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bmoney
10-13-2017, 12:14 AM
Feel free to critique/expand/flesh-out details:

R1a1 carriers Indo-Iranians (Mainly EHG (75% Mongolo-Siberid Ma'lta Man, 25% Caucasoid WHG) and some WHG) leave the Srubna Culture go south
- A study on DNA variation among ancient Europeans found that, of the six samples extracted from Srubna culture sites for which a Y-DNA hapogroup could be tested, all belonged to haplogroup R1a, and four of them to subclade R1a-Z93, which is common among modern-day Indo-Iranians
The Srubna offshoot culture makes contact with the Iranoid/Caucasoid BMAC and dominates through horses and war chariots, forming the Indo-Aryans
- The discovery that some loan words from one of these lost sources had also been preserved in the earliest Iranian texts, and also in Tocharian, convinced Michael Witzel and Alexander Lubotsky that the source lay in Central Asia and could be associated with the Bactria–Margiana Archaeological Complex (BMAC). Interestingly, Haplogroup L is considered to originate in the Pamir Knot region of Tajikistan, in the vicinity of the BMAC, but is also found in the IVC area, suggesting that the BMAC and IVC had related peoples
One branch of the BMAC hybridised Indo-Aryans go west to Anatolia to form the Mitanni, another branch goes south to reach the IVC and further mix with the Iranoid IVC peoples – who possibly are already mixed by Oceanian ASI moving north. Again the technological advantage from horses and war chariots leads to domination
IVC speakers (Burusho, Dravidian, Nuristani language related) associated with Haplogroup L and J and closely related to the IVC civilization, introduce substratum to invading dominant Indo-Aryan languages: Retroflex phonemes are now found throughout the Burushaski, Nuristani, Dravidian and Munda families. They are reconstructed for Proto-Burushaski, Proto-Dravidian and (to a minimal extent) for Proto-Munda and are thus clearly an areal feature of the Indian subcontinent. They are not reconstructible for either Proto-Indo-European or Proto-Indo-Iranian, and they are also not found in Mitanni–Indo-Aryan loanwords.. Vedic Sanskrit has retroflex consonants (ṭ/ḍ, ṇ) with about 88 words in the Rigveda having unconditioned retroflexes. Some sample words are Iṭanta, Kaṇva, śakaṭī, kevaṭa, puṇya and maṇḍūka. Since other Indo-European languages, including other Indo-Iranian languages, lack retroflex consonants, their presence in Indo-Aryan is often cited as evidence of substrate influence from close contact of the Vedic speakers with speakers of a foreign language family rich in retroflex consonants. The Dravidian family is a serious candidate since it is rich in retroflex phonemes reconstructible back to the Proto-Dravidian stage
The new formed Ancestral North Indian represented by the Brahmin caste – goes south and east and paternally/Y-dna mediated mixes with the already mixed IVC-Oceanian Dravidian peoples (ANI/ASI) and forms the Middle-Indo Aryan languages built on a Dravidian language base, though this expansion traditionally stops at the Vindhyas – the boundary between Indo-Aryan and Dravidian cultural India
-Some linguists explain this asymmetrical borrowing by arguing that Middle Indo-Aryan languages were built on a Dravidian substratum. These scholars argue that the most plausible explanation for the presence of Dravidian structural features in Indic is language shift, that is, native Dravidian speakers learning and adopting Indic languages. Although each of the innovative traits in Indic could be accounted for by internal explanations, early Dravidian influence is the only explanation that can account for all of the innovations at once

anthroin
10-13-2017, 01:41 AM
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