Review Guide For Exam 2
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Review Guide For Exam 2. Igneous Mineralogy Bowen’s Reaction Series Silicate sub-classes; mineral structures and compositions Polytypes Solid solutions Twinning; simple , polysynthetic, penetration Zoning. Igneous Rocks Textures and cooling history

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Review Guide For Exam 2

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Review guide for exam 2

Review Guide For Exam 2

  • Igneous Mineralogy

  • Bowen’s Reaction Series

  • Silicate sub-classes; mineral structures

  • and compositions

  • Polytypes

  • Solid solutions

  • Twinning; simple , polysynthetic,

  • penetration

  • Zoning


Review guide for exam 2

Igneous Rocks

Textures and cooling history

Rock names; compositional

classification and mineralogical

Origin of magmas; decompression,

flux and thermal melting

Gas content and viscosity; controls

and consequences

Water content; role in melting and

explosive volcanism


Review guide for exam 2

  • Tectonic environments

  • Basalts; MORB, OIB (intraplate), Flood

  • Basalts and LIPs, Subduction Zones

  • Know the controls on the production

  • of calc-alkaline versus tholeiitic

  • basaltic magmas

  • Understand layered intrusions and

  • processes of mineral accumulation

  • in a magma chamber


Review guide for exam 2

Andesites and Granites; predominantly

at subduction zones

  • Andesites; fractional crystallization versus contamination

  • Granites; fractional crystallization versus crustal melting

  • Understand Source, Path and

  • Evolution !!!


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