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| Russian | English |
| киль синклина | trough of syncline |
| киль структуры | keel of a structure (The strongest gossan development occurs at the keel of a local syncline structure. ArcticFox) |
| литосферный киль | lithospheric keel (shergilov) |
| литосферный киль | lithospheric root (shergilov) |
| литосферный киль | crustal root (shergilov) |