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Views of Payson Sheets’ Research

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.

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Views of Payson Sheets’ Research

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  1. Views of Payson Sheets’ Research

  2. Small eruption, Arenal Volcano, Costa Rica

  3. Arenal’s stratigraphy: 10 major Explosive eruptions in 4000 years, Each with a soil developed On top, with ecologic Recovery and human recolonization.

  4. Tronadora Vieja site. Begins c. 3000 BC. Arenal volcano in distance.

  5. Chalchuapa lake stratigraphy, 1200 BC to Ilopango tephra c AD 400.

  6. Caldera of Lake Ilopango, source Of the TBJ tephra, c. AD 400. San Salvador in background.

  7. Ceren, El Salvador Loma Caldera Ilopango

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