Istaratigaraafi (Af Ingiriis : Stratigraphy) waa laan ka mid ah cilmiga juqraafiga oo ka shaqeeya daraasadda lakabyada dhagaxyada iyo lakabyada. Waxaa inta badan loo adeegsadaa daraasadda dhagaxyada foolkaanaha ee sedimentari iyo lakabyada leh. Istaraatiijiyadu waxay leedahay laba qaybood oo hoose oo la xidhiidha: litostaratigaraafi (istaratigaraafi litoolojikal) iyo biostaratigaraafi (istratigaraafi nafleyda).^[1]

Tixraac

↑ Sedgwick Smith Father of English Geology | ISBN 978-1862392144.

[1] Sedgwick Smith Father of English Geology | ISBN 978-1862392144.

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