Pyrite oxidation and structural problems in the chattanooga (Ohio) shale, east central Kentucky

Abstract

The Chattanooga (Ohio) Shales in Kentucky, USA, are rich in iron sulphides. A number of case studies are presented demonstrating the problems which occur when construction takes places on these black shales, or when they are used as aggregate beneath buildings. In addition, the numerous pipelines which cross the State, transporting gas throughout the USA, are vulnerable to disruption as a consequence of heave and/or acid attack. The need for proper investigations and appropriate mitigation measures is discussed.