- What is the thinnest layer of the Earth?
- When two continental plates pull apart a __________ forms
- Shield volcanoes produce lava that is primarily_______in composition.
- Most magma of earth is produced at____plate boundaries.
- All types of volcanic cones share which feature?
- The partial melting of______ will yield mafic (basaltic) magma.
- Which of the following is a characteristic of an igneous rock found in a batholith?
- The most abudant gas found in magma is______.
- Which type of volcanic hazard can decrease global temperatures?
- Basaltic magmas have a_____viscosity, whereas rhyolitic magmas have a_____viscosity.
- Which of the following geologic regions creates volcanic arcs?
- The major difference between phaneritic and aphanitic texture is______.
- Which of the following would decrease the viscosity of magma?
- which nonsilicate mineral has carbonate as a negatively charged complex ion?
- An igneous rock with a____ texture solidified deep within Earth.
- Change in a magma's composition due to melting of surrounding country rock is called______.
- Stocks differ from batholiths because of their______.
- Which component of magma includes mobile ions of silicon?
- Which of these minerals would be the first to crystallize in a body of magma?
- The most abundant minerals found in granitic (fells) igneous rocks include______.