Volcanic ash from the Peru continental margin
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During Leg 112 off Peru, volcanic material was recorded from middle Eocene to Holocene time. The petrographical and chemical composition of tephra is consistent with an origin...
在秘鲁外海第112航次期间，记录到了始新世中期至全新世时期的火山物质。火山碎屑（tephra）的岩石学与化学组成与其成因相符……
