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They were examined using non-destructive X-ray fluorescence (XRF) to compare the obsidian with known sources in northeastern Siberia.
The geochemistry of the Zhokhov artefacts shows with 90 per cent confidence that it came from a source at Cape Medvezhiy on Lake Krasnoe in Chukotka.
Es asombroso que hayan encontrado esa obsidiana en ese lugar tan vasto. Raúl Your ancestors were quite the travelers and also very innovative.
Sin importar si recorrió 700 o 7000 km, lo asombroso es en la época que quedó perdida hasta hoy en ese territorio. The photo of rounded obsidian rocks look more like river rocks that have tumbled until rounded.
I suspect that these events and objects are much, much older, likely predating the catastrophe of 13,000 years ago.
At that time the geographic North Pole was in southwestern Greenland and world-wide climatic conditions were accordingly.
The article states: 'In winter time, such a journey required particular skills and technology, such as skiing or the use of snow shoes, both of which were common elsewhere in the Arctic from at least the Early Holocene.
’It is quite surmountable in early spring dog sledding.' The experts believe ‘it is possible that some types of ‘trade hub’ existed in the Siberian Arctic for the exchange of valuable resources, such as stone raw materials, furs and other items’.
It was around 7,800 years ago that the the territory of Zhokhov became detached from the mainland.
‘The most suitable season for the use of animals for transport during the occupation of the Zhokhov site would probably have been in early spring (March and April), when snow is still solid and the days are longer than in the winter.
Indeed, today, the popular Beringia dog-sled race — a super-long-distance expedition of over 1000 km —normally takes place during this time of the year.
Winter temperatures in the area of interest, were probably like the southern United States today, so we can rule out dog-sledding.