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单词 bornhardt
释义
bornhardt

Geology and Earth Sciences
  • Rounded, often isolated hill developed in massive rock and found in the humid tropics. Its shape is controlled by large-scale exfoliation or sheeting joints. Such hills are sometimes called ‘sugar-loaf’ hills, after the granitic dome of the Sugar Loaf, Rio de Janeiro, Brazil.


Geography
  • A dome-shaped rock outcrop more than 30 m high, and sometimes several hundred metres in width, commonly rising above erosional plains in the tropics, but also found in unglaciated uplands in high latitudes. The origin of these features is problematic: faulting, lithological control, cross folding, and contrasts in fracture density have been cited. C. Twidale and J. R. Vidal Romaní (2005) give an excellent summary.


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