Human-made Materials Make Up Half of UK Beaches
A recent study has found that up to half of the coarse sediments on some British beaches consist of human-made materials such as brick, concrete, glass, and industrial waste. This phenomenon is driven by climate breakdown, which has led to more frequent and destructive coastal storms that sweep these substances from land into the sea.
The researchers surveyed six sites along the Firth of Forth estuary on Scotland's east coast, using a systematic search method to collect and analyze the sediment. On Granton beach near Edinburgh, they found that up to 50% of the coarse sediments were from human-made sources, primarily swept in from the erosion of nearby industrial sites and waste dumping.
This issue is not unique to Scotland. On Crosby beach in Merseyside, waste from collieries and World War II bombings now forms a large part of what is considered "sand." The Thames estuary's sediments are also thought to be significantly composed of human-made materials, with rounded bricks referred to as "Thames potatoes."
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Start Your News Detox"Beaches are not static landforms – they change. How does a brick become a 'Thames potato'? It's not all just about marine plastics. People don't necessarily know about things like this," said Larissa Naylor, professor of geomorphology and environmental geography at the University of Glasgow and a co-author of the study.
Across the surveyed beaches, an average of 22% of the coarse sediments were classified as "anthropogenic geomaterial," warranting a new scientific category: "anthropogenic sand and gravel" beaches. As climate breakdown continues to accelerate coastal erosion, these changes to the landscape could have unpredictable effects on ecosystems.
"Research like this casts a new light on how human activity is affecting the natural world," Naylor said.









