Baepolli ba lintho tsa khale ba sebelisa mokhoa oa stratigraphy joang?
Stratigraphy ke ea bohlokoa haholo ho litsebi tsa lintho tsa khale'me e sebelisetsoa ho hlalosa nako le sebaka sebakeng se itseng. Ka kakaretso, mobu o haufi le holimo ke oona o sa tsoa hlaha'me o tlaase ke oona o seng o le teng. Thuto ena e ka thusa baepolli ba lintho tsa khale hore ba tsebe hore na sebaka se itseng se na le lilemo tse kae le hore na ke liketsahalo life tse fapaneng tse ka 'nang tsa etsahala sebakeng seo.