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What is the diagram above called ? 2. Explain and elaborate on the usage of the diagram

What is the diagram above called ? 2. Explain and elaborate on the usage of the diagram

Applications and Investigations in Earth Science (9th Edition)
Applications and Investigations in Earth Science (9th Edition)
9th Edition
ISBN:9780134746241
Author:Edward J. Tarbuck, Frederick K. Lutgens, Dennis G. Tasa
Publisher:Edward J. Tarbuck, Frederick K. Lutgens, Dennis G. Tasa
Chapter1: The Study Of Minerals
Section: Chapter Questions
Problem 1LR
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1. What is the diagram above called ?

2. Explain and elaborate on the usage of the diagram

The diagram below represents rock classification on the basis of SiO2, Na2O and K20, study the diagram and answer the questions therein. Na₂O + K₂0 wt% 14 12 10 8 6 4 2 0 foidite tephrite (ol<10%) phono- tephrite picro- basalt tephri- phonolite basanite (ol>10% trachy basalt basalt Ultrabasic Basic 40 phonolite basaltic trachy- andesite 50 trachy- andesite trachyte (q<20%) trachydacite (q> 20%) basaltic andesite andesite Intermediate 60 SiO₂ wt% dacite rhyolite Silicic or Acid 70 80 Figure 3 Rock classification diagram on the basis of SiO₂ and Na₂O plus K₂O
Transcribed Image Text:The diagram below represents rock classification on the basis of SiO2, Na2O and K20, study the diagram and answer the questions therein. Na₂O + K₂0 wt% 14 12 10 8 6 4 2 0 foidite tephrite (ol<10%) phono- tephrite picro- basalt tephri- phonolite basanite (ol>10% trachy basalt basalt Ultrabasic Basic 40 phonolite basaltic trachy- andesite 50 trachy- andesite trachyte (q<20%) trachydacite (q> 20%) basaltic andesite andesite Intermediate 60 SiO₂ wt% dacite rhyolite Silicic or Acid 70 80 Figure 3 Rock classification diagram on the basis of SiO₂ and Na₂O plus K₂O
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