While Don deleted his version of this e-mail, he sent me a copy before he did that,
so here is the complete reply to Don:

Hi Don --

Thank you for your e-mail. No, there is no possibility that the =
earthquakes experienced around Trinidad, CO are magmatic in nature -- =
especially at the 3.5 to 4.0 magnitudes recorded. They are more likely =
than not, the result of a random movement of a nearby fault zone. =
Volcanic earthquakes have quite a different "signature" than the ones =
being experienced there at Trinidad.

Hope this helps out and many thanks again for the e-mail.

Respectfully,

SOUTHWEST VOLCANO RESEARCH CENTRE