Ancient Quenya Phonetics P31: [ɣ] became [j] between liquids and [e], [a]

Ancient Quenya Phonetics P31: [ɣ] became [j] between liquids and [e], [a]

Part 30 has already been posted here:

AQ. [ɣ] became [j] between liquids and [e], [a]; [{rl}ɣ{ae}] > [{rl}j{ae}]

In Ancient Quenya, any voiced velars spirants ʒ [ɣ] between liquids r, l and low vowels e, a developed into the semi-vowel y [j]. This was mentioned as a specialized development in both the Outline of Phonetic Development [OP1] from the 1930s and the Outline of Phonology [OP2] from the 1950s:

while lg, rg > lʒ, rʒ > ll, rr; but lgē̆, rgē̆ > lye, rye (OP1: PE19/46)
The products of rg, lg; rgw, lgw were in (N.) TQ rr, ll (but rgē̆, lgē̆ > rye, lye); rw, lw (OP2: PE19/93).

This sound change was similar to how [ɣ] became [j] between [i], [e] and a vowel. The quotes above indicate this sound change only occurred before the vowel e, but all the attested examples show the same development before the vowel a:

  • phelgā > Q./ᴹQ. felya “mine; cave” (PE17/118; Ety/PHÉLEG).
  • ᴹ✶targā > ᴹQ. tarya “tough, stiff” (Ety/TÁRAG).

There are examples before other vowels where lg followed its more usual development to ll:

Note that in the 1930s, this may have been a Lindarin [Vanyarin] only development, see the entry on how: [rɣ], [lɣ] became [rr], [ll] for discussion.

Conceptual Development: In the 1910s and 1920s, it seems that g between l and a became ll, and this was the usual development of lg in this conceptual period: