Geography · Rocks and Minerals
Which of the following is a coarse-grained, dark-colored, intrusive igneous rock that is widely used as a concrete aggregate, road base material, and crushed stone for railroad ballast?
Verified Solution4 OptionsUpdated: October 2026👁️1 View
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- 1Sandstone
- 2Gabbro✓
- 3Conglomerate
- 4Quartzite
Correct answer
Gabbro
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