Exhuming my thesis ... an update

Update: this is my last post as I move on. Didn't plan it that way, but ending where I began is satisfying.

By the way, "exhuming my thesis" was an inside joke: the geology and tectonics both in my area in N Ontario and the inspiration paper in Alaska talked about "exhumed terranes"; continental blocks that were buried and metamorphosed, displaced and then exhumed back to the surface to their current location.

In my exploration of climate change and precursors in the Proterozoic - see classnotes here - I ran across this other paper here: it linked in addition to a cracking map on another platform, QGIS (here) I also used in the past. It included the latest in terrane interpretation, and it also posted magnetic data (source). It's a lot less distinct but the main features are discernible:

interpretation (click to enlarge)

raw data (click to enlarge)

I brought this up however not for the poorer data, but for the terranes identified by those authors in this 2022 work, twenty years after the Alaska paper and twenty after mine:

source at bottom (click to enlarge)

Their Mazatsal and Yavapai Terranes correspond to mine purported to be south of the Manitoulin Island Discontinuity bisecting the middle of the diagram. Again it's a sketch diagram that points to a collection of terranes, two decades after the USGS's and three after mine in my previous post.