Abstract
Mt. Misery volcano, near the northern end of the Lesser Antilles island arc, produced late Quaternary airfall layers that have different dispersal patterns. These are controlled by: a) the style of explosive activity which determined the heights of the eruption columns and b) a layered atmospheric system with contrasted bipolar wind directions at different altitudes. Isopach and isopleth maps are given for 10 eruptions belonging to the Mansion Series (>41, 730–1, 750 yrs. B.P.). Basaltic strombolian-type scoria-fall deposits were dispersed mainly by surface/lower tropospheric winds to the NW and W. In contrast green and brown andesitic sub-plinian and plinian falls with higher eruption columns were dispersed to the SE and E by upper tropospheric winds. Thinly laminated phreatomagmatic ashes within the Mansion Series are again dispersed to the NW and controlled by surface winds.
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