Pioneers Escarpment
Additional sedimentation occurred after this, creating non-metamorphic shales, sandstones and greywackes that may date to the Jurassic (200–145 million years ago).
[2] Download coordinates as: Features of the escarpment and neighboring nunataks that are named on the 1983 United States Geological Survey map are (northwest to southeast):[4]
In association with the names of pioneers of polar life and travel grouped in this area, named by the UK-APC in 1971 after Major Frederick George Jackson (1860-1938), English Arctic explorer who in 1895 designed the features of the pyramid tent, later to become standard equipment on British polar expeditions.
[5] Jackson Tooth has a visible band about 50 metres (160 ft) thick of medium grained marble, coloured light grey to white, containing tremolite.
Below this is a band about 100 metres (330 ft) thick of grey marble, with up to 10% of its volume made up of star-like aggregates of chrysotile-asbestos.
Mountain rising to c. 1,400 metres (4,600 ft) to the west of Mount Kelsey in the Pioneers Escarpment, Shackleton Range.
In association with the names of pioneers of polar life and travel grouped in this area, named by the UK-APC in 1971 after Adm. Sir Francis Leopold M'Clintock, RN (1819-1907), British Arctic explorer and pioneer in adopting Eskimo methods of overland travel; he took part in three Franklin search voyages, 1848–54, and commanded Fox, 1857-59, on the voyage to Arctic Canada that finally determined the fate of Sir John Franklin's expedition.
Mountain rising to c. 1,370 metres (4,490 ft) between M'Clintock Bastion and Blanchard Hill in the Pioneers Escarpment, Shackleton Range.
In association with the names of pioneers of polar life and travel grouped in this area, named by UK-APC in 1971 after Henry Kelsey (1670-c. 1729), English employee of the Hudson's Bay company, first white man known to have adopted North American Indian methods of life and travel (including the use of pemmican) in 1691.
The coarse grained marble in other places includes rounded olivines, partly serpentinized, with chondrodite, opaque minerals and quartz.
A nunatak 3 miles (4.8 km) north of Blanchard Hill, rising to 990 metres (3,250 ft) in the Pioneers Escarpment, Shackleton Range.
[13] The hill holds a garnet-mica schist and biotite-garnet-amphibole schist, which is intensely folded, and to the northwest is thrust up onto an intensely folded sequence of quartzite with layers 20 metres (66 ft) thick holding beds about 40 centimetres (16 in) thick of light grey calciphyre.
A cliff rising to c. 1,250 metres (4,100 ft) to the southeast of Whymper Spur in the Pioneers Escarpment, Shackleton Range.
A mountain rising to c. 1,600 metres (5,200 ft) to the southwest of Aronson Corner in the Pioneers Escarpment, Shackleton Range.
[17] Mount Dewar rock types include fine-grained fuchsite quartzite, with a very low proportion of mica, which occurswith amphibolite (as in Sauria Buttress) and microcline gneiss.
Cliffs rising to c. 1,500 metres (4,900 ft) to the east of Mount Dewar in Pioneers Escarpment, Shackleton Range.
In association with the names of pioneers of polar life and travel grouped in this area, named by the UK-APC after Michel Eugène Chevreul (1786-1889), French chemist whose research on the nature of fats in 1823 led to the invention of stearine candles, used subsequently by polar explorers.
A rock knoll rising to c. 1,400 metres (4,600 ft) to the northeast of Chevreul Cliffs in Pioneers Escarpment, Shackleton Range.
A rock buttress rising to c. 1,300 metres (4,300 ft) to the southeast of Lundstrom Knoll in Pioneers Escarpment, Shackleton Range.
In association with the names of pioneers of polar life and travel grouped in this area, named by the UK-APC in 1971 after William B. Lord, Canadian artilleryman and joint author with T. Baines of Shifts and Expedients of Camp Life, Travel and Exploration, London, 1871.
[21] Rocks exposed on Lord Nunatak experienced a Pan-African metamorphic event around 515–500 million years ago.
Nunatak rising to 1,020 metres (3,350 ft) to the east of Bernhardi Heights and 10 miles (16 km) northwest of Jackson Tooth, Pioneers Escarpment, in the Shackleton Range.
