mesozoic;Pz2—Neopaleozoic;Pz1—Eopaleozoic;Pt—Proterozoic;Ar—Archaeozoic.

“—”in the table represents no statistical significance due to insufficiency of number of analyzed data.

表4-7 中国不同时代碱长花岗岩元素丰度值 Table4-7 The total average chemical compositions and element abundances of alkalifeldspar granite of different geological ages in China

续表

Nc—组合样数;Ns—采集样品数。单位:Au、Ag、Cd、Hg为ng/g;氧化物为%;其余为μg/g。

Cz—新生代;Mz—中生代;Pz2—晚古生代;Pz1—早古生代;Pt—元古宙;Ar—太古宙。

表示“—”表示该统计单元该元素的分析数据太少,缺少统计学意义。

Nc—number of analysed composite samples;Ns—number of collected samples.Content units:10-9for Au,Ag,Cd,Hg;10-2for major elements;10-6for others.

Cz—Cenozoic;Mz—Mesozoic;Pz2—Neopaleozoic;Pz1—Eopaleozoic;Pt—Proterozoic;Ar—Archaeozoic.

“—”in the table represents no statistical significance due to insufficiency of number of analyzed data.

表4-8 中国不同时代正长花岗岩元素丰度值 Table4-8 The total average chemical compositions and element abundances of syenograniteof different geological ages in China

续表

Nc—组合样数;Ns—采集样品数。单位:Au、Ag、Cd、Hg为ng/g;氧化物为%;其余为μg/g。

Cz—新生代;Mz—中生代;Pz2—晚古生代;Pz1—早古生代;Pt—元古宙;Ar—太古宙。

表中“—”表示该统计单元该元素的分析数据太少,缺少统计学意义。

Nc—number of analysed composite samples;Ns—number of collected samples.Content units:10-9for Au,Ag,Cd,Hg;10-2for major elements;10-6for others.

Cz—Cenozoic;Mz—Mesozoic;Pz2—Neopaleozoic;Pz1—Eopaleozoic;Pt—Proterozoic;Ar—Archaeozoic.

“—”in the table represents no statistical significance due to insufficiency of number of analyzed data.

表4-9 中国不同时代二长花岗岩元素丰度值 Table4-9 The total average chemical compositions and element abundances of adamellite of different geological ages in China

续表

Nc—组合样数;Ns—采集样品数。单位:Au、Ag、Cd、Hg为ng/g;氧化物为%;其余为μg/g。

Cz—新生代;Mz—中生代;Pz2—晚古生代;Pz1—早古生代;Pt—元古宙;Ar—太古宙。

表中“—”表示该统计单元该元素的分析数据太少,缺少统计学意义。

Nc—number of analysed composite samples;Ns—number of collected samples.Content units:10-9for Au,Ag,Cd,Hg;10-2for major elements;10-6for others.

Cz—Cenozoic;Mz—Mesozoic;Pz2—Neopaleozoic;Pz1—Eopaleozoic;Pt—Proterozoic;Ar—Archaeozoic.

“—”in the table represents no statistical significance due to insufficiency of number of analyzed data.