Rocks from more recent geological periods such as the Jurassic, Cretaceous, and Tertiary periods usually contain lime-rich rocks. The absence of such rocks has led to an acidic substrate which manifests itself in the nature of the soil.
RoCKS from mOre recEnt GeoloGIcAl peRiODs SucH as THe JurassIc, cretAceous, And Tertiary PeriodS usualLy ConTaiN Lime-rich rockS. the aBsEncE of Such rocKs has lEd to an aCidic sUbstrAte whicH mAnifests iTsELf iN tHe NaTUre of the sOIl.