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In this study, we investigate the mantle transition zone (MTZ) structure beneath the R\u00e9union Island using 3D-migration of P-Receiver functions, to decipher the effect of the plume on the MTZ and its architecture. Results indicate a thin MTZ in the regions surrounding the R\u00e9union, like Madagascar and its vicinity, eastern and south-eastern sides of the R\u00e9union, suggesting high-temperature anomalies within, caused by the plume. Interestingly, we detect a depressed 410\u00a0km discontinuity exactly beneath the R\u00e9union hotspot and a broader depression of 660\u00a0km discontinuity within and regions in its proximity. These maiden results shed-light on the high-temperature anomalies in the mid-mantle, probably sourced from the R\u00e9union plume and provide evidence for the Majorite-garnet phase transformation at 660\u00a0km discontinuity. We postulate that an ascending R\u00e9union plume has initially hit the 660\u00a0km discontinuity, got horizontally spread and further progressed to the 410\u00a0km discontinuity as a columnar structure.<\/jats:p>","DOI":"10.1038\/s41598-025-94831-3","type":"journal-article","created":{"date-parts":[[2025,3,29]],"date-time":"2025-03-29T23:31:17Z","timestamp":1743291077000},"update-policy":"https:\/\/doi.org\/10.1007\/springer_crossmark_policy","source":"Crossref","is-referenced-by-count":1,"title":["Inference of a plume conduit beneath the R\u00e9union Island from 3D migration of Ps conversions from the mantle transition zone"],"prefix":"10.1038","volume":"15","author":[{"given":"B. Padma","family":"Rao","sequence":"first","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"M. 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