Hebridean salt marsh shows sea level changes over last 2,500 years

Scientists discovered 2,500 years of geological history when they studied the salt marsh at Gress (Uisdean Nicholson/PA) -

A salt marsh in the Outer Hebrides provides an “almost unbroken record” of sea level changes over the last 2,500 years, scientists have said.

Researchers studying the marsh at Gress on the Isle of Lewis had originally been searching for deposits left by the Storegga tsunami, a massive wave triggered by an underwater landslide off Norway around 8,200 years ago.