Никак не отделить - просто не нужно всё смешивать в единую восточную славянщину.
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Вы такой интересный )
А научные работы ваши можно почитать? Я бы с радостью ознакомилась )
Попробуйте самостоятельно ознакомиться с историческими, этнологическими и лингвистическими работами по Новгородчине и её населению на разных этапах. Я имел в виду под [Никак не отделить], что не изучал глубоко ветви M458 со всей территории Новгородчины и могу судить по некоторым комментариям насчёт обнаруженных M458 и по M458 из северодвинского проекта FTDNA.
Например, ...
> According to
www.gentis.ru, R1a-M458 is considered to be a subclade inherent to Slavic and Baltic people, with maximal density in Poland, Lithuania, Czech Republic, Slovakia,Ukraine, and North-Western Russia. Haplogroup R1a-M458 is found mainly in Central and Eastern Europe.
> However, the presence of the R1a-M458 in the Northern Russian area not only supports the view of R1a Y-haplogroup presence for all medieval Russian lands, regardless of princedom borders; but also hints that certain genetic unity with the Central Europe regions could exist (as the most serious concentrations of R1a-M458 are noticed in the western part of the Slavic areal). The western migration is well-discussed in literature. In particular, it is suggested that some of Novgorod Slovens and Krivichi components might have connections in the western part of Slavonic area.
> The town of Radonezh is regarded by many historians as the early offspring of Novgorod Slovens (and Pskov Krivichi). In the same time, Novgorod itself
could be populated partially by Baltic Slavs, being the part of Rurik’s Rus. The Rostov area, to which Radonezh belongs, was also the part of Rurik’s state, so a genetic continuity with Baltic settlements and Pskov-Novgorod is probable. Two medieval R1a-M458 from Usedom (12th–14th centuries, German-Polish border) and from Radonezh (17th century,Russia) support this view. Female H2a1, having counterparts in Norway and Poland, also fits this view.
HAPLOGROUP ANALYSIS FOR A MEDIEVAL RUSSIAN BURIAL OF 16TH–17TH CENTURES IN RADONEZH (MOSCOW AREA).