NATURAL HISTORY MUSEUM, LONDON / SCIENCE PHOTO LIBRARY NATURAL HISTORY MUSEUM, LONDON / SCIENCE PHOTO LIBRARY
Diorite intruded by microgranite. Geological specimen collected during Scott's British Antarctic Expedition 1910-1913 (also known as the Terra Nova expedition). This sample shows the power of geological forces. The pale microgranite vein has forced its way through the black diorite, breaking off fragments in the process.
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