Questions and Answers
A felsic magma has ____________ compared to a mafic magma.
rich silica
Chemical sedimentary rocks are classified primarily on the basis of ____________.
mineral composition
Which of the following is not an example of a clastic sedimentary rock?
Which of the following places the formation of clastic sedimentary rocks in the proper sequence?
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Which of the following sedimentary rocks would have this description: round, gravel-sized grains?
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Clastic (or detrital) sedimentary rocks are primarily classified by ____________.
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Lithified detritus (fragments of preexisting rocks) form which kind of sedimentary rock?
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What is the link to the geology resource?
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Study Notes
Felsic vs. Mafic Magma
- Felsic magma is rich in silica compared to mafic magma, which has lower silica content.
Classification of Chemical Sedimentary Rocks
- Chemical sedimentary rocks are primarily classified based on their mineral composition.
Clastic Sedimentary Rocks
- Coal is not considered a clastic sedimentary rock; examples of clastic rocks include breccia, shale, and sandstone.
Sequence of Clastic Sedimentary Rock Formation
- The proper sequence for the formation of clastic sedimentary rocks includes weathering, erosion, deposition, and lithification.
Characteristics of Conglomerate
- Conglomerate is identified by its round, gravel-sized grains, making it distinct among sedimentary rocks.
Classification of Clastic Sedimentary Rocks
- Clastic (or detrital) sedimentary rocks are classified primarily by grain size, which affects their characteristics and naming.
Origin of Clastic Sedimentary Rocks
- Clastic sedimentary rocks form from lithified detritus, which consists of fragments from preexisting rocks.
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Test your knowledge with these flashcards for Geology Exam 2. Each card includes key concepts and definitions related to igneous and sedimentary rocks. Perfect for students preparing for their geology exams.
