Hi everyone, Does anyone know if there is a relationship between density and viscosity or between density and tensile strength of the rock. I am particularly interested in a mathematical relationship. Cheers Salim Al-mahruqi =================================================================== Structural Geology Research T.H. Huxley School of Environment, Earth Sciences and Engineering, Imperial College of Science, Technology and Medicine, Royal School of Mines, Prince Consort Road, London, SW7 2BP Tel: +44 02(0)-7594 6435 Fax: +44 02(0)-7594 6464 E-mail: [log in to unmask] E-mail: [log in to unmask] ===================================================================