Table T3. Alteration codes used in the alteration log.
Code | Definition |
---|---|
Alteration mineral abundance: | |
1 | <1% |
2 | <10% |
3 | 10%–50% |
4 | 50%–90% |
5 | >90% |
? | Tentative identification |
Alteration assemblage: | |
1 | Serpentine |
2 | Talc/Tremolite/Chlorite |
3 | Greenshist facies mafic |
4 | Amphibolite facies mafic |
5 | Rodingite |
6 | Talc alteration |
7 | Low-grade alteration (clays, zeolites, etc.) |
9 | Other (described as comment) |
Notes: Alteration mineral abundance is used in columns W to AI of the alteration log (see “Supplementary material”). Alteration assemblage is used in column L of the alteration log. See also % confidence column; a high degree of confidence normally indicates thin section observation.
Previous | Close | Next | Top of page