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Questions and Answers
Which type of rocks are silica-saturated with high Sr/Y and La/Yb ratios and low HFS concentrations?
Which type of rocks are silica-saturated with high Sr/Y and La/Yb ratios and low HFS concentrations?
- Andesites
- Adakites (correct)
- Basalts
- Boninites
What distinctive group of rocks dominate over andesites in backarc basins?
What distinctive group of rocks dominate over andesites in backarc basins?
- Adakites
- MORB
- Tholeiites
- Backarc basin basalts (correct)
Which type of volcanic rocks contain phenocrysts of orthopyroxene, high magnesium groundmass, and notably lack plagioclase phenocrysts?
Which type of volcanic rocks contain phenocrysts of orthopyroxene, high magnesium groundmass, and notably lack plagioclase phenocrysts?
- Boninites (correct)
- Adakites
- Andesites
- Basalts
In the context of island arcs, what do young island arc systems low in intermediate volcanic rocks contain?
In the context of island arcs, what do young island arc systems low in intermediate volcanic rocks contain?
What do Adakites have in terms of their rare chemical composition?
What do Adakites have in terms of their rare chemical composition?
What is characteristic of backarc basin basalts (BAB) in comparison to MORB?
What is characteristic of backarc basin basalts (BAB) in comparison to MORB?
What type of magma is typically erupted by mantle hotspots beneath oceanic intraplate magmatism?
What type of magma is typically erupted by mantle hotspots beneath oceanic intraplate magmatism?
How are seamounts defined geologically?
How are seamounts defined geologically?
What distinguishes Ocean island basalts (OIB) from Mid-Ocean Ridge Basalts (MORB)?
What distinguishes Ocean island basalts (OIB) from Mid-Ocean Ridge Basalts (MORB)?
What is a possible explanation for the distinct chemistry of Ocean island basalts (OIB)?
What is a possible explanation for the distinct chemistry of Ocean island basalts (OIB)?
Which type of landform constitutes the highest mountains on Earth, with a relief of approximately 10 km high?
Which type of landform constitutes the highest mountains on Earth, with a relief of approximately 10 km high?
What is the distinguishing characteristic of Oceanic plateaus compared to other oceanic landforms?
What is the distinguishing characteristic of Oceanic plateaus compared to other oceanic landforms?
What type of basalts dominate the exposed volcanic rocks of the Hawaiian Islands?
What type of basalts dominate the exposed volcanic rocks of the Hawaiian Islands?
Which oceanic plateau, located near the Solomon Islands, is considered the largest on Earth?
Which oceanic plateau, located near the Solomon Islands, is considered the largest on Earth?
What type of volcanism is responsible for producing continental flood basalts?
What type of volcanism is responsible for producing continental flood basalts?
Which type of volcanic deposits are associated with the Ontong – Java Plateau?
Which type of volcanic deposits are associated with the Ontong – Java Plateau?
What is the approximate distance covered by the chain of seamounts and islands generated by the Hawaiian hotspot?
What is the approximate distance covered by the chain of seamounts and islands generated by the Hawaiian hotspot?
Which type of rocks are examples of huge outpourings of continental flood basalts?
Which type of rocks are examples of huge outpourings of continental flood basalts?
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