Hadley Upland
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Hadley Upland () is a triangular shaped remnant plateau with an undulating surface (1,500-1,900 m) in southern Graham Land. It is bounded by Windy Valley and the Martin, Gibbs and Lammers Glaciers. The existence of this upland was known to the United States Antarctic Service (USAS), 1939-41, F. Ronne and C.R. Eklund having travelled along Lammers and Gibbs Glaciers in January 1941. Surveyed by Falkland Islands Dependencies Survey (FIDS) in 1948-50 and 1958. Named by United Kingdom Antarctic Place-Names Committee (UK-APC) after John Hadley (1682-1744), English mathematician who, at the same time as Thomas Godfey, independently invented the quadrant (the forerunner of the sextant), in 1730-31.
This article incorporates text from Hadley Upland, in the Geographic Names Information System, operated by the United States Geological Survey, and therefore a public domain work of the United States Government.
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