Nothing coming to mind other than than high text books or encyclopedias.
What’s the goal?
If it is fantasy, sci-fi, general knowledge?
For fantasy/medieval water table formations are the most important aspect of geology in my opinion. Those are not at the same scale of tectonic plates…in time or ultimate influence.
Understanding that most population centers where at major crossroads that where able to feed the populations.
Crossroads where typically waterways. Only mining towns might be worth transporting food to.
As cities grow they overtake the cultivation land.
Heard animals where typically maintained as mobile and semi nomadic. Fish probably provided a vast majority of protein.
Grains where used for people food not animal feed until recently.
A lot and by a lot I mean 90% of wetlands is probably gone because of the hunting of beavers…
https://www.goodreads.com/book/show/39345591-eager#:~:text=The%20story%20of%20beavers%20is%20the%20story%20of,ever%20found%3B%20some%20trees%20flourish%20near%20standing%20water.
The book talks about beavers in the US, but can probably apply to Europe and Asia…not South America, Africa,Asian Subcontinent, or Oceania.
Simply reducing in flash floods, and massive increase in freshwater retention, as well as brush and forest maintenance from these rodents that we don’t think about, provide a drastic difference to the landscape of pre-industrial society.
As to Fractal Terrains…awesome tool if doing a space based adventure, where you want different habitable planets.
https://opengeology.org/textbook/
Probably has what you need to start off of. Also Plate tectonics is relatively new…1960s and 70s where it is considered real. http://scecinfo.usc.edu/education/k12/learn/plate2.htm#:~:text=Since%20the%20north%20pole%20is%20essentially%20fixed%2C%20except,uncovered%20which%20supports%20the%20theory%20of%20plate%20tectonics.