Vikings arrived in North America 1,000 years ago, scientists say

New dating technique reveals Norse people reached New World hundreds of years before Columbus

The Viking replica ship 'Islendingur+'arrives in the fishing village of L'Anse aux Meadows in Newfoundland. Reuters

Long before Christopher Columbus crossed the Atlantic, eight timber-framed buildings covered in sod stood on a terrace above a peat bog and stream at the northern tip of Canada's island of Newfoundland, evidence that the Vikings had reached the New World first.

But precisely when the Vikings journeyed to establish the L'Anse aux Meadows settlement had remained unclear — until now.

Scientists this week said a new type of dating technique using a long-ago solar storm as a reference point revealed that the settlement was occupied in 1021 AD, exactly a millennium ago and 471 years before the first voyage of Columbus. The technique was used on three pieces of wood cut for the settlement, all pointing to the same year.

The Viking voyage represents multiple milestones for humankind. The settlement offers the earliest-known evidence of a transatlantic crossing.

It also marks the place where the globe was finally encircled by humans, who thousands of years earlier had trekked into North America over a land bridge that once connected Siberia to Alaska.

“Much kudos should go to these northern Europeans for being the first human society to traverse the Atlantic,” said geoscientist Michael Dee of the University of Groningen in the Netherlands, who led the study published in the journal Nature.

The Viking Age is traditionally defined as 793-1066 AD, presenting a wide range for the timing of the transatlantic crossing.

It was not local indigenous people who cut the wood at the settlement site because there is evidence of metal blades, which they did not possess. Getty Images

Ordinary radiocarbon dating — determining the age of organic materials by measuring their content of a particular radioactive isotope of carbon — proved too imprecise to date L'Anse aux Meadows, which was discovered in 1960, although there was a general belief it dated back to the 11th century.

The new dating method relies on the fact that solar storms produce a distinctive radiocarbon signal in a tree's annual growth rings. It was known there was a significant solar storm — a burst of high-energy cosmic rays from the sun — in 992 AD.

In all three pieces of wood examined, from three different trees, 29 growth rings were formed after the one that bore evidence of the solar storm, meaning the wood was cut in 1021, said University of Groningen archaeologist Margot Kuitems, the study's first author.

It was not local indigenous people who cut the wood because there is evidence of metal blades, which they did not possess, Mr Dee said.

The length of the occupation remains unclear, though it may have been a decade or less, and perhaps 100 Norse people were present at any given time, Mr Dee said. Their structures resembled Norse buildings in Greenland and Iceland.

Oral histories called the Icelandic Sagas depict a Viking presence in the Americas. Written down centuries later, they describe a leader named Leif Erikson and a settlement called Vinland, as well as violent and peaceful interactions with the local peoples, including capturing slaves.

The 1021 date roughly corresponds to the saga accounts, Mr Dee said, adding: “Thus it begs the question, how much of the rest of the saga adventures are true?”

Local men dressed as Vikings pose in the streets of Lerwick. Jeff J Mitchell / Getty Images

The traditional festival of fire is known as ‘Up Helly Aa’. The spectacular event takes place annually on the last Tuesday of January. Jeff J Mitchell / Getty Images

A Viking longboat burns during the annual Up Helly Aa festival in Lerwick. Andy Buchanan / AFP Photo

Locals dressed as Vikings prepare to march through the streets of Lerwick. Jeff J Mitchell / Getty Images

The climax of the day comes with participants in full costume hauling a Viking longboat. Jeff J Mitchell / Getty Images

A Viking takes a break. Andy Buchanan / AFP Photo

Men dressed as Vikings march through Lerwick. Andy Buchanan / AFP Photo

A man and a boy dressed as Vikings eat breakfast, as you know, being a Viking for the day requires a full stomach. Andy Buchanan / AFP Photo

A man leads the march of 1000 men dressed as Vikings. Jeff J Mitchell / Getty Images

Young and old dress up as a Viking for the occasion. Andy Buchanan / AFP Photo

Participants dressed as Vikings prepare to participate in the annual Up Helly Aa festival in Lerwick, Shetland Islands, on January 28, 2014. Up Helly Aa celebrates the influence of the Scandinavian Vikings in the Shetland Islands and culminates with up to 1,000 ‘guizers’ (men in costume) throwing flaming torches into their Viking longboat and setting it alight later in the evening. Andy Buchanan / AFP Photo

The torches of the Jarl Squad are lit. Jeff J Mitchell / Getty Images

The Jarl Squad march around a Viking Longship before torching it. Jeff J Mitchell / Getty Images