Organic (or cumulose) deposits have developed in place from plant residues and have been preserved by a high water table (or some other factor retarding decomposition). These deposits are widespread and not restricted to any climatic zone. In British Columbia they are most abundant in the northern parts (e.g., Queen Charlotte Island, Fort Nelson Lowland, and Liard Plain). In the rest of the province, organic materials are restricted to relatively small areas in depressions. Examples are peat (undecomposed or slightly decomposed organic matter) and muck (highly decomposed organic material).
Cumulose – Organic Parent Material