| 单词 | slaty cleavage |
| 释义 | > as lemmasslaty cleavage slaty cleavage n. Geology the fissile structure in certain rocks, especially in clay slate and similar argillaceous rocks, whereby these split into the thin laminæ or ‘slates’ used in roofing, etc. This structure is quite distinct from, and in origin posterior to, the stratification and jointing, the cleavage-lines crossing these at any and every angle, while parallel to themselves over extensive tracts of country.extracted from cleavagen.< as lemmas |
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