Volcanic ash from the Peru continental margin, supplement to: Pouclet, André; Cambray, Hervé; Cadet, Jean-Paul; Bourgois, Jacques; de Wever, Patrick (1990): Volcanic ash from Leg 112 off Peru. In: Suess, E; von Huene, R; et al. (eds.), Proceedings of the Ocean Drilling Program, Scientific Results, College Station, TX (Ocean Drilling Program), 112, 465-480

André Pouclet, Hervé Cambray, Jean-Paul Cadet, Jacques Bourgois & Patrick de Wever
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 from the Andean volcanic arc. The amount and thickness of ash layers provide valuable evidence for explosive volcanic episodicity. The first indication of volcanism was found in mid-Eocene sediments. Three volcanic pulses date from Miocene time. Two intense episodes took place in upper Pliocene and from Pleistocene to...
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