I wasn't able to find any imagery online, and I don't have anything I can share publicly.
These are some of the existing commercial solutions (just found these on Google, can't remember which I was comparing my own work against):
- https://koregeosystems.com/digital-core-logging/
- https://mountsopris.com/wellcad/core-logging-software/
- https://www.geologicai.com/logging/
I don't know enough about the science side to take it any further on my own.
The "tech" part of what I started building is really quite simple: convert the images to Cloud-optimised GeoTIFF, then do range requests to S3 from the browser.