Vincent Famin

Investigating the influence of climate and volcanic surface aging on fluvial erosion: A case study of Réunion Island, Indian Ocean

Daniel O'Hara, Loraine Gourbet, Laurent Michon, Vincent Famin

Abstract Precipitation is one of the dominant drivers of landscape erosion and evolution; however, the effects of typical rainfall compared with less frequent, high‐magnitude precipitation events on erosion remain unclear. Volcanic islands are ideal locations to study such phenomena due to their …

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Influence of Mantle Rheology on Plume Dynamics and Periodicities

Alexandre Koessler, Maëlis Arnould, Jean‐Philippe Perrillat, Vincent Famin

Many hotspots worldwide display evidence of fluctuating magmatic activities that may be linked to time-dependent variations in melt production within mantle plumes. These periodicities are observed globally on Earth, ranging from 1 Myr to 20 Myr [Morrow and Mittelstaedt, 2021 ; Sokolov …

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Reconstruction of the volcanic history of Grande Comore and volcano-tectonic implications for the Comoros Archipelago

Sandy Rougeau, Xavier Quidelleur, Vincent Famin, Laurent Michon et autres

Since the onset of Fani Maore submarine eruption, the volcanism of the Comoros Archipelago has gained renewed interest. Geochronological constraints have been recently obtained for Mohéli, Anjouan and Mayotte islands and nearby seamounts. Here we provide new groundmass K–Ar ages for Grande …

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Full dataset of the article "Synchronized Mascarene volcanism reveals 400 kyr cycles in melt supply from the Réunion plume"

Vincent Famin, Laurent Michon, Xavier Quidelleur, Maëlis Arnould

This dataset contains:Geological maps of Réunion and Mauritius islands, in QGIS format, containing digital elevation models (5 m for Réunion, 30 m for Mauritius), geochronological data, and geological units defined according to a chosen volcanic chronostratigraphy.Supplementary Tables S1 to S6, in excel …

History of the Rodrigues Ridge, Indian Ocean: implications of the Réunion hotspot and the Central Indian Ridge

julien Seghi, Vincent Famin, Xavier Quidelleur, Loraine Gourbet et autres

The Rodrigues Ridge (Indian Ocean) is a N100°E oriented submarine volcanic structure stretching eastward of the Mascarene Plateau and toward the Central Indian Ridge (CIR). The geodynamic origin of Rodrigues’ volcanism is a matter of debate because the ridge neither follows the …

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Fault rheology near the downdip limit of the seismogenic zone: new insights from microstructural and geochemical studies in fault cores from the Kodiak Central Belt, Alaska

Hugues Raimbourg, Kristijan Rajič, Vincent Famin, Donald M. Fisher et autres

Geophysical evidence of high fluid pressures and the presence of fluidized microstructures provide two independent arguments supporting the existence of fluid-like materials within the core of slipping fault zones of the crust. The nature of these materials varies depending on the specific …

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Ridge extinction in the Mascarene Basin due to the Réunion hotspot: preliminary results of the MASC Cruise

Vincent Famin, Martin Danišík, Sidonie Révillon, Sébastien Zaragosi et autres

The Mascarene Basin, between Madagascar, the Seychelles Plateau, and the Réunion hotspot track, is an ocean lithosphere whose geodynamic evolution remains enigmatic in many aspects. Part of the enigma concerns the unexplained extinction of the Mascarene mid-ocean ridge ca. 62 Ma ago …

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Impact of climate and volcanism age on landscape evolution of oceanic islands

Loraine Gourbet, Daniel O’Hara, Florian Jocham, Sean F. Gallen et autres

Tropical hotspot volcanic islands are exceptional laboratories for understanding climate-landscape interactions. Réunion Island, in the southern Indian Ocean, is particularly interesting because it has one of the largest rainfall gradients in the world: from 0.5 to 11 m/yr over a 50 km …

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Phases of Magmatism and Tectonics Along the Madagascar‐Comoros Volcanic Chain, and Synchronous Changes in the Kinematics of the Lwandle and Somalia Plates

Anaïs Rusquet, Vincent Famin, Laurent Michon, Xavier Quidelleur et autres

Abstract This paper aims to solve the longstanding debate on the origin of the Comoros volcanic archipelago (Mozambique Channel, Indian Ocean) concerning whether it represents a hotspot trail or a boundary between the Lwandle and Somalia plates in possible connection with the …

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Geothermal resources of Réunion Island, Indian Ocean, studied by noble gas systematics in thermal springs

Emilie Roulleau, Daniele L. Pinti, Vincent Famin, Bhavani Bénard et autres

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Active, long-lived upper-plate splay faulting revealed by thermochronology in the Alaska subduction zone

Suoya Fan, Kristin Morell, Donald M. Fisher, Hugues Raimbourg et autres

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The origin of tectonic mélanges from the Kodiak complex and Shimanto Belt and its implication for subduction interface processes

Kristijan Rajič, Hugues Raimbourg, Vincent Famin, Benjamin Moris‐Muttoni

Mélanges, intriguing rock units often found in accretionary complexes, consist of basalt lenses embedded in a highly sheared sedimentary matrix. The origin of mélanges remains a subject of vigorous debate, with consequences on our understanding of subduction processes. A first line of …

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