Interaction between chemical and physical processes in rock weathering

岩石风化中化学和物理过程之间的相互作用

• 批准号: 22740345
• 负责人: YOKOYAMA Tadashi
• 金额: $ 2.75万
• 依托单位: Osaka University
• 依托单位国家: 日本
• 项目类别: Grant-in-Aid for Young Scientists (B)
• 财政年份: 2010
• 资助国家: 日本
• 起止时间: 2010 至 2012
• 项目状态: 已结题
• 来源: https://kaken.nii.ac.jp/grant/KAKENHI-PROJECT-22740345/
• 关键词: 物理風化; 化学風化; 砂岩; 岩石-水相互作用; 風化; 溶解

A sphere was repeatedly collided to the rock in water and the way in which the chemical weathering (dissolution) and the physical weathering (grain detachment) proceed was studied. The experiments using three sandstone samples differing in hardness (Leeb hardness) showed that the rate of the weightloss of the sample, corresponding to the physical weathering rate plus the chemical weathering rate,decreased with increasing rock hardness. The physical weathering rates were approximately 4-371 times greater than the chemical weathering rates determined from the solute concentrations in water. The relative contribution of the physical weathering increased with decreasing rock hardness.

一个球在水中反复碰到岩石，并研究了化学风化（溶解）和物理风化（谷物脱离）的方式。使用三个砂岩样品的实验（Leeb硬度）表明，样品的举重速率与物理风化速率加上化学风化速率相对应，随着岩石硬度的增加而降低。物理风化速率大约比根据水中的溶质浓度确定的化学风化速率高4-371倍。物理风化的相对贡献随着岩石硬度的降低而增加。

项目成果

化学的風化と物理的風化の相互作用

化学风化和物理风化之间的相互作用

• 发表时间: 2011
• 作者: Litasov;K. D.;Shatskiy;A.;Ohtani;E.;横山 正
• 通讯作者: 横山 正

砂岩の風化における化学的過程と物理的過程の相互作用

砂岩风化中化学和物理过程的相互作用

• 发表时间: 2011
• 作者: Litasov;K. D. Ohtani;E.;Shatskiy;A.;井笹純平・渡邊剛・中村隆志・阿部理・野村恵一;横山 正
• 通讯作者: 横山 正