Please use this identifier to cite or link to this item: http://hdl.handle.net/10553/42451
Title: Locating the depth of magma supply for volcanic eruptions, insights from Mt. Cameroon
Authors: Geiger, Harri
Barker, Abigail K.
Troll, Valentin R.
UNESCO Clasification: 250621 Vulcanología
Keywords: Natural hazards
Petrology
Volcanology
Mount-Cameroon
Melt Inclusions
Active Volcano
West-Africa
Cape-Verde
Thermobarometry
Intrusion
Deposits
Issue Date: 2016
Journal: Scientific Reports 
Abstract: Mt. Cameroon is one of the most active volcanoes in Africa and poses a possible threat to about half a million people in the area, yet knowledge of the volcano's underlying magma supply system is sparse. To characterize Mt. Cameroon's magma plumbing system, we employed mineral-melt equilibrium thermobarometry on the products of the volcano's two most recent eruptions of 1999 and 2000. Our results suggest pre-eruptive magma storage between 20 and 39 km beneath Mt. Cameroon, which corresponds to the Moho level and below. Additionally, the 1999 eruption products reveal several shallow magma pockets between 3 and 12 km depth, which are not detected in the 2000 lavas. This implies that small-volume magma batches actively migrate through the plumbing system during repose intervals. Evolving and migrating magma parcels potentially cause temporary unrest and short-lived explosive outbursts, and may be remobilized during major eruptions that are fed from sub-Moho magma reservoirs.
URI: http://hdl.handle.net/10553/42451
ISSN: 2045-2322
DOI: 10.1038/srep33629
Source: Scientific Reports [ISSN 2045-2322], v. 6 (33629)
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