| 词条 | Elysium Mons |
| 释义 |
|name = Elysium Mons |image = |caption = 2001 Mars Odyssey THEMIS daytime infrared image mosaic |coordinates = {{coord|25.02|N|147.21|E|globe:mars_type:landmark|display=inline,title}} |coordinates_footnotes = [1] |peak = {{convert|13.9|km|ft}} above plains {{convert|16|km|ft}} above datum |discoverer = Mariner 9 }} Elysium Mons is a volcano on Mars located in the volcanic province Elysium, at {{Coord|25.02|N|147.21|E|globe:Mars_type:mountain_source:gpn}}, in the Martian eastern hemisphere. It stands about {{convert|12.6|km|ft|abbr=on}} above its base,[2] and about {{convert|14.1|km|ft|abbr=on}} above the Martian datum,[2] making it the third tallest Martian mountain in terms of relief and the fourth highest in elevation. Its diameter is about {{convert|240|km|mi|abbr=on}}, with a summit caldera about {{convert|14|km|mi|abbr=on}} across. It is flanked by the smaller volcanoes Hecates Tholus to the northeast, and Albor Tholus to the southeast. DiscoveryElysium Mons was discovered in 1972 in images returned by the Mariner 9 orbiter. Terrestrial analogThe terrestrial volcano Emi Koussi (in Chad) has been studied as an analog of Elysium Mons. The two shield volcanoes have summit calderas of similar size, but Elysium Mons is 3.5 times larger in diameter and 6 times higher than its counterpart on Earth. Possible source of nakhlitesA 6.5 km diameter crater at 29.674 N, 130.799 E, in the volcanic plains to the northwest of Elysium Mons has been identified as a possible source for the nakhlite meteorites, a family of similar basaltic Martian meteorites with cosmogenic ages of about 10.7 Ma, suggesting ejection from Mars by a single impact event. The dates of the igneous rocks of the nakhlites range from 1416 ± 7 Ma to 1322 ± 10 Ma. These dates plus the crater dimensions suggest a growth rate of the source volcano during that interval of 0.4–0.7 m per Ma, far slower than would be expected for a terrestrial volcano. This implies that Martian volcanism had slowed greatly by that point in history.[3] {{clear}}GalleryInteractive Mars map{{Mars map}}See also
References1. ^{{gpn|1783|Elysium Mons}} 2. ^1 {{cite journal|last1=Plescia|first1=J. B.|title=Morphometric properties of Martian volcanoes|journal=Journal of Geophysical Research|volume=109|issue=E3|pages=E03003|date=2004|issn=0148-0227|doi=10.1029/2002JE002031|bibcode = 2004JGRE..109.3003P }} 3. ^{{cite journal|last1= Cohen|first1=B. E.|last2= Mark|first2=D. F.|last3= Cassata|first3=W. S.|last4= Lee|first4=M. R.|last5= Tomkinson|first5= T.|last6= Smith|first6=C. L.|title= Taking the pulse of Mars via dating of a plume-fed volcano|journal= Nature Communications|volume= 8|issue= 1|year= 2017|doi= 10.1038/s41467-017-00513-8|bibcode=2017NatCo...8..640C}} External links{{Commons category|Elysium Mons}}
2 : Volcanoes of Mars|Mountains on Mars |
| 随便看 |
|
开放百科全书收录14589846条英语、德语、日语等多语种百科知识，基本涵盖了大多数领域的百科知识，是一部内容自由、开放的电子版国际百科全书。