Views of Payson Sheets’ Research
Views of Payson Sheets’ Research
Dec 31, 2015
Views of Payson Sheets’ Research. Small eruption, Arenal Volcano, Costa Rica. Arenal’s stratigraphy: 10 major Explosive eruptions in 4000 years, Each with a soil developed On top, with ecologic Recovery and human recolonization. - PowerPoint PPT Presentation
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Views of Payson Sheets’ Research
Small eruption, Arenal Volcano, Costa Rica
Arenal’s stratigraphy: 10 majorExplosive eruptions in 4000 years, Each with a soil developedOn top, with ecologicRecovery and human recolonization.
Tronadora Vieja site. Begins c. 3000 BC. Arenal volcano in distance.
Chalchuapa lake stratigraphy, 1200 BC to Ilopango tephra c AD 400.
Caldera of Lake Ilopango, sourceOf the TBJ tephra, c. AD 400.San Salvador in background.
Cuchilla site. 42 km from Ilopango. Tephra c. 3 m deep.
Ilopango
Loma
Caldera
Ceren, El Salvador
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