Service interruption on Monday 11 July from 12:30 to 13:00: all the sites of the CCSD (HAL, EpiSciences, SciencesConf, AureHAL) will be inaccessible (network hardware connection).
Skip to Main content Skip to Navigation
Journal articles

A Possible Roll-over Slab Geometry under the Caroline Plate Imaged by Monte Carlo Finite-Frequency Traveltime Inversion of Teleseismic SS Phases

Abstract : The shape of a subducting slab varies as a function of trench motion. Two end-members of subduction modes are geodynamically possible: roll-back mode underneath neighboring plates and roll-over mode underneath the plate itself. Whereas most of major slabs seem to roll back while the Pacific plate shows a slab piling behavior down to ~1,000 km depth under the Mariana trench, no clear evidence of slab roll-over in nature has been reported so far. Here we show a possible roll-over slab beneath the Caroline microplate, revealed from its three-dimensional seismic velocity structure derived by analyzing teleseismic reverberating SS phases. We suggest that slab roll-over is driven by at least two factors: i) the overall buoyancy and fragility of the Caroline microplate at the surface, induced by a thin hot mantle plume that rises from depths ≥800 km; and ii) the pushing force of the Pacific plate acting on the trailing edge of the Caroline plate.
Document type :
Journal articles
Complete list of metadata

https://hal-insu.archives-ouvertes.fr/insu-03590085
Contributor : Nathalie POTHIER Connect in order to contact the contributor
Submitted on : Saturday, February 26, 2022 - 5:46:57 PM
Last modification on : Tuesday, May 17, 2022 - 5:08:02 PM
Long-term archiving on: : Friday, May 27, 2022 - 6:22:09 PM

File

feart-09-593947.pdf
Publisher files allowed on an open archive

Licence


Distributed under a Creative Commons Attribution 4.0 International License

Identifiers

Collections

Citation

Nobuaki Fuji, Hyoihn Jang, Atsushi Nakao, younghee Kim. A Possible Roll-over Slab Geometry under the Caroline Plate Imaged by Monte Carlo Finite-Frequency Traveltime Inversion of Teleseismic SS Phases. Frontiers in Earth Science, Frontiers Media, 2021, 9, p. 210-225. ⟨10.3389/feart.2021.593947⟩. ⟨insu-03590085⟩

Share

Metrics

Record views

49

Files downloads

4