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In this study, we investigate the origin of radial anisotropy in the mid\u2010mantle using 3\u2010D geodynamic subduction models combined with mantle fabric simulations. These calculations are compared with seismic tomography images to constrain the range of possible causes of the observed anisotropy. We consider three subduction scenarios: (i) slab stagnation at the bottom of the transition zone; (ii) slab trapped in the uppermost lower mantle; and (iii) slab penetration into the deep lower mantle. For each scenario, we consider a range of parameters, including several slip systems of bridgmanite and its grain\u2010boundary mobility. Modeling of lattice\u2010preferred orientation shows that the upper transition zone is characterized by fast\u2010SV radial anisotropy anomalies up to \u22121.5%. For the stagnating and trapped slab scenarios, the uppermost lower mantle is characterized by two fast\u2010SH radial anisotropy anomalies of \u223c+2% beneath the slab's tip and hinge. On the other hand, the penetrating slab is associated with fast\u2010SH radial anisotropy anomalies of up to \u223c+1.3% down to a depth of 2,000\u00a0km. Four possible easy slip systems of bridgmanite lead to a good consistency between the mantle modeling and the seismic tomography images: [100](010), [010](100), [001](100), and \n<jats:inline-graphic xmlns:xlink=\"http:\/\/www.w3.org\/1999\/xlink\" xlink:href=\"graphic\/ggge22043-math-0001.png\" xlink:title=\"urn:x-wiley:ggge:media:ggge22043:ggge22043-math-0001\"\/>. The anisotropy anomalies obtained from shape\u2010preferred orientation calculations do not fit seismic tomography images in the mid\u2010mantle as well as lattice\u2010preferred orientation calculations, especially for slabs penetrating into the deep lower mantle.<\/jats:p>","DOI":"10.1029\/2019gc008462","type":"journal-article","created":{"date-parts":[[2019,11,13]],"date-time":"2019-11-13T04:16:08Z","timestamp":1573618568000},"page":"5105-5125","update-policy":"https:\/\/doi.org\/10.1002\/crossmark_policy","source":"Crossref","is-referenced-by-count":22,"title":["On the Origin of Radial Anisotropy Near Subducted Slabs in the Midmantle"],"prefix":"10.1029","volume":"20","author":[{"ORCID":"https:\/\/orcid.org\/0000-0002-1954-0889","authenticated-orcid":false,"given":"William","family":"Sturgeon","sequence":"first","affiliation":[{"name":"Department of Earth Sciences, Faculty of Mathematical &amp; Physical Sciences University College London  London UK"}]},{"given":"Ana M.G.","family":"Ferreira","sequence":"additional","affiliation":[{"name":"Department of Earth Sciences, Faculty of Mathematical &amp; 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