How were crystallization pressures and temperatures affected by temporal and morphological changes in the last 2 Ma beneath Martinique Island?

A groundbreaking analysis reveals that crystallization pressures and temperatures beneath Martinique Island's northern volcanoes—Morne Jacob, Pitons du Carbet, Trois Ilets, and Mt. Conil—have been significantly influenced by temporal and morphological changes over the last 2 million years. Unlike previous studies focused solely on Mt. Pelée, this research demonstrates that flank collapses in these volcanoes correlate with increased eruptive rates and a shift toward more mafic magmas post-collapse. The study utilized advanced geochemical modeling to quantify these relationships, offering new insights into volcanic behavior linked to structural instability. These findings challenge existing paradigms by showing that such patterns are not unique to Mt. Pelée but are shared across the region's volcanic systems.

Martens, A., & Germa, A. (2023). How were crystallization pressures and temperatures affected by temporal and morphological changes in the last 2 Ma beneath Martinique Island? Goldschmidt2023 Abstracts. https://doi.org/10.7185/gold2023.20651