Rock classification templates

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Ewart (1982)
SiO2 vs. K2O
*Emphasis on andesitic-basaltic composition range 






Le Bas et al. (1986)
SiO2 vs. Na2O+K2O
*Use for volcanic rocks 

Rock classification templates
Series discriminant templates
Le Bas 1986. Na2O + K2O vs SiO2. TAS diagram
 K2O vs. SiO2. Ewart 1982
Tectonic discriminant templates
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Streckeisen (1967)
Qtz-Af-Pf
Felsic & plutonic classification

Barker (1979)
An-Ab-Or
Tonalite to granite classification

Streckeisen (1967) Felsic and plutonic classification diagram
Barker (1979). Tonalite to granite classification diagram (An-Ab-Or)

*Please note that all the ternary diagrams were constructed in the Excel package Ternplot (Marshall, 1996). Acknowledge the use of this program.  

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Winchester & Floyd (1977)
Volcanic rocks
*Ideal for altered rocks as these plots use the immobile trace elements

Winchester and Floyd SiO2 vs Zr/Ti diagram.
Winchester and Floyd (1977) Zr/Ti vs Nb/Y diagram
Winchester and Floyd SiO2 vs Nb/Y diagram
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Series discriminant templates

Hastie et al. (2007)
Volcanic rocks
*Ideal for weathered and metamorphosed rocks as this plot uses immobile trace elements

Hansen et al. (2002)
Discriminate between Archean TTG suites +  "adakites" vs. volcanic arc array

Hansen et al. (2002). Sr/Y vs Y diagram.
Hansen et al. (2002). La/Yb(n) vs Yb(n) diagram.
Hastie et al. 2007 (Th vs Co). Ideal for weathered and metamorphosed rocks
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Frost et al. (2001)
A classification for granitic rocks

Frost & Frost (2008)
A classification for feldspathic igneous rocks

Discriminate between Ferroan and Magnesian rocks
Frost and Frost (2008). Feldspathic igneous rocks
Frost et al. 2001. Alkalic to calcic rocks
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Irvine & Baragar (1971)
Discriminate between tholeiitic & calc-alkaline series

Irvine and Baragar (1971). Discriminate between tholeiitic and calc-alkaline series.
Irvine and Baragar (1971). Discriminate between alkaline and sub-alkaline series.
Irvine and Baragar (1971). Discriminate between calc-alkaline and tholeiitic series.
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Winchester & Floyd (1976)
Discrimination diagram for basalts

Winchester and Floyd (1976). Discriminate alkali and tholleiitic basalt
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Tectonic discriminant templates
     
      Mafic to intermediate rocks

Pearce & Cann (1973)
*Uses the immobile elements
Discriminate between arc, ocean floor and within-plate basalts

Wood (1980)
Discriminate between within-plate basalts, MORB & arc.

Pearce and Cann (1973). Discriminate Ocean floor basalts, island arc basalts, calc-alkaline basalts
Wood (1980). Discriminate between within-plate basalts, MORB and arc
Pearce and Cann (1973). Discriminate between arc, ocean floor and within-plate basalts.
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Cabanis & Lecolle (1989)
Discriminate between within-plate basalts, MORB & arc.

Meschede (1986)
Discriminate between different types of MORB & continental tholeiites

Mullen (1983)
Discriminate between arc basalts, OIB, MORB & boninites

Mullen (1983). For basalts and basaltic andesites.
Cabanis and Lecolle (1989). Discriminate between within-plate basalts, MORB and arc.
Meschede (1986). Discriminate between MORB and continental tholeiites.
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Pearce & Norry (1979)
Discriminate arc-type basalts, MORB & within-plate basalts.

Hollocher et al. (2012)
Discriminate arc-type basalts, MORB & ocean island basalt. 

Hollocher et al. (2012). Discriminate arc-type basalts, MORB and OIB.
Pearce and Norry (1979). Discriminate arc-type basalts, MORB and within-plate basalts.
Hollocher et al. (2012). Discriminate oceanic arcs, continental arcs, alkaline arcs, MORB, Oceanic island
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Pearce (1983)
Discriminate volcanic arc (continental & oceanic) vs. mantle melting array. 

Pearce & Gale (1977)
Discriminate within-plate basalts from plate margin basalts.

Pearce (1983). Discriminate volcanic arc (continental and oceanic) vs. mantle melting array.
Pearce (1983). Continental arcs and oceanic arcs.
Pearce & Gale (1977). Discriminate within-plate basalts from plate margin basalts.
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Pearce (1976)
These diagrams use the major elements. 
*Consider the effects of alteration and crystal fractionation.

Pearce 1976. Major element discrimination diagrams. Download the templates from Geoplotters.
Pearce 1976. Major element discrimination diagram. Download the templates from Geoplotters.
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      Intermediate to felsic rocks

Pearce et al. (1984)
Discriminate within-plate granites, volcanic arc granites & ocean ridge granites.

Pearce 1984. Discriminate tectonic regime for granites.
Tectonic discriminant diagram for  granites. Pearce et al. 1984
Pearce et al. 1984. Volcanic arc granites, within-plate granites. geoplotters.
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Eby (1992)
Discriminate A1 & A2 anorthogenic granites.
*Note your granites must be A-type granites for these plots.

Eby (1992) Nb_Y_Ga. Discriminate anorthogenic granites
Eby (1992). Discriminant for A1 & A2 type granites.
Tectonic discriminant diagram. Pearce. Geochemistry. Granites. Geoplotters.
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Whalen et al. (1987)
Discriminate A-type granites over other types of granite .
 

Whalen et al. 1987
Whalen et al. 1987
Whalen et al. 1987
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Whalen et al. 1987
Whalen et al. 1987
Whalen et al. 1987
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Whalen et al. 1987
Whalen et al. 1987
Whalen et al. 1987
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Whalen et al. 1987
Whael et al 1987
Whalen et al 1987
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Mineralogical discriminant templates
     
   

Morimoto (1988)
Determine pyroxene nomenclature. 
*There is a useful program (PX-NOM) by Strum (2002) to determine the structural formulae of pyroxenes.


Feldspar discriminant plot (An-Ab-Or).

Morimoto (1988) pyroxene nomenclature plot. Download the template from Geoplotters.
Download feldspar plot (Ab-An-Or). Geoplotters
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