Igneous Rocks. Chapters 3 & 4. Arcadia Nat’l Park, Maine. How do Igneous Rocks form? What is Magma ? What is Lava ? How do they form? What are the two categories of igneous rocks? How does each type form? How are plutons & volcanoes related?. How Hot Is Lava?.
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Chapters 3 & 4
Arcadia Nat’l Park, Maine
How do Igneous Rocksform?
What is Magma?
What is Lava?
How do they form?
How are plutons & volcanoes related?
Where are Magma Chamber located?
How does pressure affect the melting point of a rock?
What is Aphanitic texture and what does it indicate?
What is Phaneritic texture & what does it indicate?
What is the most abundant constituent of magma?
What are the 4 Magma Modification Processes?
What is Assimilation?
How does it affect a magma’s composition?
What is Bowen’s Reaction Series?
Rhyolite (A) Granite (B) [most common intrusive rock]
Pegmatites composition? are __________________ (grains >1 cm in diameter) & are mineralogically similar to ______.
Intermediate composition? contain _________ amts of _________ colored ferromagnesian silicates, & _________ colored feldspar.
Andesite (A) Diorite (B)
[erupts from island arcs]
Mafic rocks are ______colored b/c they’re largely composed of ______________________________________.
Basalt (A) Gabbro (B)
Ultramafic composition?are _____ colored b/c they are comp. of ________________________________ silicates.
What are Peridotites composed of olivine?
Where are Peridotites formed?
What is Volcanic Glass composed of? composition?
What rock type has a similar composition?
Why can volcanic glass be different colors?
What are vesicles & how are they formed?
What are Tuffs? composition?
How do magmas move? composition?
What is Magma type at Divergent Margins & Hot Spots?
What are the Magma Types at Convergent Margins?
How are these magmas