Rwy wedi cael hyd i 'orogeni' yn Cysgeir ond byddwn i'n ddiolchgar am unrhyw gyngor ynglyn â'r ddau derm arall.

Diolch

Oddi wrth/From: Huw Garan [mailto:[log in to unmask]]
Anfonwyd/Sent: 15 April 2008 13:56
At/To: 'Discussion of Welsh language technical terminology and vocabulary'
Pwnc/Subject: Rhai termau daeareg

Rwy'n cyfieithu disgrifiad o SoDdGA Porth Sain Ffraid yn Sir Benfro ac mae'n llawn termau daearegol. Oes gan rywun syniad beth yw'r termau sydd wedi'u hamlygu, os gwelwch yn dda?

" Cliff and foreshore outcrops provide critical exposures of the Johnston Thrust, one of the most important structures formed during the Variscan mountain building episode (orogeny) in South Wales "

Diolch yn fawr

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