Unknown

Dataset Information

0

Catastrophic slab loss in southwestern Pangea preserved in the mantle and igneous record.


ABSTRACT: The Choiyoi Magmatic Province represents a major episode of silicic magmatism in southwestern Pangea in the mid-Permian-Triassic, the origin of which remains intensely debated. Here, we integrate plate-kinematic reconstructions and the lower mantle slab record beneath southwestern Pangea that provide clues on late Paleozoic-Mesozoic subducting slab configurations. Also, we compile geochronological information and analyze geochemical data using tectono-magmatic discrimination diagrams. We demonstrate that this magmatic event resulted from a large-scale slab loss. This is supported by a paleogeographic coincidence between a reconstructed 2,800-3,000-km-wide slab gap and the Choiyoi Magmatic Province and geochemical data indicating a slab break-off fingerprint in the latter. The slab break-off event is compatible with Permian paleogeographic modifications in southwestern Pangea. These findings render the Choiyoi Magmatic Province the oldest example of a geophysically constrained slab loss event and open new avenues to assess the geodynamic setting of silicic large igneous provinces back to the late Paleozoic.

SUBMITTER: Gianni GM 

PROVIDER: S-EPMC8817029 | biostudies-literature | 2022 Feb

REPOSITORIES: biostudies-literature

altmetric image

Publications

Catastrophic slab loss in southwestern Pangea preserved in the mantle and igneous record.

Gianni Guido M GM   Navarrete César R CR  

Nature communications 20220204 1


The Choiyoi Magmatic Province represents a major episode of silicic magmatism in southwestern Pangea in the mid-Permian-Triassic, the origin of which remains intensely debated. Here, we integrate plate-kinematic reconstructions and the lower mantle slab record beneath southwestern Pangea that provide clues on late Paleozoic-Mesozoic subducting slab configurations. Also, we compile geochronological information and analyze geochemical data using tectono-magmatic discrimination diagrams. We demonst  ...[more]

Similar Datasets

| S-EPMC3849635 | biostudies-literature
| S-EPMC6544764 | biostudies-literature
| S-EPMC9629742 | biostudies-literature
| S-EPMC5226644 | biostudies-literature
| S-EPMC11811892 | biostudies-literature
| S-EPMC3870714 | biostudies-literature
| S-EPMC8760304 | biostudies-literature
| S-EPMC6930287 | biostudies-literature
| S-EPMC6447373 | biostudies-literature
| S-EPMC11219803 | biostudies-literature