No peat and sulfur

It's most common in tundra. To be sure, delete the WorldGenerator.eco file in /Steam/steamapps/common/Eco/Eco_Data/Server/Configs.

When you create a new random world through the game, it is actually supposed to overwrite WorldGenerator.eco settings based on its template - so either that is not working correctly or there is something else going on. We'll be monitoring reports, so far I only saw two.

Yes, after deleting the file a new world needs to be generated.