Evolution of solutiondolines inferred from cosmogenic^<36>Cl lin calcite
Evolution of solutiondolines inferred from cosmogenic^<36>Cl lin calcite
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从宇宙成因^<36>Cl lin 方解石推断的溶液演化
DOI：
10.1130/g31302.1
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发表时间：
2010
期刊：
影响因子：
5.8
通讯作者：
Keisuke Sueki and YukinoriMatsukura
中科院分区：
文献类型：
--
作者：
Yuki Matsushi;Tsuyoshi Hattanji,Sanae Akiyama;Kimikazu Sasa;TsutomuTakahashi;Keisuke Sueki and YukinoriMatsukura
溶洞发育的定量化为了解岩溶景观的长期演化提供了重要信息。本研究报告的初步结果的长期剥蚀率的调查沿着边坡的溶解漏斗的基础上分析cosmogenic36 Cl在方解石。剥蚀率增加的地形贡献区的大小成比例，从而支持的假设，即碳酸盐岩地形的表面降低的速度是由水收敛在表层岩溶。一个简单的模型的基础上的剥蚀率和贡献面积之间的经验相关性是成功地解释了几个溶解漏斗位于分析漏斗附近的形式。该模型表明，这些解决漏斗，这有不同的直径，开发了类似的时间尺度的顺序为105年。
Quantification of the development of solution dolines provides important information for understanding the long-term evolution of karst landscapes. This study reports the initial results of an investigation of the long-term denudation rates along the side slopes of a solution doline based on analyses of cosmogenic36Cl in calcite. The denudation rates increase in proportion with increasing size of the topographic contributing area, thereby supporting the hypothesis that the rate of surface lowering in carbonate terrains is controlled by water convergence in the epikarst. A simple model based on the empirical correlation between denudation rate and contributing area is successful in explaining the form of several solution dolines located close to the analyzed doline. The model reveals that these solution dolines, which have varying diameters, developed over similar time scales of the order of 105yr.