Enrique {GCDkit} | R Documentation |
Assigns data for Enrique's diagram into Figaro template (list 'sheet
') and
appropriate values into 'x.data
' and 'y.data
'. The or+ab, 2Q and 4an
coordinates are assigned into matrix 'results
'.
Enrique()
This diagram of Enrique (2018), based on CIPW-normative values, is intended to replace the IUGS QAP plot (Le Maitre et al 2002) if only chemical, and not modal, analyses are available.
The apices are defined as follows:
or+ab = based on normative orthoclase and albite in wt. %
2Q = based on normative quartz in wt. %
4an = based on normative anorthite in wt. %
or+ab + 2Q + 4an = 100 %
The following fields are defined:
1. | quartzolite | 13. | quartz monzodiorite |
2. | quartz-rich granitoid | 14. | quartz diorite |
3. | alk-fsp. granite | 15. | quartz gabbro |
4. | syenogranite | 16. | quartz eucrite |
5. | monzogranite | 17. | alkali-feldspar syenite |
6. | granodiorite | 18. | syenite |
7. | tonalite | 19. | monzonite |
8. | tonalgabbro | 20. | monzodiorite |
9. | tonaleucrite | 21. | diorite |
10. | alk-fsp quartz syenite | 22. | gabbroids |
11. | quartz syenite | 23. | eucritoids |
12. | quartz monzonite | ||
sheet |
list with Figaro Style Sheet data |
x.data, y.data |
or+ab,2Q and 4an data (see details) transformed to orthogonal coordinates |
Vojtěch Janoušek, vojtech.janousek@geology.cz
Enrique P (2018) Clasificación normativa de las rocas plutónicas saturadas y sobresaturadas en sílice basada en la clasificación modal QAP: El diagrama 2Q-(or+ab)-4an. Geogaceta 63:95-98 online pdf
Streckeisen A (1974) Classification and nomenclature of plutonic rocks. Geol Rundsch 63: 773-786 doi: 10.1007/BF01820841
Le Maitre RW et al (2002) Igneous Rocks. A Classification and Glossary of Terms. 2nd edition. Cambridge University Press. doi: 10.1017/CBO9780511535581
CIPW classify figaro plotDiagram
data(sazava) accessVar("sazava") # plots the or+ab - 2Q - 4an ternary diagram for the current dataset plotDiagram("Enrique", FALSE) # classifies the current dataset using the or+ab - 2Q - 4an ternary diagram classify() print(results) classify("Enrique",source.sheet=FALSE)