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Deciphering the evolution of Deception Island's magmatic system
A Geyer1, A M Álvarez-Valero2, G Gisbert3
1Institute of Earth Sciences Jaume Almera, ICTJA, CSIC, Lluis Sole i Sabaris s/n, 08028, Barcelona, Spain. ageyer@ictja.csic.es.
Scientific Reports
|January 25, 2019
Summary
Deception Island
Area of Science:
- Volcanology
- Geochemistry
- Petrology
Background:
- Deception Island is a highly active Antarctic volcano with over 20 explosive eruptions in two centuries.
- Recent eruptions and unrest episodes highlight the ongoing risk of future volcanic activity.
Purpose of the Study:
- To develop a comprehensive evolutionary model of the magmatic system beneath Deception Island.
- To integrate new petrologic and geochemical data with existing regional studies.
Main Methods:
- Integration of new petrologic and geochemical data.
- Analysis of an extensive database of previous regional studies.
- Development of a unifying evolutionary model for the magmatic system.
Main Results:
- Identification of a complex plumbing system with multiple shallow magma chambers (≤10 km depth).
- Magma supply originates directly from the mantle or a crust-mantle boundary accumulation zone (15-20 km depth).
Conclusions:
- Understanding Deception Island's magmatic system is crucial for interpreting monitoring data during unrest.
- Improved understanding enhances the effectiveness of future eruption forecasting.
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