MTGNexus

Hello all

Just wanted to make sure: is the "Tap: Add a [Color] Mana to your Mana Pool" on artifact lands such as Seat of the Synod considered as an "Activated Ability"?
If I understand correctly, the ability to produce one mana from a land is generally not considered an "Activated Ability". But what about artifact lands?
For instance: if I have Stony Silence in play, can my opponent's Seat of the Synod still produce its Blue mana?

Thank you very much

(Most) activated abilities that produce mana are "mana abilities", which have special timing properties, but otherwise are still, well, activated. Stony Silence prevents the activation of the abilities of Black Lotus, Manalith, Seat of the Synod...