Herbert Mountains

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Herbert Mountains
Shackleton Range. Herbert Mountains in the center, north (top)
Geography
Herbert Mountains is located in Antarctica
Herbert Mountains
Range coordinates80°20′S 25°30′W / 80.333°S 25.500°W / -80.333; -25.500

The Herbert Mountains (80°20′S 25°30′W / 80.333°S 25.500°W / -80.333; -25.500) are a conspicuous group of rock summits on the east side of Gordon Glacier in the Shackleton Range of Antarctica. They were first mapped in 1957 by the Commonwealth Trans-Antarctic Expedition and named for Sir Edwin S. Herbert, Chairman of the Finance Committee and a Member of the Committee of Management of the expedition, 1955–1958.[1]

Rocks in the Herbert Mountains include gneisses of migmatite and pyroxene-biotite, schists of garnet-kyanite and minor occurrences of quartzite, Marble and calc-silicates. There is post-tectonic basalt in Mount Sheffield that may be connected with from the Jurassic Ferrar Dolerite. The age of rock samples from the Sumgin Buttress very from c. 268 million years for fuchsite, quartz schist to c. 434 million years for whole rock and amphibolite. These dates may be understated due to the loss of radiogenic Argon-40.[2]

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