Geology of Stromboli

Scari Complex and Vancori volcano:
The Scari Complex is mainly visible in Scari and SW from there as an up to 50m thick sequence mainly formed by bombs and depositis from lahars and pyroclastic flows (lapilli-tuffs; average age about 34'600 y B.P.). Above this lie the pyroclastics and shoshonitic basalt lava flows of the Vancori period (dated rock ages: 26'000-13'000 y B.P.). At certain times there was a large summit crater or even a caldera. This period ended with the collapse of the entire W- and NW-part of the volcano (units 13-21).