DEM-based reconstruction of southern Basse-Terre volcanoes (Guadeloupe archipelago, FWI): Contribution to the Lesser Antilles Arc construction rates and magma production

Lahitte, Pierre; Samper, A.; Quidelleur, Xavier

doi:10.1016/j.geomorph.2011.04.008

Cited by 43 publications

(30 citation statements)

References 32 publications

(63 reference statements)

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“…Although this rate is 10 times lower than at most arc volcanoes, it is comparable to the long‐term construction rate of Morne Jacob, a basaltic‐andesite shield volcano in central Martinique that was built between 5.5 and 1.5 Ma [ Germa et al , ]. It is also comparable to the lowest construction rate calculated for Grande Découverte volcanic complex in Guadeloupe [ Lahitte et al , ]. This rather low rate, observed for the first eruptive period of Mont Conil, may be explained by its effusive regime and the fact that several vents fed the erupted lavas.…”

Section: Discussionsupporting

confidence: 56%

“…The construction rates (Figure c), varied by almost a factor of 15 during the lifetime of the volcano, from 0.04 km 3 /kyr, in early subaerial stages, up to 0.52 km 3 /kyr for the edifice that grew after the second flank collapse. These rates are the same order of magnitude as eruption rates calculated for arc volcanoes in continental or intraoceanic settings [ Frey et al , ; Germa et al , ; Harford et al , ; Hildreth et al , , ; Hora et al , ; Jicha and Singer , ; Lahitte et al , ; Ownby et al , ; Ricci et al , ] and more specifically, for volcanoes from the Lesser Antilles, such as Morne Jacob in Martinique [ Germa et al , ], Soufriere Hills at Montserrat [ Harford et al , ], and Grande Découverte and Piton de Bouillante in Guadeloupe [ Lahitte et al , ; Ricci et al , ]. The total production along the Lesser Antilles during the last 100 kyr has been estimated at 285 km 3 [ Crisp , ] at a rate of 3 km 3 /kyr [ Wadge and Shepherd , ].…”

Section: Discussionmentioning

confidence: 65%

“…Another way to quantify the growth rate of an edifice is to calculate its average thickness and height increase rate [ Lahitte et al , ]. The former is obtained by dividing the volume by the area covered and represents the average thickness of the products emitted during a stage.…”

Section: Discussionmentioning

confidence: 99%

“…Bulk rock constructional or destructional volumes are obtained by calculating the elevation difference of two successive PDEMs. Construction of the PDEMs involves a multistep process, using the ShapeVolc algorithm [ Lahitte et al , ; Lavigne et al , ; Ricci et al , ], described in Appendix A and summarized below with details regarding this particular study.…”

Section: Methodsmentioning

confidence: 99%

“…Moreover, it is known that high fluxes cause sustained and intense volcanic activity [ Paterson et al , ; Schöpa and Annen , ], so it is crucial to be able to quantify these fluxes. In this study, we use the geomorphology of preserved deposits [ Lahitte et al , ] extracted from a digital elevation model (DEM) to produce a suite of paleo‐DEMs (PDEMs). We used these PDEMs to quantify long‐term volumes and construction rates at the Mont Conil‐Mont Pelée composite volcano (Figure ), Martinique, in order to decipher its evolution and past eruptive behavior.…”

Section: Introductionmentioning

confidence: 99%

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Construction and destruction of Mont Pelée volcano: Volumes and rates constrained from a geomorphological model of evolution

2015

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This study presents long-term volumes and construction rates for the Mont Conil-Mont Pelée volcano and rate estimates at which volcanic activity creates relief. An algorithm, ShapeVolc, is used to numerically model topographic surfaces. Volcano morphology is analyzed using current digital elevation model in combination with mapped geology to produce 10 paleotopographies at the end of four constructional stages and three destructional events. , and 3.5 km 3 , thus about 37% of the total constructed volume. Integrated over the volcano's lifetime, the rate at which flank collapses removed material off the island is 0.15 km 3 /kyr. In contrast, long-term erosion rates outside collapsed areas are estimated at about 0.05 ± 0.7 km 3 /kyr, or~11 km 3 of material removed. This latter rate is not negligible, which strengthens the importance of taking into account recurrent small erosional events on the geomorphological evolution of a volcanic island in a tropical context.

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Section: Discussionsupporting

confidence: 56%

Section: Discussionmentioning

confidence: 65%

Section: Discussionmentioning

confidence: 99%

Section: Methodsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Construction and destruction of Mont Pelée volcano: Volumes and rates constrained from a geomorphological model of evolution

2015

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Four‐dimensional numerical modeling of crustal growth at active continental margins

et al. 2013

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[1] Crustal growth and topography development in subduction-related arcs are intimately related to magmatic processes and melt production above subducting slabs. Lateral and temporal variations in crustal thickness and composition have been observed in nature, but until now no integrated approach has been developed to comprehensively understand magmatic activity in subduction-related arcs. Here we investigate the 4-D spatial, temporal, and compositional character of continental crustal growth at active margins using a new 4-D (space-time) petrological-thermomechanical numerical model of a subduction-related magmatic arc. Based on a series of numerical experiments, we demonstrate that crustal growth inside the arc is inherently clustered in both space and time. The characteristic wavelength of variations in crustal thickness and topography along the arc is on the order of 30-80 km and is comparable to volcano clustering in natural arcs. The clusters of new crust are formed mainly by basaltic melt episodically extracted from partially molten peridotite due to lateral variation of water release and transport in the mantle wedge. Melts derived from subducted oceanic crust and sediments could contribute up to 15-50 vol% to the arc crust growth and their relative proportion is maximal at the onset of subduction. The total amount of newly formed crust correlates mainly with the amount of convergence since the beginning of subduction and is not strongly influenced by the plate convergence velocity. Indeed, slower subduction and lower melt extraction efficiency helps partially molten sediments and oceanic crust to be transported into the mantle wedge by hydrated, partially molten diapiric structures. For the modeled regime of stable subduction, the maximum crustal additional rate (25-40 km 3 /km/Myr) occurs when the amount of convergence reaches around 700 km. Mantle wedge structures developed in our models correlate well with available geophysical (seismological) observations for the Alaskan subduction zone. In particular, partially molten mantle plumes found in our models could explain low seismic anomalies in the mantle wedge, whereas mobile water and water release patterns could reflect paths and sources for magmatic activity evidenced by seismic b-value and Vp/Vs ratio analysis.

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Pointcloud and Volcanic Geomorphology

Gomez

2022

Springer Textbooks in Earth Sciences, Geography and Environment

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DEM-based reconstruction of southern Basse-Terre volcanoes (Guadeloupe archipelago, FWI): Contribution to the Lesser Antilles Arc construction rates and magma production

Cited by 43 publications

References 32 publications

Construction and destruction of Mont Pelée volcano: Volumes and rates constrained from a geomorphological model of evolution

Construction and destruction of Mont Pelée volcano: Volumes and rates constrained from a geomorphological model of evolution

Four‐dimensional numerical modeling of crustal growth at active continental margins

Pointcloud and Volcanic Geomorphology

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