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首页> 外文期刊>Current Science: A Fortnightly Journal of Research >Proterozoic subduction-related and continental rift-zone mafic magmas from the Eastern Ghats Belt, SE India: geochemical characteristics and mantle sources
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Proterozoic subduction-related and continental rift-zone mafic magmas from the Eastern Ghats Belt, SE India: geochemical characteristics and mantle sources

机译：印度东南部东高止山脉带与元古代俯冲有关的大陆裂谷镁铁质岩浆：地球化学特征和地幔源

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摘要

Understanding the origin and growth of continental crust is a fundamental problem in geological sciences. Two distinct ways in which the continental crust grows include horizontal (subduction) and vertical (plume/extension) accretions. As the mantle reservoirs in these two tectonic settings are generated and/or modified by contrasting processes, the erupted melts offer clues on the nature of these divergent mantle sources. Trace element geochemistry is a robust tool to quantitatively model the mantle sources, melting mechanisms and relative roles of mantle and crust in the petrogenesis of magmatic rocks, which ultimately lead us to unravel the origin of continental crust.
机译：了解大陆壳的起源和增长是地质科学的基本问题。大陆壳生长的两种不同方式包括水平（俯冲）和垂直（蓬松/延伸）增生。由于这两种构造环境中的地幔储层是通过对比过程生成和/或改变的，因此喷出的熔体提供了有关这些不同地幔源性质的线索。痕量元素地球化学是定量建模地幔来源，融化机制以及地幔和地壳在岩浆岩成岩作用中的相对作用的强大工具，最终使我们弄清了地壳的起源。

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