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Volcanic RocksClay MineralsNorthern PartAlkali-olivine BasaltDegree of CoalificationAlkali Olivine BasaltDepleted PeridotiteDegree of Partial MeltingRegional ExplorationLamprophyre DykesSubvolcanic RocksIllite CrystallinitySpinel PeridotiteMantle MetasomatismClayey SedimentsCrust and Upper MantleTaxus Baccata LPeridotite XenolithsBiological EvidenceVolcanic Region