https://www.sciencedaily.com/releases/2009/05/090527110137.htm
Ancient Mudstones Could Provide Alternative Source Of Energy | ScienceDaily
New research in England reveals that an alternative to oil could be found in ancient sea deposits dating 300 million years ago.
source of energyancientmudstonescouldprovide
https://www.data.gov.uk/dataset/c64855fd-84c4-4f54-b03a-92adddff1990/geochemical-results-from-upper-ediacaran-organic-rich-shales-mudstones-yangtze-craton-south-chi
Geochemical results from upper Ediacaran organic-rich shales / mudstones, Yangtze Craton, South...
https://www.gov.uk/research-for-development-outputs/transmissivity-variations-in-mudstones
Transmissivity variations in mudstones - GOV.UK
transmissivityvariationsmudstonesuk