No short reversals of Brunhes Age recorded in the Toba Tuffs, north Sumatra, Indonesia
- 1 July 1987
- journal article
- Published by American Geophysical Union (AGU) in Geophysical Research Letters
- Vol. 14 (7) , 753-756
- https://doi.org/10.1029/gl014i007p00753
Abstract
Paleomagnetic and 40Ar/39Ar data indicate that two tuffs are present at Siguragura, North Sumatra, Indonesia: a reversely magnetized tuff (the earliest eruptive unit of the Toba caldera) of Matuyama age (0.84 Ma) and a normally magnetized tuff (the last eruptive unit of the Toba caldera) of late Brunhes age. No reversely magnetized tuffs of late Brunhes age are present at this location as suggested by previous investigators.This publication has 8 references indexed in Scilit:
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