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Publication Details
AFRICAN RESEARCH NEXUS
SHINING A SPOTLIGHT ON AFRICAN RESEARCH
earth and planetary sciences
Holocene explosive eruptions in the Rungwe Volcanic Province, Tanzania
Journal of Volcanology and Geothermal Research, Volume 196, No. 1-2, Year 2010
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Description
The Holocene explosive eruptive record of Rungwe and Ngozi volcanoes of the Rungwe Volcanic Province in Tanzania was reconstructed based on detailed stratigraphic field evidence combined with whole-rock major and trace element analyses of tephra samples. This reconstruction is supported by 25 new radiocarbon dates on palaeosols that provide additional constraints on the Holocene tephro-chronostratigraphy. We show evidence of two catastrophic Ngozi eruptions and five Rungwe pumice fallout deposits, and also identify several more intercalated poorly preserved pumice and ash deposits. The Ngozi eruptions probably played a role in shaping the present-day caldera. The Rungwe record includes a ca. 2.2km3 deposit of a Plinian-style eruption dated at ca. 4ka, a sub-Plinian one at ca. 2ka and at least three additional smaller-scale fallout deposits. The Rungwe explosive eruptive record shows that the volcano has been frequently active in its late Holocene past. This study highlights the need for volcanic monitoring in the region and presents herewith the first basis of future volcanic hazard assessment. © 2010 Elsevier B.V.
Authors & Co-Authors
Fontijn, Karen
Belgium, Ghent
Universiteit Gent
Ernst, Gérald G.J.
Belgium, Ghent
Universiteit Gent
Elburg, Marlina A.
Belgium, Ghent
Universiteit Gent
Williamson, David
France, Bondy
Ird Centre D'ile-de-france
Abdallah, Edista
Tanzania, Dar es Salaam
University of Dar es Salaam
Kwelwa, Shimba D.
Tanzania, Dar es Salaam
University of Dar es Salaam
Mbede, Evelyne I.
Tanzania, Dar es Salaam
University of Dar es Salaam
Tanzania, Dar es Salaam
Ministry of Health Community Development
Jacobs, Patrick J.S.
Belgium, Ghent
Universiteit Gent
Statistics
Citations: 66
Authors: 8
Affiliations: 4
Identifiers
Doi:
10.1016/j.jvolgeores.2010.07.021
ISSN:
03770273
Research Areas
Environmental
Study Locations
Tanzania