disclaimer: I'm not an expert, but I've been watching some geology lectures focused on the pacific northwest [1] for fun recently.
This is on the Jaun de Fuca Ridge, on the other edge of the Juan de Fuca plate [2] from the Cascadia subduction zone, so it's related in the sense that it's the same tectonic plate, and the plate is very small (as far as I understand, it's a remnant of a plate that has been subducting under North America for a very long time). It is not (in my very-non-expert opinion) necessarily related in a direct sense to what is happening in the subduction zone.
Wow, that playlist is absolute gold. These kinds of instructional, high-quality, long-form lecture series are IMO maybe the best thing on the internet. The kind of thing when I encounter it makes me take a step back and really appreciate the fundamental beauty and utility of the internet.
Sometimes I wish there was a frontend for YouTube that only has these kind of long-form lecture series, but I've never found one. I think part of the reason why is that essential "quality" is somewhat ineffable.
This is on the Jaun de Fuca Ridge, on the other edge of the Juan de Fuca plate [2] from the Cascadia subduction zone, so it's related in the sense that it's the same tectonic plate, and the plate is very small (as far as I understand, it's a remnant of a plate that has been subducting under North America for a very long time). It is not (in my very-non-expert opinion) necessarily related in a direct sense to what is happening in the subduction zone.
[1]: e.g: https://www.youtube.com/playlist?list=PLcKUIuDhdLl92gfymRabw... [2]: https://en.wikipedia.org/wiki/Juan_de_Fuca_Plate