Nano structure of slickenside and its formation mechanism on faults

2015 Fiscal Year Final Research Report

• Project/Area Number: 25610162
• Research Category: Grant-in-Aid for Challenging Exploratory Research
• Allocation Type: Multi-year Fund
• Research Field: Geochemistry/Cosmochemistry
• Research Institution: The University of Tokyo
• Principal Investigator: Kagi Hiroyuki 東京大学, 理学(系)研究科(研究院), 教授 (70233666)
• Co-Investigator(Kenkyū-buntansha): ANDO Jun-ichi 広島大学, 大学院理学研究科, 教授 (50291480) ; YOSHINO Toru 東京都立産業技術研究センター, 開発本部, 研究員 (90614545)
• Project Period (FY): 2013-04-01 – 2016-03-31
• Keywords: 原子間力顕微鏡 / 断層 / 鏡肌 / 表面

Outline of Final Research Achievements

The formation mechanism of slickenside has been unclear for a long time. This study is aimed to observe the surface structure of natural slickenside and experimentally obtained rock sample using atomic force microscope. Our observation clarified that the natural slickenside and laboratory-made slickenside have similar nano particles. Moreover, the size of nanoparticle has a strong correlation with the pressure between the rocks. This study throws a new light on the formation mechanism of slickenside from surface observation.

Free Research Field

地球化学