Final answer:
Foliated vs. non-foliated metamorphic rocks and their likelihood of occurrence on Mars and the Moon.
Explanation:
Foliated metamorphic rocks are rocks that have a layered or banded appearance due to the alignment of flat minerals like mica. Examples include rocks like slate, phyllite, and gneiss. Non-foliated metamorphic rocks, on the other hand, do not exhibit layering and can be made up of blocky crystals or a single type of mineral such as marble (calcite).
On Mars and the Moon, due to the lack of significant tectonic activity and geological processes like directed pressure or shear stress that lead to foliation, it is unlikely to find foliated metamorphic rocks. Instead, if any metamorphic rocks are present, they would likely be non-foliated rocks like marble or quartzite formed under low-pressure conditions.
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