This blog focuses upon stylolites which are structures that either form during burial or by later tectonic movements and have a serrated appearance on rock surfaces.
Mudstones can be extensively fractured - this blog looks at some characteristics of fractures inlcuding connected networks and plumose structures in the Cromlix Mudstone, near Stanley, Perthshire, UK.
Pink (Devonian age) mudstones on the bank of the River Tay (Perthshire, UK) are intensively fractured - including joints and larger through going fractures Here we look at some of their characteristics including some splaying geometries.