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地球是具有圈层结构的星球，其中地幔是体积和质量最大的圈层，其物理状态与化学组成对于理解地球的形成与演化过程至关重要。地球发生圈层分异以后，尤其是自板块构造体制启动以来，地幔的化学组成受到各种过程的影响而发生改变，如熔体的抽取可以导致地幔发生亏损，而俯冲的地壳物质则可以导致地幔在元素和同位素上的重新富集。
Preserved Sm-Nd Isotopic Composition as Useful Provenance Indicators in Neoproterozoic Sandstones in the Voltaian Basin, Ghana
Isotope Model Age Provenance Sandstone Voltaian Basin
2013/3/8
The provenance of sandstones derived from theLower Voltaian Kwahu-Morago Group and the Middle Voltaian Oti-Pendjari Group of the Neoproterozoic Voltaian basin are discriminated by their Sm-Nd Isotopic...
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...
Reconstructing the Nd oceanic cycle using a coupled dynamical – biogeochemical model
the Nd oceanic cycle a coupled dynamical biogeochemical model
2010/1/21
The decoupled behaviour observed between Nd isotopic composition (Nd IC, also referred as εNd) and Nd concentration cycles has led to the notion of a "Nd paradox". While εNd behaves in a quasi-conserv...
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...
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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 ...