Radiocarbon evidence for the presence of mice on Madeira Island (North Atlantic) one millennium ago
Proceedings of the Royal Society
2014
"mtDNA haplotypes from current mouse populations of Madeira show similarities with those of Scandinavia and northern Germany, and it has been reported that Vikings transported house mice to the places they reached. All these data suggest, but do not prove, a relationship between the Viking voyages and the presence of Mus on Madeira."
https://royalsocietypublishing.org/doi/full/10.1098/rspb.2013.3126
Climate change facilitated the early colonization of the Azores Archipelago during medieval times
PNAS
October, 2021
- Unambiguous evidence for widespread human disturbance of this archipelago starting between 700 and 850 CE, when temperatures were higher than average, and the westerly winds were weaker, facilitating arrivals to the archipelago from northeastern Europe and inhibiting exploration from southern Europe.
- archaeological and genetic research suggesting the Norse were the first to colonize the Azores Archipelago.
- Presence of the archipelago on maps, before the Portuguese discovery.
https://www.pnas.org/doi/10.1073/pnas.2108236118
Irish-style megalithic monuments in the Azores
https://novoscriptorium.com/2019/05/01/megalithic-monuments-of-the-azores/
I don't know why they didn't look for artifacts buried in these places, it is known that the Irish explored the North Atlantic with leather boats and seem to have been to Iceland.
Proceedings of the Royal Society
2014
"mtDNA haplotypes from current mouse populations of Madeira show similarities with those of Scandinavia and northern Germany, and it has been reported that Vikings transported house mice to the places they reached. All these data suggest, but do not prove, a relationship between the Viking voyages and the presence of Mus on Madeira."
https://royalsocietypublishing.org/doi/full/10.1098/rspb.2013.3126
Climate change facilitated the early colonization of the Azores Archipelago during medieval times
PNAS
October, 2021
- Unambiguous evidence for widespread human disturbance of this archipelago starting between 700 and 850 CE, when temperatures were higher than average, and the westerly winds were weaker, facilitating arrivals to the archipelago from northeastern Europe and inhibiting exploration from southern Europe.
- archaeological and genetic research suggesting the Norse were the first to colonize the Azores Archipelago.
- Presence of the archipelago on maps, before the Portuguese discovery.
https://www.pnas.org/doi/10.1073/pnas.2108236118
Irish-style megalithic monuments in the Azores
https://novoscriptorium.com/2019/05/01/megalithic-monuments-of-the-azores/
I don't know why they didn't look for artifacts buried in these places, it is known that the Irish explored the North Atlantic with leather boats and seem to have been to Iceland.