Physicochemical properties of alkali carbonatite lavas:Data from the 1988 eruption of Oldoinyo Lengai, Tanzania

J. B. Dawson; H. Pinkerton; G. E. Norton; D. M. Pyle

doi:10.1130/0091-7613(1990)018<0260:PPOACL>2.3.CO;2

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Research Article| March 01, 1990

Physicochemical properties of alkali carbonatite lavas:Data from the 1988 eruption of Oldoinyo Lengai, Tanzania

J. B. Dawson;

J. B. Dawson

1

Department of Geology, University of Edinburgh, West Mains Road, Edinburgh EH9 3JW, Scotland

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H. Pinkerton;

H. Pinkerton

2

Environmental Science Division, Institute of Environmental and Biological Sciences, University of Lancaster, Lancaster LA1 4YQ, England

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G. E. Norton;

G. E. Norton

2

Environmental Science Division, Institute of Environmental and Biological Sciences, University of Lancaster, Lancaster LA1 4YQ, England

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D. M. Pyle

3

Department of Earth Sciences, Downing Place, Cambridge CB2 3EQ, England

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Author and Article Information

J. B. Dawson

1

Department of Geology, University of Edinburgh, West Mains Road, Edinburgh EH9 3JW, Scotland

H. Pinkerton

2

Environmental Science Division, Institute of Environmental and Biological Sciences, University of Lancaster, Lancaster LA1 4YQ, England

G. E. Norton

2

Environmental Science Division, Institute of Environmental and Biological Sciences, University of Lancaster, Lancaster LA1 4YQ, England

D. M. Pyle

3

Department of Earth Sciences, Downing Place, Cambridge CB2 3EQ, England

Publisher: Geological Society of America

First Online: 02 Jun 2017

Online ISSN: 1943-2682

Print ISSN: 0091-7613

Geological Society of America

Geology (1990) 18 (3): 260–263.

https://doi.org/10.1130/0091-7613(1990)018<0260:PPOACL>2.3.CO;2

Abstract

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.

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