A team of researchers has confirmed a remarkable discovery on Mount Everest: marine fossils about 450 million years old found at more than 13,000 feet above sea level. The finding shows that the highest point on Earth was once the floor of an ancient tropical ocean millions of years before the mountain itself existed.
The rocks discovered near the summit belong to a formation known as the Qomolangma Limestone, a type of sedimentary rock originally formed in marine environments. Inside these rocks, scientists have identified remains of ancient organisms such as crinoids, trilobites, cephalopods, and brachiopods, creatures that once inhabited warm, shallow seas.
These animals lived in the ancient Tethys Ocean, which covered much of the region hundreds of millions of years ago. Over time, the marine sediments that buried their remains eventually transformed into the rocks that now make up the summit of Everest.
The theory of continental drift
The explanation lies in the movement of tectonic plates. About 50 million years ago, the Indian continental plate began colliding with the Eurasian plate. The impact was so powerful that it folded and uplifted massive layers of marine sediments, ultimately forming the Himalayan mountain range.
This geological process continues today. The Himalayas are still rising by about a little more than a third of an inch each year because of the constant pressure between the two plates.
The presence of these marine fossils high on Everest is also one of the pieces of evidence supporting the theory of continental drift proposed by German scientist Alfred Wegener in 1915. At the time, the idea that continents could move was met with skepticism. However, discoveries like this eventually demonstrated that the planet’s surface is constantly changing.
Today, every fragment of limestone at the summit of Everest stands as a witness to that distant past, a reminder that what is now known as the “roof of the world” was once a thriving seafloor.
