{"record":{"author":{"account_ref":null,"orcid":null},"builds_on":[],"content_schema":"pubphys.content.revision/1","content_sha256":"4c4abd026f57c5cb11e3569ef762a2fd1d4b7272fa177b5631473b54ef943fb9","created":"2026-10-03T07:18:03Z","files":[],"origin":{"assisted_by":[],"kind":"seed"},"parents":["5475cf5dc5b1a72283d26dc95dc6e00d7ea4e00096a7c6492e409a1816eeb011","c13ec9a8045f5cb819e9f9ac6104303ba93b9f2b900933249eac27048cc193cd"],"salt":"27a088b01a39b3d2fb630953b8a519f9dd4bd740f1cf822c5a8d287ec7ccb6ac","schema":"pubphys.record/2","site":"pubphys.com","target":null,"type":"revision"},"content":{"answer_type":"yes-no","assisted_by":[],"external_id":"earth.plate-tectonics.yield-stress-gap","kind":"well-posed","literature_status":"open","n":"1","parents":[{"note":"","parent_revision":"c13ec9a8045f5cb819e9f9ac6104303ba93b9f2b900933249eac27048cc193cd","relation":"special_case"}],"plain":"Computer models only produce Earth-like plates if the outer shell is assumed several times weaker than lab rocks. Whether a realistic weakening process closes that gap is unknown.","posed_since":"","precise":"Mantle convection models give plate-like behavior only for lithospheric yield stresses of roughly $1e9 \\text{ to } 3e9\\,\\mathrm{dyn}/\\mathrm{cm}^{2}$, while laboratory-derived lithospheric strength is of order $1e10\\,\\mathrm{dyn}/\\mathrm{cm}^{2}$. Determine whether a lab-calibrated rheology (grain damage with Zener pinning, low-temperature plasticity, fluid effects) yields plate-like convection in 3D spherical models at Earth parameters. An answer is such a model or a proof that the gap remains.","problem_ref":null,"references":"","settled_by":"Spherical convection simulations with only experimentally constrained rheological parameters showing or failing to show plate-like surface motion.","status_note":"","title":"Can lab-based rock rheology produce plate-like convection?","topic_ref":"88e7a08ea0c1d2f0e59af928067327a0eae8144a9e50f4874c49df2a02aaf5a6"},"attested":{"attestation":{"batch":null,"client_id":null,"id_token_sha256":null,"kind":"platform"},"record_hash":"3cb6ca8838d6b49e7b1c7988343850d19edaa14cd220a18812dfd0a9f6249219","schema":"pubphys.attested/1"},"envelope":{"attested_hash":"d1397cc012d8b0ab75e1ebfdcda7ba5fe75fb2f53e549d78bb80ce15109faae0","platform_signature":{"key_id":"c6afc19b31429869751f06879c75cd64ea92654423d15b44be775bf1310a60da","sig":"o0chz_seSZvAGIe91TAQGahO9zHuDQU_BH69fc6cjtQVDX7XRLO6CQ9E0wC8dSRZhNjh40noVOl0ijsRwe-xCw"},"schema":"pubphys.envelope/1"},"record_hash":"3cb6ca8838d6b49e7b1c7988343850d19edaa14cd220a18812dfd0a9f6249219","leaf_index":1362}