Quiz2
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School
Collin County Community College District *
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Course
1403
Subject
Geology
Date
Feb 20, 2024
Type
Pages
8
Uploaded by alicenguyen615
Question 1 1 / 1 pts
Consider Bowen's Reaction Series, diagrams of which can be found in our textbook and in the lecture slides. Of the minerals listed below, which is the first to melt as temperature increases? Amphibole Correct!
Quartz Olivine Plagioclase Question 2
1 / 1 pts
The igneous rock above... has lots of quartz in it formed below ground Correct!
cooled as gas was escaping is best considered intermediate in Color Index Question 3
1 / 1 pts
All of the following textural terms apply to extrusive rocks except... pyroclastic aphanetic Correct!
pegmatitic vesicular Question 4
1 / 1 pts
The igneous rock above is called diorite and is best described as... Correct!
intermediate, and having formed intrusively felsic, and having formed intrusively ultramafic, and having formed extrusively mafic, and having formed extrusively Question 5
1 / 1 pts
Which of the following magma compositions will be the most viscous? Correct!
felsic
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mafic ultramafic intermediate Question 6
1 / 1 pts
The extrusive equivalent of this rock is... andesite
granite obsidian Correct!
rhyolite Question 7
1 / 1 pts
Which of the following statements is true about igneous rocks and/or processes? There is no heat left inside the Earth from when the planet formed Magma is the name for molten material at the surface Correct!
The mantle is extremely hot but almost entirely solid because of the pressure applied by the crust Decompression melting occurs when oceanic crust goes under a continent Question 8
1 / 1 pts
The conchoidal fracture seen above is characteristic of volcanic glass such as __________. Correct!
obsidian porphyritic andesite tephra dunite
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Question 9
1 / 1 pts
These structures, formed as lava erupts under water, are called... Correct!
pillows bombs laccoliths lahars Question 10
1 / 1 pts
Based on its shape, this volcano is... have eruptions of low-viscosity lava most likely to erupt mafic lava Correct!
called a stratovolcano produce lots of gas, but lo lava, when it erupts