Coal formation primarily occurs in subtropical regions where conditions are conducive to the development of peat, which eventually transforms into coal over millions of years through heat and pressure. This process typically takes place in low-lying areas like swamps or marshes where plant material can accumulate.
However, coal deposits can be found at varying elevations due to geological processes such as sedimentation and tectonic activity. Over millions of years, regions that were once low-lying swamps can be uplifted through tectonic forces, causing coal deposits to be found on top of mountains.
To summarize:
- Swamps: Coal typically forms in wetland environments where plant matter accumulates, creating peat.
- Geological Uplift: Over time, tectonic activity can uplift these coal-rich areas to high elevations, depositing coal seams in mountainous regions.
Therefore, while the initial formation of coal occurs in swamps, uplift and geological processes can lead to coal deposits being found in mountainous regions.