radioactive nodules

Radioactive rock!

One of the most unusual features of the coast are these radioactive nodules from Littleham Cove. The radioactive elements almost certainly came from the Dartmoor Granite as it was eroded early in the Triassic period or possibly even in the late Permian. The radiation levels are very low, about the same as an old-fashioned luminous watch. As it oxidised over millions of years, it has turned the surrounding clay from red to grey. 

Some geologists believe that the boundary of the Triassic/Permian rock layer is at the base of the Budleigh Salterton Pebble Beds, which would make the nodules Permian in age.

Find out more on the rocks and pseudofossils pages.

Common name

radioactive nodules

Type

Rocks and Pseudofossils


Strata

Aylesbeare Mudstone

Time period

Triassic

Age

245 mllion years

Where found

Littleham Cove

Found by

Unknown

Museum

Fairlynch Museum, Budleigh Salterton

Accession number

BULFM-nodules 02