The most common cements in sedimentary rocks are calcite, quartz, and iron oxides.
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Q48: Basalt is mineralogically identical to gabbro.
Q49: Contact metamorphism commonly causes deformation.
Q50: The crust of present-day Earth is only
Q51: The crystals in granite cannot be seen
Q52: Regional dynamothermal metamorphism refers to metamorphism:
A) where
Q54: Volcanic rock forms when magma solidifies within
Q55: Hydrothermal solutions scavenge and concentrate metals from
Q56: Burial metamorphism is occurring today deep within
Q57: Plutonic rocks are usually medium- or coarse-grained,
Q58: Obsidian is volcanic glass where the atoms
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