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Artículo de revista

Evidence for Petit‐Spot Volcanism in the Puerto Rico Trench

Nicholas Harmon et al · Wiley · 2025

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Author / responsible party
Nicholas Harmon et al
Publisher
Wiley
Year
2025
ISSN
0094-8276
ISSN
0094-8276
Language
English
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Abstract Petit‐spot volcanism occurs in intraplate settings along the outer rise of subducting plates. Here we present evidence for petit‐spot type of volcanism from multibeam bathymetry and backscatter data from the Puerto Rico Trench (PRT). It is the first report of such volcanism in the Atlantic basin. Up to 34 possible petit‐spot volcanic cones are mapped in the eastern section of the PRT, with an average diameter of 950 m and a mean height of 92 m. The seamounts are in a region of the PRT that has the longest and highest bending faults, up to 50.6 km long and 1.49 km high. Some of the volcanic cones are associated with fault scarps. The larger bending fault scarps in the region of the volcanic cones suggest the stress state in the eastern PRT is favorable for allowing asthenospheric melt to escape to the surface.

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APA 7

al, N. H. E. (2025). Evidence for Petit‐Spot Volcanism in the Puerto Rico Trench. https://doi.org/10.1029/2024GL114362

MLA

al, Nicholas Harmon et. "Evidence for Petit‐Spot Volcanism in the Puerto Rico Trench." 2025. https://doi.org/10.1029/2024GL114362.

Chicago

al, Nicholas Harmon et. 2025. "Evidence for Petit‐Spot Volcanism in the Puerto Rico Trench.". https://doi.org/10.1029/2024GL114362.

Harvard

al, N. H. E. 2025, Evidence for Petit‐Spot Volcanism in the Puerto Rico Trench, Wiley, available at: https://doi.org/10.1029/2024GL114362 [Accessed 8 Aug. 2026].

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Title
Evidence for Petit‐Spot Volcanism in the Puerto Rico Trench
Author / contributors
Nicholas Harmon et al
Publisher
Wiley
Publication year
2025
ISSN
0094-8276
ISSN
0094-8276
Language
English

Subjects

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petit‐spot; bathymetry; seafloor volcano; marine geophysics; lithosphere‐asthenosphere boundary
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