Hello, great idea! Unsure if exactly what you have envisaged has been done, but there are many examples of data repositories that provide map views to look (and download) data. I haven’t seen one for publications though. One hurdle I see is the scale of studies and depicting them on a map. For example a study “Rocks of Buenos Aires” is simple to locate to Buenos Aires, but a study like “Andean andesites” would cover a large area and several outcrops/site/cores for which a single point might not be very representative.
Cheers