Ball's Pyramid: Difference between revisions

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| photo = Balls Pyramid, Lord Howe Marine Park 1008.jpg
| photo_caption = Ball's Pyramid viewed from the surrounding waters
| elevation_m = 562572
| elevation_ref = <ref>{{cite web |title=Ball's Pyramid |url=https://www.peakbagger.com/peak.aspx?pid=11769 |website=Peakbagger |access-date=17 March 2023}}</ref>
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'''Ball's Pyramid''' is an [[volcanic plug|erosional remnant]] of a [[shield volcano]] and [[caldera]]<ref name="bpe"/> lying {{convert|20.|km}} southeast of [[Lord Howe Island]] in the [[Pacific Ocean]]. It is {{convert|562572|m}} high, while measuring {{convert|1100.|m}} in length and only {{convert|300.|m}} across, making it the tallest volcanic [[stack (geology)|stack]] in the world.<ref>[http://www.lordhoweisland.info/conservation/geo.htm Geography and Geology] {{Webarchive|url=https://web.archive.org/web/20140912073751/http://www.lordhoweisland.info/conservation/geo.htm |date=12 September 2014 }}, Lord Howe Island Tourism Association. Retrieved on 2009-04-20.</ref> Ball's Pyramid is part of the [[Lord Howe Island Marine Park]] in Australia and is over {{convert|643|km}} northeast of [[Sydney]], [[New South Wales]].
 
Steep, eroded, and formed 6.4&nbsp;million years ago,<ref name="bpe"/> Ball's Pyramid is positioned in the centre of a submarine shelf and is surrounded by rough seas, making any approach difficult.<ref name="bpe">{{cite web |last=Woodroffe |first=Colin |date=29 May 2012 |title=Balls Pyramid and the efficacy of marine abrasion |work=Vignettes |publisher=[[Carleton College]] |url=http://serc.carleton.edu/vignettes/collection/35376.html |access-date=9 July 2013}}</ref>