Glorieux, I agree with your prediction, and to expand...

The geo of the anomolies are the same, meaning the same type of base rock, same age and their formation was as a result of the same event. As per the professor from U of T (can't recall his name) these are 'flows' that are (or were at some point in history) connected and are close in proximity meaning they are from the same magmatic source. Everything points to similar assays.

But, that's just  MHO