 puraavastu shaastraveettha stratigraphini elaa upayogisthaadu ?
 stratigraphy anede puraavastu shaastravettalaku chaaala mukyamainadhi mariyu cyte ‌ loni samayam mariyu sdhalaanni ardham cheskovadaniki upayoginchabadutundi .  saadharanamga ,  paibhaagaaniki sameepamlo unna nela kshitijaalu athantha itiivalivi mariyu diguvana unnavi paathavi .  stratigraphy anede puraavastu saastravettaku cyte entha paatado alaage cyte ‌ loo jargina vibhinna sanghatanalanu gurtinchadamlo sahaayapadutundi .