The Volcanic Geology of the Mid-Arc Island of Dominica, Lesser Antilles—The Surface Expression of an Island-Arc Batholith

Smith, A. L.; Roobol, M. J.; Mattioli, G. S.; Fryxell, Joan E.; Daly, G.E.; Fernandez, L.A.

doi:10.1130/2013.2496

Cited by 22 publications

(118 citation statements)

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“…Reconnaissance whole-rock geochemistry from across the island revealed that the northern-most center (Aux Diables; Fig. 1) consists of tholeiitic andesite, while all other major centers are calc-alkaline in composition (Smith et al, 2013). The petrology of the calc-alkaline volcanoes led Smith et al (2013) to propose that many of the centers experience similar magmatic histories and therefore may be connected.…”

Section: Introductionmentioning

confidence: 97%

“…1) consists of tholeiitic andesite, while all other major centers are calc-alkaline in composition (Smith et al, 2013). The petrology of the calc-alkaline volcanoes led Smith et al (2013) to propose that many of the centers experience similar magmatic histories and therefore may be connected. Further, zircon geochronologies of magmas from ten volcanoes reveal a common thermal evolution (Howe et al, 2015).…”

Section: Introductionmentioning

confidence: 98%

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Evolution of young andesitic–dacitic magmatic systems beneath Dominica, Lesser Antilles

Howe

Lindsay

Shane

2015

Journal of Volcanology and Geothermal Research

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Section: Introductionmentioning

confidence: 97%

Section: Introductionmentioning

confidence: 98%

Evolution of young andesitic–dacitic magmatic systems beneath Dominica, Lesser Antilles

Howe

Lindsay

Shane

2015

Journal of Volcanology and Geothermal Research

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“…In the north and central parts of the arc, the islands from Saba to Saint Lucia have dominantly erupted andesite and dacite magma, and in the past have produced both large explosive eruptions generating pumiceous pyroclastic flow deposits and lava domes and their associated block and ash flow deposits (e.g., Macdonald et al, 2000;Lindsay et al, 2013;Smith et al, 2013;Bezard et al, 2014;Howe et al, 2015a). Most of the volcanoes in this part of the Lesser Antilles arc are stratovolcanoes, and many of these are made up of a series of coalescing lava domes.…”

Section: Volcanism In the Lesser Antillesmentioning

confidence: 99%

Integrating Volcanic Hazard Data in a Systematic Approach to Develop Volcanic Hazard Maps in the Lesser Antilles

Lindsay

Robertson

2018

Front. Earth Sci.

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We report on the process of generating the first suite of integrated volcanic hazard zonation maps for the islands of Dominica, Grenada (including Kick 'em Jenny and Ronde/Caille), Nevis, Saba, St. Eustatius, St. Kitts, Saint Lucia, and St Vincent in the Lesser Antilles. We developed a systematic approach that accommodated the range in prior knowledge of the volcanoes in the region. A first-order hazard assessment for each island was used to develop one or more scenario(s) of likely future activity, for which scenario-based hazard maps were generated. For the most-likely scenario on each island we also produced a poster-sized integrated volcanic hazard zonation map, which combined the individual hazardous phenomena depicted in the scenario-based hazard maps into integrated hazard zones. We document the philosophy behind the generation of this suite of maps, and the method by which hazard information was combined to create integrated hazard zonation maps, and illustrate our approach through a case study of St. Vincent. We also outline some of the challenges we faced using this approach, and the lessons we have learned by observing how stakeholders have interacted with the maps over the past ∼10 years. Based on our experience, we recommend that future map makers involve stakeholders in the entire map generation process, especially when making design choices such as type of base map, use of colour and gradational boundaries, and indeed what to depict on the map. We also recommend careful consideration of how to evaluate and depict offshore hazard of island volcanoes, and recommend computer-assisted modelling of all phenomena to generate more realistic hazard footprints. Finally, although our systematic approach to integrating individual hazard data into zones generally worked well, we suggest that a better approach might be to treat the integration of hazards on a case-by-case basis to ensure the final product meets map users' needs. We hope that the documentation of our experience might be useful for other map makers to take into account when creating new or updating existing maps.

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“…Waven has been considered to be the likely source of the Roseau Tuff eruption (Lindsay et al, 2005b;Smith et al, 2013). …”

Section: Previous Work On Dominica Ignimbritic Eruptionsmentioning

confidence: 99%

“…The Layou PDC deposits which crop out within the confines of the Layou valley is thought to be sourced from the Morne Trois Pitons volcanic center (Smith et al, 2013). An …”

Section: Layou Ignimbritementioning

confidence: 99%

Revised chronostratigraphy of recurrent ignimbritic eruptions in Dominica (Lesser Antilles arc): Implications on the behavior of the magma plumbing system

Boudon

Balcone-Boissard

Martel

2017

Journal of Volcanology and Geothermal Research

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The Volcanic Geology of the Mid-Arc Island of Dominica, Lesser Antilles—The Surface Expression of an Island-Arc Batholith

Cited by 22 publications

References 0 publications

Evolution of young andesitic–dacitic magmatic systems beneath Dominica, Lesser Antilles

Evolution of young andesitic–dacitic magmatic systems beneath Dominica, Lesser Antilles

Integrating Volcanic Hazard Data in a Systematic Approach to Develop Volcanic Hazard Maps in the Lesser Antilles

Revised chronostratigraphy of recurrent ignimbritic eruptions in Dominica (Lesser Antilles arc): Implications on the behavior of the magma plumbing system

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