Water-rock interactions during the weathering of pelitic schist-its role in the development of landslides
We characterize a weathering zone within pelitic schist, which is one of the typical bedrock types associated with landslides, and discuss the processes and mechanisms of the weathering in relation to landslides by using carefully drilled cores from a landslide body. Oxidation of pyrite and the formation of sulfuric acid at the oxidation front are found to be the dominant chemical processes of weathering. Chlorite is transformed into Al-vermiculite at the oxidation front. Pyrite oxidation and subsequent processes may deteriorate the pelitic schist and foster the rock shearing and the formation of a sliding zone below the oxidation front.
S.Yamasaki M.Chigira
Graduate School of Science, Kyoto University, Japan Disaster Prevention Research Institute, Kyoto University, Japan
国际会议
第十二届水-岩相互作用国际研讨会(P0roceedings of the 12th International Symposium on Water-Rock Interaction)
昆明
英文
1435-1438
2007-07-31（万方平台首次上网日期，不代表论文的发表时间）