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Physicochemical properties of alkali carbonatite lavas:Data from the 1988 eruption of Oldoinyo Lengai, Tanzania
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1990
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Magmatic ProcessVolcanologyEngineeringVolcanismAlkali Carbonatite LavasEarth ScienceMagmatic-hydrothermal SystemOldoinyo LengaiApparent ViscositiesHigh Temperature GeochemistryGeochronologyVolcanic ProcessMaterials ScienceMagmatismGeologyExtrusion TemperaturesGeochemistryPetrologyPhysicochemical Properties
Alkali carbonatite lavas extruded from Oldoinyo Lengai, Tanzania, in November 1988 are similar in composition to lavas extruded in 1960. Extrusion temperatures are 585 ±10 °C. Apparent viscosities in this temperature range are between 0.3 and 120 Pa⋅s, the highest values coming from very frothy and phenocryst-rich magma. The viscosities and temperatures are the lowest known for terrestrial magmas.