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NINE-POINT RB-SR ISOCHRON [1 record]
Record 1 - internal organization data 2006-11-15
Record 1, English
Record 1, Subject field(s)
- Geophysics
- Chronology
Record 1, Main entry term, English
- nine-point Rb-Sr isochron
1, record 1, English, nine%2Dpoint%20Rb%2DSr%20isochron
correct, see observation
Record 1, Abbreviations, English
Record 1, Synonyms, English
- nine-point Rb/Sr isochron 2, record 1, English, nine%2Dpoint%20Rb%2FSr%20isochron
Record 1, Textual support, English
Record number: 1, Textual support number: 1 CONT
A nine-point, Rb-Sr whole-rock isochron defines an age of 360 +/- 8 m.y. for the pluton (initial /sup 87/Sr//sup 86/Sr = 0.7056 +/- 3). 3, record 1, English, - nine%2Dpoint%20Rb%2DSr%20isochron
Record number: 1, Textual support number: 1 OBS
Holland and Lambert ... carried out Rb-Sr isotopic analyses on a set of 13 samples of pegmatite but the data do not form a single coherent isochron and are, therefore, difficult to interpret. A selected nine-point isochron implies a crystallisation age of 1663 [more or less] 22 Ma with an initial 87Sr/86Sr ratio of 0.705, coincident with that of the Tollie gneisses. ... Holland and Lambert considered that the scatter of points might be the product of an open isotopic system involving variable loss of 87Sr into the host gneisses. If this were the case and if there were no comparable loss of Rb, the upper boundary of the data spread (i.e. the nine-point 1663 Ma isochron) would be expected to give the closest approximation to the age. 4, record 1, English, - nine%2Dpoint%20Rb%2DSr%20isochron
Record number: 1, Textual support number: 2 OBS
nine-point Rb-Sr isochron: term used at Natural Resources Canada - Earth Sciences Sector. 5, record 1, English, - nine%2Dpoint%20Rb%2DSr%20isochron
Record 1, French
Record 1, Domaine(s)
- Géophysique
- Chronologie
Record 1, Main entry term, French
- isochrone Rb-Sr à neuf points
1, record 1, French, isochrone%20Rb%2DSr%20%C3%A0%20neuf%20points
correct, see observation, feminine noun
Record 1, Abbreviations, French
Record 1, Synonyms, French
Record 1, Textual support, French
Record number: 1, Textual support number: 1 OBS
isochrone Rb-Sr à neuf points : terme en usage à Ressources naturelles Canada - Secteur des sciences de la Terre. 2, record 1, French, - isochrone%20Rb%2DSr%20%C3%A0%20neuf%20points
Record 1, Spanish
Record 1, Textual support, Spanish
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