Vikings were Working with Wood in Newfoundland 1000 Years Ago

Viking Vinland, Dendrochronology, & Solar Storm-impacted Wood

Dr. James J. S. Johnson

For how long did the Greenland Vikings, after Leif Eiriksson’s original voyage to North American shores, continue to come and to dwell in “Vinland the Good”, some where on North America’s northeastern shorelands? A couple of decades, at least, according to new evidence reported in Nature.1,2

The new evidence comes from old samples. Dozens of radiocarbon dates taken from wooden artifacts excavated at L’Anse aux Meadows [in Newfoundland] in the 1960s showed the site was about 1,000 years old. But radiocarbon dating was in its infancy at the time, and the margin of error was often measured in decades or even centuries.1

Andrew Curry, footnote 1

Petra Doeve photogrpah / Microscope image of Viking-worked wood found at L’Anse aux Meadows.

Now, it looks like Greenlanders migrated seasonally—if not settling for entire years—for at least 21 years after Leif’s historic voyage of discovery in A.D.1000, according to recent dendrochronology data that links to solar storm indicators.

In A.D. 993, a storm on the sun released an enormous pulse of radiation that was absorbed and stored by trees all over the Earth. Now, that solar event has proved a critical tool in pinpointing an exact year the Vikings were present in the Americas.1

Andrew Curry, footnote 1

Historical records, cross-indexed by corroborating forensic science-verified evidences, report that Leif “the Lucky” Eiriksson and his Greenland Viking crew visited “Vinland the Good”—apparently somewhere at or near Newfoundland, New Brunswick, Labrador, and/or Maine—during the year A.D.1000.3 

Because 11th century Greenland was virtually devoid of timber—which was always needed for many purposes—the unlimited supply of timber, in Vinland and in nearby Markland (today’s Labrador), attracted repeated voyages by Greenlanders’ knarr longships.  Unsurprisingly, these hungry Vikings enjoyed Vinland’s coastal salmon, which they reported as larger than those in Greenland’s coastal waters.3

[Viking ship at sea]

So, seasonal visits continued, to acquire valuable timber, anadromous salmon in tidewaters and coastal streams, as well as easily-harvested fruit (including wild grapes), as well as multi-year settlements, sailing weather permitting. 

But the climate was slowing changing in North Atlantic regions, as the Medieval Warm Period shifts slowly but surely into the Little Ice Age.  Accordingly, as the number of ice-free travel months shrunk—between Greenland and North American shorelands—the opportunities for safe travel between Vinland and Greenland dropped.3

But some are skeptical that Greenland Vikings ever visited Vinland so frequently, after Leif’s original visit.  That skepticism, however, is now challenged by a combination of dendrochronology (calculating timeframes according to tree ring analysis3) linked to empirically observable marks of historic solar storm activity.1

Now, thanks to that cosmic storm in [A.D.] 993, researchers can assuredly say that Vikings were working away at their tiny outpost in the north Atlantic exactly 1,000 years ago, in [A.D.] 1021, according to a study published today [i.e., 10-20-AD2021] in the journal Nature.1

Transatlantic exploration took place centuries before the crossing of Columbus. Physical evidence for early European presence in the Americas can be found in Newfoundland, Canada [at L’Anse aux Meadows] … Here we provide evidence that the Vikings were present in Newfoundland in AD 1021. We overcome the imprecision of previous age estimates by making use of the cosmic-ray-induced upsurge in atmospheric radiocarbon concentrations in AD 993 [by adding 28 years, inferred by 28 tree rings beyond the tree ring “spike” that represents the AD993 solar storm].2

Margot Kuitems, et al., footnote 2

The scientists described their research methodology as follows:

In our study, we use an advanced chronometric approach to anchor Norse activity in the Americas to a precise point in time. Exact-year 14C results can be achieved by high-precision accelerator mass spectrometry (AMS) in combination with distinct features in the atmospheric 14C record. Measurements on known-age (dendrochronological) tree rings show that 14C production usually fluctuates by less than 2‰ per year. However, such time series have also revealed that production of the isotope rapidly increased in the years AD 775 and AD 993 by about 12‰ (which manifests as a decrease of about 100 14C yr)24 and about 9‰ (about 70 14C yr), respectively. These sudden increases were caused by cosmic radiation events, and appear synchronously in dendrochronological records all around the world. By uncovering these features in tree-ring samples of unknown age, it is possible to effect precise pattern matching between such samples and reference series. In so doing, if the bark edge (or more specifically, the waney edge) is also present, it becomes possible to determine the exact felling year of the tree. Moreover, it is not necessary to have 14C dates for the outermost growth rings, because once the ring that contains the AD 993 anomaly has been detected, it simply becomes a matter of counting the number of rings to the waney edge. On the basis of the state of development of the earlywood and latewood cells in the waney edge, one can even determine the precise felling season.2

Margot Kuitems, et al., footnote 2

Of course, this specific set of data observations, as so analyzed, only established the timeframe (almost to the year, assuming that each year is represented by one and only one growth ring4) for when the trees were felled (and thus stopped producing growth rings), presumably by Vinland-visiting Vikings, that were used to produce the wood that was dendrochronologically analyzed 1000+ years later.  Obviously, the Vikings who visited Vinland felled more than one tree—and did so over a series of years.

[map showing sea routes used by Vikings, Ca. A.D.1000 & after]

So, the researchers’ primary conclusion is justified, by their use of some empirical science to corroborate historical facts previously established by forensic science:

We provide evidence that the Norse were active [as shown by tool-worked wood] on the North American continent in the year AD 1021. This date offers a secure juncture for late Viking chronology. More importantly, it acts as a new point-of-reference for European cognisance of the Americas … In addition, our research demonstrates the potential of the AD 993 anomaly in atmospheric 14C concentrations for pinpointing the ages of past migrations and cultural interactions. Together with other cosmic-ray events, this distinctive feature will allow for the exact [sic] dating of many other archaeological and environmental contexts.2

Margot Kuitems, et al., footnote 2

As has been reported previously by this author, judging assumptions is very important for learning about no-longer-observable events of the past, because apart from a reliable eyewitness it is easy to guess amiss.5 

[Viking settlement reënactment]

Thus, in this case—involving Viking tool-worked wood remains, the dendrochronology analysis, standing alone, could be easily misinterpreted by wrong assumptions. However, the greater context of forensic science factors—including review of Norse Viking coin evidence (found in Maine), the Viking spindle whorl (also found at L’Anse aux Meadows), corroborative Icelandic sagas, as well as reports of Markland’s features by other European contemporaries, etc.—is needed to ensure an adequately contextualized evidence-weighed analysis.3

Meanwhile, the ultimate illustration of this evidentiary principle is the Holy Bible itself, God’s gift of truth to mankind—because apart from the Bible we would not know Who the Lord Jesus Christ is.  

And knowing the truth about Christ—our Creator and our Redeemer—is absolutely critical for life here and hereafter.

And this is life eternal, that they might know Thee the only true God, and Jesus Christ, whom Thou hast sent. 

John 17:3

What will future generations learn about us, when they find evidence about how we lived our lives upon Earth? May God guide us so that our Lord Jesus Christ is honored by what we do now, and by the “footprints” that we “leave behind”, when it is our turn to enter eternity.

[Vikings arriving at newly discovered shoreland]


1.Curry, Andrew. 2021. “Ancient Solar Storm Pinpoints Viking Settlement in Americas Exactly 1,000 Years Ago”, National Geographic, posted on Technology News (Oct. 20, 2021), at .

2.Margot Kuitems, Birgitta L. Wallace, et al., 1021. Evidence for European Presence in the Americas in AD1021. Nature (10-20-2021) .

3.Haywood, John. 1995. The Penguin Historical Atlas of the Vikings (Penguin), 98-99. See also Magnusson, M., & H. Pálsson, translators/editors, The Vinland Sagas: The Norse Discovery of America (Penguin, 1965), pages 47-72 (Glænlendinga Saga) & pages 73-105 (Eirik’s Saga). On Leif’s contribution to Viking Christianity and Vinland’s exploration, see Johnson, J. J. S. 2021. “Leif Eiriksson, Exemplifying Both the Genesis Mandate and the Great Commission: Filling the Earth in Vinland, plus Evangelizing Kinfolk in Viking Age Greenland” presented to the Norwegian Society of Texas (Dallas, Texas, October 16, 2021 [Althing meeting]; 6 pages), plus Isaiah 42:10 & 40:12.

4.Johnson, James J. S. 2020. Children’s Tree Book Rings of Evolutionary Agenda. Creation Science Update (6-8-2020), posted at .

5.Johnson, James J. S. 2018. Something Fishy about Radiocarbon-Dating Viking Bones. Creation Research Society Quarterly. 54(3):213-216.

[Leif Eiriksson (statue) with Viking ship]

Dr. James J. S. Johnson (CNHG = specialist in Nordic History & Geography, certified by the Norwegian Society of Texas) studies and teaches Viking History, among other subjects.  Jim has happily served as onboard lecturer (on history & geography, sometimes including Viking history) for 9 different cruise ships, including the Norwegian Dream (visiting Iceland & Newfoundland), Marco Polo (visiting Finland, Sweden, & other Viking lands), and Jewel of the Seas (visiting Norway, Sweden, Denmark, Estonia, Russia, etc.).               ><> JJSJ          

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