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Magmatic rifting and active volcanism: introduction

By
Tim J. Wright
Tim J. Wright
1
Centre for the Observation and Modelling of Earthquakes, Volcanoes and Tectonics, School of Earth and Environment, University of Leeds, Leeds LS2 9JT, UK
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Atalay Ayele
Atalay Ayele
2
Institute for Geophysics Space Science and Astronomy, Addis Ababa University, PO Box 1176, Addis Ababa, Ethiopia
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David Ferguson
David Ferguson
1
Centre for the Observation and Modelling of Earthquakes, Volcanoes and Tectonics, School of Earth and Environment, University of Leeds, Leeds LS2 9JT, UK
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Tesfaye Kidane
Tesfaye Kidane
3
School of Earth Sciences, College of Natural Science, Addis Ababa University, PO Box 1176, Addis Ababa, Ethiopia
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Charlotte Vye-Brown
Charlotte Vye-Brown
4
British Geological Survey, The Lyell Centre, Research Avenue South, Edinburgh EH14 4AP, UK
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Published:
January 01, 2016

Abstract

A major rifting episode began in the Afar region of northern Ethiopia in September 2005. Over a 10-day period, c. 2.5 km3 of magma were intruded into the upper crust along a 60 km-long dyke separating the Arabian and Nubian plates. There was an intense seismic swarm and a small rhyolitic eruption; extension of up to 10 m occurred across the rift segment. Over the next five years, a further 13 dyke intrusions caused continued extension, eruptions and seismicity. The activity in Afar led to a renewed international focus on the role of magmatism in rifting, with major collaborative projects involving researchers from Ethiopia, the UK, the USA, France, Italy and New Zealand working in Afar and Ethiopia to study the ongoing activity and to place it in a broader context. This book brings together articles that explore the role of magmatism in rifting, from the initiation of continental break-up through to full seafloor spreading. We also explore the hazards related to rifting and the associated volcanism. This renewed focus on magmatism and its role in rifting has implications for our understanding of how continents break-up and the associated distribution of resources in rift basins and continental margins.

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Geological Society, London, Special Publications

Magmatic Rifting and Active Volcanism

T. J. Wright
T. J. Wright
University of Leeds, UK
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A. Ayele
A. Ayele
Addis Ababa University, Ethiopia
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D. J. Ferguson
D. J. Ferguson
University of Leeds, UK
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T. Kidane
T. Kidane
Addis Ababa University, Ethiopia
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C. Vye-Brown
C. Vye-Brown
British Geological Survey, UK
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Geological Society of London
Volume
420
ISBN electronic:
9781862391345
Publication date:
January 01, 2016

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