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硫化物Rb-Sr同位素定年研究进展
Rb-Sr同位素 定年 硫化物 铅锌矿床
2012/7/20
针对金属矿床成矿年代确定混乱的问题，国内外许多矿床学家和同位素地球化学家对金属矿物常规同位素定年方法进行了有益的探索研究，尤其是对于矿石矿物以闪锌矿、方铅矿和黄铁矿为主的铅锌矿床，硫化物矿物Rb-Sr同位素定年方法显示出了其独特的优势。结合近几年开展的工作，总结国内外硫化物Rb-Sr同位素定年研究取得的成果、闪锌矿中Rb、Sr的赋存状态与定年机理以及定年适应性问题。采用闪锌矿Rb-Sr同位素组成数...
Rb和Sr在赋存矿物和表生地球化学行为等方面存在显著差异，因而各种记录体中的Rb/Sr比值被广泛应用于古气候/古环境研究。湖泊沉积物中的Rb、Sr主要包括2部分来源：一是流域物理侵蚀直接带来的陆源碎屑组分，在沉积物中多以残渣态（碎屑矿物）形式存在；二是流域化学风化带来的溶解态物质，在湖泊水体中通过物理吸附、化学沉淀和生物吸收等过程沉降至湖泊沉积物中，多以非残渣态形式存在（包括可交换态、碳酸盐结合态...
Geochemical and Sr-Nd Isotopic Characteristics of Post-Collisional Calc-Alkaline Volcanics in the Eastern Pontides (NE Turkey)
earth siences rocks gneisses
2011/3/22
Major, trace element, K-Ar age and Sr-Nd isotopic data are presented for the Eocene Torul volcanics in the eastern Pontide orogenic belt (NE Turkey). The studied rocks are composed of basaltic andesit...
Impact of seawater pCO2 on calcification and Mg/Ca and Sr/Ca ratios in benthic foraminifera calcite: results from culturing experiments with Ammonia tepida
seawater pCO2 calcification and Mg/Ca and Sr/Ca ratios benthic foraminifera calcite culturing experiments Ammonia tepida
2010/1/21
Evidence of increasing concentrations of dissolved carbon dioxide, especially in the surface ocean and its associated impacts on calcifying organisms, is accumulating. Among these organisms, benthic a...
U-Pb zircon SHRIMP ages,geochemical and Sr-Nd isotopic compositions of the Early Cretaceous I-type Sarıosman pluton,Eastern Pontides,NE Turkey
SHRIMP dating Sarı osman pluton mineral chemistry I-type Sr-Nd isotope geochemistry eastern Pontides
2010/1/11
The petrogenesis and U-Pb SHRIMP zircon ages of the Late Cretaceous Sarıosman pluton in the Eastern Pontides is investigated by means of whole-rock Sr-Nd isotope data with field, petrographic and...
期刊信息
篇名
Sm-Nd and Rb-Sr isotopic chronology and cooling history of ultrahigh pressure metamorphic rocks and their country rocks at Shuanghe in the Dabie Mountains, central China.
语种
英文
撰写或编译
撰写
作者
Li ...