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Robertson Hill : ウィキペディア英語版 | Robertson Hill
Robertson Hill (also Sturges Park or Mount Robertson) is one of the volcanoes in the Auckland Volcanic Field. It's scoria cone reaches 78 metres above sea level (around 28 m above the surrounding land). The scoria cone crater was reshaped into an oval sports field with terraced seating. The scoria cone sits in the centre of a large explosion (maar) crater with the tuff ring arc still present around the south and east sides. ==References==
*''City of Volcanoes: A geology of Auckland'' - Searle, Ernest J.; revised by Mayhill, R.D.; Longman Paul, 1981. First published 1964. ISBN 0-582-71784-1.
抄文引用元・出典: フリー百科事典『 ウィキペディア(Wikipedia)』 ■ウィキペディアで「Robertson Hill」の詳細全文を読む
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