| 词条 | Mahuika crater |
| 释义 |
Mahuika crater is a submarine feature that is hypothesized to be an impact crater. It is about 20 ± 2 km (12.4 ± 1.2 mi) wide and over {{convert|153|m|ft|sp=us}} deep and lies on the New Zealand continental shelf at 48.3 South and 166.4 East,[1] to the south of The Snares. The Mahuika crater is named after the Māori god of fire. However, there is debate about its origins. Initial discoveryThe crater was reported and named by Dallas Abbott and her colleagues from the Lamont-Doherty Earth Observatory at Columbia University.[2] Based on elemental anomalies, fossils, and minerals, which are interpreted to be derived from the impact, found in an ice core from the Siple Dome in Antarctica, it is argued that the impact which created the Mahuika crater occurred around 1443 AD,[3] but other sources have placed the date as 13 February 1491 AD.[4] Some evidence suggests that the tsunami it caused was observed by aborigines and entered into their mythology.[5][6] Debate on the originIn 2010 a paper was published in Marine Geology which critically analysed Abbott's claims regarding the origin of the Mahuika crater. The researchers determined that there was no evidence to indicate a comet created the crater, and therefore the possibility of an impact causing the tsunami was highly unlikely.[4] See also
References1. ^Myth and Geology, Volume 273 of Special publication - Geological Society of London, Luigi Piccardi, W. Bruce Masse, Geological Society of London, 2007, page 203, {{ISBN|1862392161}}, 9781862392168 2. ^Abbott, D.H., A. Matzen, E.A. Bryant, and S.F. Pekar (2003) Did a bolide impact cause catastrophic tsunamis in Australia and New Zealand? Geological Society of America Abstracts with Programs. 35:168. 3. ^Abbott, D.H., P. Biscaye, J. Cole-Dai, and D. Breger, 2005, Evidence from an Ice Core of a Large Impact Circa 1443 A.D. American Geophysical Union, Fall Meeting 2005, abstract #PP31C-05. 4. ^1 {{Cite journal|author=Goff, James|year=2010|title=Analysis of the Mahuika comet impact tsunami hypothesis|journal=Marine Geology|volume=271|issue=3/4|pages=292–296|doi=10.1016/j.margeo.2010.02.020|display-authors=etal|bibcode=2010MGeol.271..292G}} 5. ^{{Cite journal|author1=Hamacher, Duane W. |author2=Norris, Ray P. |lastauthoramp=yes |year=2009 |title=Australian Aboriginal Geomythology: Eyewitness Accounts of Cosmic Impacts? |journal=Archaeoastronomy: The Journal of Astronomy in Culture |volume=22 |pages=62–95, pages 68–69 |url=http://www.atnf.csiro.au/people/Ray.Norris/papers/n243.pdf |archiveurl=https://www.webcitation.org/6T88cySZJ?url=http://www.atnf.csiro.au/people/Ray.Norris/papers/n243.pdf |archivedate=6 October 2014 |deadurl=no |arxiv=1009.4251 |bibcode=2009Arch...22...62H |df= }} 6. ^{{Cite book|author=Bryant, E.A.|author2= Walsh, G.|author3=Abbott, D.H. |year=2007|chapter=Cosmogenic Mega-Tsunami in the Australia Region: Are They Supported by Aboriginal and Maori Legends?|editor=Piccardi, L. |editor2=Masse, W. Bruce|series=Geological Society Special Publication No. 273|title=Myth and Geology|publisher=Geological Society|location=London|pages=203–214|isbn=978-1-86239-216-8|url=https://books.google.com/books?id=F7pZfLUoHJIC&pg=PA203}} External links
Further reading
5 : Geology of New Zealand|Possible impact craters on Earth|Holocene impact craters|Tsunamis in New Zealand|New Zealand seafloor (oceanography) |
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