Fig. 2: Location map of the Atacazo-Ninahuilca case study and photo of a multi-layered volcanic soil. | Nature Communications

Fig. 2: Location map of the Atacazo-Ninahuilca case study and photo of a multi-layered volcanic soil.

From: Explosive volcanic eruptions can act as carbon sinks

Fig. 2: Location map of the Atacazo-Ninahuilca case study and photo of a multi-layered volcanic soil.The alternative text for this image may have been generated using AI.

a Ecuadorian volcanoes (triangles) active during the Holocene. Volcanoes with eruptions of VEI ≥ 4 are displayed as orange triangles. The green-shaded area represents the extent of volcanic soils21. b Zoom on the rectangle in (a) showing the location of the 35 sampled volcanic soil profiles used to estimate the SOC stock buried by the tephra from the N6 (2270 ± 15 BP) eruption of Atacazo-Ninahuilca volcano. The dashed contour is the 10 cm isopach of the N6 tephra and the orange triangle indicates the volcano location. c Typical volcanic soil profile with the surface soil formed from the N6 tephra deposit and the soil buried by this tephra and which formed from the older N5 tephra deposit (4400 ± 35 BP). Background topography is from NASA shuttle radar topography mission20.

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