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Title: A square of Gabbro.
Caption: A square of Gabbro, A mafic igneous rock which is dark and coarse grained. Equivalent chemically to Basalt. This rock underlays the vast majority of Earth's surface.
Credit: Album / World History Archive
Image size: 4237 × 4125 px | 50.0 MB
Print size: 35.9 × 34.9 cm | 1668.1 × 1624.0 in (300 dpi)