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北阿尔金恰什坎萨依花岗闪长岩的锆石SHRIMP U-Pb定年及其地质意义

才来吴, 繁聪孟, 仁灯史, 经绥杨, 建新张, 海兵李, 学祥戚, 松永陈

来源Chinese Science Bulletin (Chinese Version)

年份2005

DOI10.1360/csb2005-50-6-571

原文https://doi.org/10.1360/csb2005-50-6-571

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摘要与影响

摘要 · 完整

恰什坎萨依花岗闪长岩虽然经历了强烈的片麻岩化作用, 但其铝饱和指数(A/CNK)为0.81~0.99, Na2O/ K2O>1, TiO2<1.0%, 轻稀土富集, 分馏程度高, 重稀土富集程度较低, 分馏系数小, Eu弱负异常或无异常, 微量元素Ba, Ti为负异常及在微量元素构造环境判别图解上样品点落在岛弧型花岗岩区等都展示出岛弧型花岗岩的典型特征. 阴极发光图像反映锆石内部存在清晰的韵律生长纹, 无残留锆石晶核和新生长的环边结构, U, Th含量分别变化于574~870和279~556 μg/g之间, Th/U值在0.52~0.68之间, 显示出岩浆锆石性质. 锆石SHRIMP U-Pb定年结果为481.5±5.3 Ma, 代表花岗闪长岩侵位时代, 与北祁连岛弧火山岩带的形成时代一致, 证实了该区存在早古生代岛弧岩浆活动.

逐年被引趋势

210

216

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0.64

领域内被引倍数
同类平均 = 1

前 20%

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物理

Geochemistry and Elemental Analysis

Geological and Geochemical Analysis · Geological and Geophysical Studies

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Two phases of Mesozoic north‐south extension in the eastern Altyn Tagh range, northern Tibetan Plateau

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Major and trace element geochemistry of plutonic rocks from Francistown, NE Botswana: evidence for a Neoarchaean continental active margin in the Zimbabwe craton

A.B. Kampunzu · Lithos · 2003

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An evaluation of the Rb vs. (Y + Nb) discrimination diagram to infer tectonic setting of silicic igneous rocks

Hans‐Jürgen Förster, G. Tischendorf, Robert B. Trumbull · Lithos · 1997

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The distribution, geochronology and geochemistry of early Paleozoic granitoid plutons in the North Altun orogenic belt, NW China: Implications for the petrogenesis and tectonic evolution

Lingtong Meng, Bailin Chen, Nina Zhao · Lithos · 2016

被引 45

Two contrasting accretion v. collision orogenies: insights from Early Paleozoic polyphase metamorphism in the Altun–Qilian–North Qaidam orogenic system, NW China

Jianxin Zhang, C. G. Mattinson, Shengyao Yu · Geological Society London Special Publications · 2018

被引 35

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Weihang Bao, Xiaoping Long, Chao Yuan · Lithos · 2016

被引 29

按被引量排序，此处列出前 3 条

研究论文开放获取

北阿尔金恰什坎萨依花岗闪长岩的锆石SHRIMP U-Pb定年及其地质意义

才来吴, 繁聪孟, 仁灯史, 经绥杨, 建新张, 海兵李, 学祥戚, 松永陈

来源Chinese Science Bulletin (Chinese Version)

年份2005

DOI10.1360/csb2005-50-6-571

原文https://doi.org/10.1360/csb2005-50-6-571

阅读操作

确认中

在文库中上传 PDF 后可生成中文音频讲解。

摘要与影响

摘要 · 完整

逐年被引趋势

210

216

关键指标

被引次数 · OpenAlex

0.64

领域内被引倍数
同类平均 = 1

前 20%

引用位次
同领域 · 同年份 · 同类型

参考文献

Google Scholar 与 OpenAlex 的被引统计范围不同，数值存在差异属正常。

AI 辅助阅读

依据：摘要

论文问答

当前基于摘要回答

可就本文提问；依据不足时会说明。

学术脉络

学科主题

物理

Geochemistry and Elemental Analysis

Geological and Geochemical Analysis · Geological and Geophysical Studies

参考文献 18

Two phases of Mesozoic north‐south extension in the eastern Altyn Tagh range, northern Tibetan Plateau

Xuanhua Chen, An Yin, George E. Gehrels · Tectonics · 2003

被引 124

Major and trace element geochemistry of plutonic rocks from Francistown, NE Botswana: evidence for a Neoarchaean continental active margin in the Zimbabwe craton

A.B. Kampunzu · Lithos · 2003

被引 74

An evaluation of the Rb vs. (Y + Nb) discrimination diagram to infer tectonic setting of silicic igneous rocks

Hans‐Jürgen Förster, G. Tischendorf, Robert B. Trumbull · Lithos · 1997

被引 276

此处列出前 3 条

引用本文 8

The distribution, geochronology and geochemistry of early Paleozoic granitoid plutons in the North Altun orogenic belt, NW China: Implications for the petrogenesis and tectonic evolution

Lingtong Meng, Bailin Chen, Nina Zhao · Lithos · 2016

被引 45

Two contrasting accretion v. collision orogenies: insights from Early Paleozoic polyphase metamorphism in the Altun–Qilian–North Qaidam orogenic system, NW China

Jianxin Zhang, C. G. Mattinson, Shengyao Yu · Geological Society London Special Publications · 2018

被引 35

Paleozoic adakitic rocks in the northern Altyn Tagh, northwest China: Evidence for progressive crustal thickening beneath the Dunhuang Block

Weihang Bao, Xiaoping Long, Chao Yuan · Lithos · 2016

被引 29

按被引量排序，此处列出前 3 条