Photographic feature: Gypsum nodules at Whitmore Bay, Barry

Gypsum nodules at Whitmore Bay, Barry

This photographic feature discusses the gypsum nodules that can be found at Whitmore Bay, Barry, Wales, UK. Whitmore Bay is a popular sandy beach on the South Wales (UK) coastline. In the west of Whitmore Bay, the cliff sections expose red-brown mudstones and siltstones of the Triassic Branscombe Mudstone Formation (Mercia Mudstone Group, formerly known as the Keuper Marl).

Whitmore Bay, Barry

Whitmore Bay, Barry. Copyright Gareth James (Creative Commons Licence)

 

Within the sub-horizontal mudstones and siltstones are white to pinkish brown gypsum nodules, some of which have dissolved leaving hollows or voids, others have been partially replaced by calcite.… Read the rest

Dr A Brian Hawkins: Pyrite research compilation

Dr A Brian Hawkins

Dr Brian Hawkins, a former Reader in Engineering Geology at the University of Bristol and independent consultant engineering geologist, passed away in January 2016. A remembrance article for Dr Hawkins can be found at the University of Bristol news pages (here).

Research into the engineering implications of pyrite oxidation and sulfur-species

Since at least the 1980s, Dr Hawkins was involved with the examination of, and research into, cases of pyrite heave. He published two books and over 20 papers on the topic of pyrite oxidation and sulfur-species in geological materials.… Read the rest