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10 Types of Landscaping Rocks Every Homeowner Should KnowFlat field rocks often don’t require mortar, and they can also be used as stepping stones to create garden paths. Large flat fieldstone can serve as seats around a firepit. Lava rock ...
"We can also date when igneous rocks crystallized ... Schmidt et al, Diverse and highly differentiated lava suite in Jezero crater, Mars: Constraints on intracrustal magmatism revealed by Mars ...
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