International Union of Geological Sciences Subcommission on the Systematics of Igneous Rocks ...

During the past two-and-a-half years of traversing the central part of Gusev Crater, NASA’s Mars Exploration Rover Spirit has analyzed the brushed and ground-into surfaces of multiple rocks using the ...

THE closing years of the nineteenth century witnessed a revival of interest in the petrology of gneous rocks, which must be regarded as marking an important stage in the development of that subject.

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