GEOL 1403 Lab 3 - igneous rocks questions and answers 2025
Rhyolite
Felsic
Aphanitic
Extrusive
1 stage of rapid cooling - answer Name
Composition
Texture
Intrusive or Extrusive
Cooling history
Granite
Felsic
Phaneritic
Intrusive
1 stage of slow cooling - answer Name
Composition
Texture
Intrusive or Extrusive
Cooling history
Rhyolite Porphyry
Felsic
Porphyritic Aphanitic
Extrusive
2 cooling stages (1st is slow, 2nd is rapid) - answer Name
Composition
Texture
Intrusive or Extrusive
Cooling history
, Granite
Felsic
Phaneritic
Intrusive
1 stage of slow cooling - answer Name
Composition
Texture
Intrusive or Extrusive
Cooling history
Dunite
Ultramafic
Phaneritic
Intrusive
1 stage of slow cooling - answer Name
Composition
Texture
Intrusive or Extrusive
Cooling history
Obsidian
Felsic-Intermediate
Glassy
Extrusive
1 stage of rapid cooling in silica-rich magma - answer Name
Composition
Texture
Intrusive or Extrusive
Cooling history
Rhyolite
Felsic
Aphanitic
Extrusive
1 stage of rapid cooling - answer Name
Composition
Texture
Intrusive or Extrusive
Cooling history
Granite
Felsic
Phaneritic
Intrusive
1 stage of slow cooling - answer Name
Composition
Texture
Intrusive or Extrusive
Cooling history
Rhyolite Porphyry
Felsic
Porphyritic Aphanitic
Extrusive
2 cooling stages (1st is slow, 2nd is rapid) - answer Name
Composition
Texture
Intrusive or Extrusive
Cooling history
, Granite
Felsic
Phaneritic
Intrusive
1 stage of slow cooling - answer Name
Composition
Texture
Intrusive or Extrusive
Cooling history
Dunite
Ultramafic
Phaneritic
Intrusive
1 stage of slow cooling - answer Name
Composition
Texture
Intrusive or Extrusive
Cooling history
Obsidian
Felsic-Intermediate
Glassy
Extrusive
1 stage of rapid cooling in silica-rich magma - answer Name
Composition
Texture
Intrusive or Extrusive
Cooling history