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Geology
The symbol of the simple sounding method, shown in planar drawings relating to geotechnical investigations.
Geology
The symbol of in situ permeameter tests, shown in planar drawings relating to geotechnical investigations.
Chile
The granite peaks of the Cordillera Paine in the Chilean Patagonia
USA
Diorite statue of Gudea, Mesopotamia c. 2100 BC, Metropolitan Museum of Art
USA
A diabase dike crosscutting horizontal limestone beds in Arizona
Ireland
The Giant's Causeway in Northern Ireland
Australia
Boulder opal, Carisbrooke Station near Winton, Queensland, Australia
USA
Gold vein stockwork in limonite, from Gold Flake Vein, Farncomb Hill, Breckenridge Mining District, Summit County, Colorado, USA
USA
Distribution of geothermal springs in the US
Hawaii
Aerial view of a lava lake in Pu’u ’Ō’ō crater, east rift zone of Kīlauea. The crater is about 820 ft (250 m) in diameter.
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