other classifications. modal mineralogy major elements normative compositions cationic proportions...
TRANSCRIPT
Other Other classificationsclassifications
• Modal mineralogy
• Major elements
• Normative compositions
• Cationic proportions
• Trace elements
Classifications based on modal mineralogy
Lamprophyres nomenclatures
Classifications based on modal mineralogy
Charnockite nomenclature
Classifications based on major elements
AFM
A M
F
Tholeiite Series
Calc-alkaline Series
AFM diagram
TAS (Cox, 1979 version)
Classifications based on major elements
TAS (Wilson, 1989 version after Cox)
Classifications based on major elements
Hi-Mg volcanic rocks (derived from TAS)
Classifications based on major elements
Classification of sub-alkaline lavas
Classifications based on major elements
Classification based on normative composition
Streckeisen & LeMaitre: normative version of a QAP/F
Basalts and related rocks
Classification based on normative composition
O’Connor diagram for quartz-bearing plutonic rocks
Classification based on normative composition
Shand, 1943. A/CNK vs. A/NK
Classification based on cationic proportions
Metaluminous Peraluminous
Peralkaline
0.6 0.8 1.0 1.2 1.4 1.6 1.8 2.0
01
23
45
67
A/CNK
A/N
K
De la Roche et al. R1-R2 diagram
Classification based on cationic proportions
Batchelor-Bowden interpretation of de la Roche’s diagram
Classification based on cationic proportions
MantleFractionates
Pre-plateCollisionPost-
collisionUplift
Late-orogenic
AnorogenicSyn-collision
Post-orogenic
-1000 0 1000 2000 3000 4000
01000
2000
3000
4000
R1= 4Si - 11(Na + K) - 2(Fe + Ti)
R2=
6C
a +
2M
g +
Al
OrAb
AnSp
Bt
Ph
En
Fs
Di
Fo
Fa
Hd
Ha
Jensen cationic plot
Classification based on cationic proportions
Pearce diagrams (for granites)
“Classification” based on trace elements
Wood diagrams (for basalts)
“Classification” based on trace elements