10 Questions
What type of rocks result from slow cooling of magma?
Coarse-grained plutonic rocks
Which rock types are more plentiful among plutonic rocks than the others combined?
Granites and granodiorites
What is the result of rapid cooling during an eruption?
Finer-grained volcanic rocks
Which mineral is formed when the melt is deficient in silica?
Nepheline
What factor influences the rate of chemical weathering during soil formation?
Chemical variations in various rock types
What is the primary reason that sedimentary rocks are important for soil formation?
They are less consolidated than igneous rocks, allowing for more rapid biotic invasion and deep, productive soil development.
Which of the following is NOT a type of sedimentary rock mentioned in the passage?
Gneiss
What is the primary mechanism by which calcium carbonate and dolomite accumulate in sedimentary limestone deposits?
Chemical and biochemical precipitation in ocean waters.
Which type of metamorphic rock is formed by the compression and alteration of shales and mudstones?
Slate
What is the defining characteristic of quartzite, a metamorphic rock?
It is highly resistant to weathering due to its high quartz content.
Explore the composition and formation of igneous rocks, ranging from ultrabasic to acidic rocks, resulting from the cooling of magma or silica melts. Learn about the differences between coarse-grained plutonic rocks and fine-grained volcanic rocks, such as granites and granodiorites.
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