The Indo-European migrations to Armenia
Eastern Anatolia has played a major role in the development of the Neolithic, Chalcolithic, Bronze Age and Iron Age. It is also one of the most complex region for population geneticists to disentangle due to its high level of genetic diversity.
In this thread I would like to propose an answer to the question: When did the Armenian branch of Indo-European languages arrive in Armenia, and who brought it (what haplogroups and subclades) ?
Armenia has sometimes been claimed as the urheimat of the Proto-Indo-European speakers. This could be regarded as partially correct if R1b-M269 originate there before migrating to the North Caucasus and the Pontic Steppe. IMHO, the PIE language only truly came into existence in the steppes, as a hybrid of the languages of R1b and R1a people. In any case, the Armenian branch of IE is not the root. It belongs to the satem branch associated with R1a people. The only problem is that Armenia has about 30% of R1b and only 5% of R1a. Furthermore, according to the Armenian DNA Project, Armenian R1a is split in half between East European Z282 and Indo-Iranian Z93. That presupposes that two separate migrations brought R1a to Armenia, one probably from Russia across the Caucasus, and the other via Iran (perhaps the Mitanni branch).
Behind the 30% of R1b hides an even greater diversity of subclades. Unsurprisingly Armenia has very old subclades like R1b1* (P25) and R1b1a2* (M269), which would confirm it as a possible source of the steppe M269. However the bulk of R1b lineages (about 90% of them) belong to the Balkanic and Greco-Anatolian L23, including a few L584+ and L11+. From a linguistic point of view the IE language closest to Proto-Armenian appears to be Greek, although wit clear Indo-Iranian influences.
The most likely scenario is that the ancient Armenians originated in the southern Balkans in the Bronze Age, as a L32 offshoot of R1b, then migrated across Anatolia. The language was later satemised due to the long influence of Indo-Iranian languages, for example during the Mitanni period (c. 1500-1200 BCE) and during the Achaemenid Empire (550–330 BCE) when the region was part of the Satrapy of Armenia (the first historical state to be called 'Armenia'), when R1a-Z93 was introduced to Armenia.
The East European R1a-Z282 was probably brought by the Cimmerians, who are recorded to have settled around Lake Van in the Armenian Highland in the 8th century BCE.
kura-Arax depression 库拉-阿拉斯低地
* There is a very strong archaeological evidence that the most newcomers entered Armenia from the East not the West. There are two main routs from the east. The Kur valley and the Arax valley. Starting 2800 BC Kura-Arax culture started to collapse from a pressure from the Eastern side (Daghestan later they moved by Kur valley). The newcomers bring with them a culture that can be associated with early IE. Perhaps they moved also to Anatolia and founded the Anatolian languages。 I myself support this theory.
库拉-阿拉斯低地是阿塞拜疆的低地,位于该国中部里海西岸,处于库拉河和阿拉斯河的河谷,长约250公里、宽约150公里, 咸海-里海盆地的一部分。
In the Chinese ancient classic "山海经‘, (not correctly translated as the Classic of Mountains and Seas ),there are two routes from China going West , one is exactly following the route revealed by the above scholar , from China to Azov Sea, to Aral Sea, Caspin Sea and Black sea .The name of the Great Caucasos in this book is 大崦嵫山, Da-yan-zi mountain。The tribes here are herders of goats and sheep. According to a Chinese independent researcher Mr. Pulu(濮鲁), who is a geologist and engineer and retranslated the book, the book was compiled around Xia (夏朝)dynasty, which is dated variously as after 2500BC , and 2100BC. or 2070BC /2030BC —about 1600BC/. In the book’ s second volumn , the West mountains ( 第二卷 西山经)various routes to the west are described and the tribes ,their names , way of life are described in very brief and ancient text, which is a mixture of ancient Pu language (濮语) and Han Chinese language. (汉语) Other Volumns (total 18 volumns of this book )concerning the west are "海外西经‘, ’海内西经‘, “大荒西经’。[ my paraphrases:: overseas in the west , and west land , ] The west end of the book is the Causasos mountain . It also writes down the old names of many rivers , cities and mountains during that time .