Dolerite dyke

Dolerite dyke

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Caption: Dolerite dyke in the Namib desert. A dyke is an intrusion of igneous rock between an existing layer of rock. Dolerite corresponds to basalt in its chemical composition but in contrast to basalt, which emerges on the surface as lava, the magma in dolerite dykes solidifies underground. Photographed on the Welwitschia drive, Namib desert, Namibia.

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Keywords: africa, african, dolerite, dolerite dyke, dyke, earth science, geological, geology, granite, hill, igneous rock, intrusion, intrusive, namib desert, namibia, rock, rock formation, rocks, volcanic, volcanic rock, welwitschia drive

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