Newly calculated in-situ stress magnitude data has improved the UK database of this important data, vital for understanding how rocks may behave under hydraulic fracturing or "fracking." As this process is controversial in the UK, all new data adds to our understanding of the potential risks of this process. The mode of deformation that rocks experience are highly dependent upon their detailed geology.
New data from the highly variable UK Coal Measures Group highlights the degree of lithological control on these processes
