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LONGRAIN [1 record]
Record 1 - internal organization data 2003-07-22
Record 1, English
Record 1, Subject field(s)
- Petrography
- Quarries
Record 1, Main entry term, English
- grain
1, record 1, English, grain
correct
Record 1, Abbreviations, English
Record 1, Synonyms, English
Record 1, Textual support, English
Record number: 1, Textual support number: 1 DEF
A second direction of splitting, less pronounced than the rift and usually at right angles to it. 2, record 1, English, - grain
Record number: 1, Textual support number: 1 OBS
A quarrymen's term for a plane of parting in a metamorphic rock, e.g. slate, that is perpendicular to the flow cleavage; or for a direction of parting in massive rock, e.g. granite. 3, record 1, English, - grain
Record 1, French
Record 1, Domaine(s)
- Pétrographie
- Carrières
Record 1, Main entry term, French
- longrain
1, record 1, French, longrain
correct, masculine noun
Record 1, Abbreviations, French
Record 1, Synonyms, French
- grain 2, record 1, French, grain
correct, masculine noun
Record 1, Textual support, French
Record number: 1, Textual support number: 1 DEF
Orientation générale des petits éléments qui composent le schiste ardoisier [et qui constitue] une direction de cassure privilégiée. 3, record 1, French, - longrain
Record number: 1, Textual support number: 1 CONT
La direction de clivage privilégié, présentée par certains granites mais non par tous, est souvent nommée «rift». [...] On trouve un second clivage moins facile, approximativement à angle droit du premier. Il se nomme «grain» [...] Ces clivages sont tantôt constants, tantôt variables d'un point à l'autre d'un massif granitique étendu. [...] Souvent l'un est presque vertical et l'autre plus ou moins horizontal, et ils se coupent suivant la direction d'étirement du granite. 4, record 1, French, - longrain
Record number: 1, Textual support number: 2 CONT
Lorsque ce débitage [en feuillets parallèles] est facile la roche est dite fissile (ardoises). Dans ces roches, les carriers appellent grain ou longrain une seconde direction de clivage facile qui favorise leur exploitation. 5, record 1, French, - longrain
Record 1, Spanish
Record 1, Textual support, Spanish
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