The current description of Geologic Attunement don't specify if tremorsense can be used only in earth and stone terrain of if its also valid for others terrains. The sentence makes clear the that the aura turn earth and stone into difficult terrain but don't clearly says that's if this is valid for tremorsense too because they are sentences separated by a comma and an "and":
You become in tune with the earth and stone around you, extending your senses through it and pulling it toward you in rippling waves. You gain tremorsense (imprecise) in your kinetic aura, and you turn earth and stone in your aura into difficult terrain. If you move during your turn, these effects are suppressed until the end of your turn.