首页> 外文期刊>Earth Surface Processes and Landforms: The journal of the British Geomorphological Research Group >Estimation of episodic exfoliation rates of rock sheets on a granite dome in Korea from cosmogenic nuclide analysis
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Estimation of episodic exfoliation rates of rock sheets on a granite dome in Korea from cosmogenic nuclide analysis

机译:利用宇宙成因核素分析估算韩国花岗岩穹顶上岩石片的脱落速率

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摘要

We have measured concentrations of cosmogenic Be-10 and Al-26 produced in situ at bare bedrock surfaces of successive sheets developing on a granite dome in Korea and calculated the exfoliation rate of sheeting joints. The exfoliation rate was obtained using a simple model in which the sheeting joints experience intermittent denudation, i.e. peeling off along the bedrock face. We find that the average exfoliation (erosion) rate of the episodic peeling-off process is 5.6 cm/ka(-1). The analysis is useful for understanding the evolution of granite sheeting structures on this dome in Korea. Copyright (c) 2006 John Wiley & Sons, Ltd.
机译:我们测量了在韩国花岗岩穹顶上连续开采的裸露基岩表面原位产生的宇宙成因的Be-10和Al-26的浓度,并计算了薄片接缝的剥落率。剥落率是使用一个简单的模型获得的,在该模型中,覆膜接缝经历了间歇剥蚀,即沿基岩表面剥落。我们发现,偶发剥离过程的平均剥落(侵蚀)速率为5.6 cm / ka(-1)。该分析对于了解韩国这个穹顶上的花岗岩薄片结构的演变非常有用。版权所有(c)2006 John Wiley&Sons,Ltd.

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