with the extension of kerogen definition to recent sediments, organic matter incorporation into sediments is proposed as the limit between preservation mechanism vs. evolution processes.
给这篇翻译加备注
metin petrolün hammeddesi olan kerojen ile ilgilidir ------------------------------------------ I edited (line#2), : "proposeded" with "proposed",and (line#3) : "prcesses" with "processes" (07/24 francky)