Geology Questions
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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______.