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词条 Naolinco volcanic field
释义

  1. Geologic context

  2. The field

  3. Eruptive history

  4. References

      Sources  
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Naolinco volcanic field is a volcanic field in Veracruz, Mexico.{{sfn|Siebert|Carrasco-Núñez|2002|p=202}} It lies in the region of the cities of Jalapa and Naolinco,{{sfn|Siebert|Carrasco-Núñez|2002|p=181}} and the town of Naolinco lies in the field.{{sfn|Siebert|Carrasco-Núñez|2002|p=184}}

Geologic context

The Trans-Mexican Volcanic Belt is best known for calc-alkaline volcanoes such as Pico de Orizaba and Popocatepetl stratovolcanoes as well as calderas and pyroclastic cones; however it also features scattered alkali basalt volcanism. It lies at an angle to the Middle America Trench unlike the more typical volcanic arcs of Central America;{{sfn|Siebert|Carrasco-Núñez|2002|p=180}} some theories consider the belt to be independent from the trench.{{sfn|Rodríguez|Morales-Barrera|Layer|González-Mercado|2010|p=149}} In its eastern region lies the Cofre de Perote and a group of volcanoes including the Naolinco Volcanic Field.{{sfn|Siebert|Carrasco-Núñez|2002|p=183}}

Sometimes it and some neighbouring monogenetic volcanoes such as those at Cofre de Perote are included into a "Xalapa volcanic field", which would have about 50 volcanic centres.[2] Despite their location, they are most likely unrelated to Cofre de Perote itself.{{sfn|Siebert|Carrasco-Núñez|2002|p=183}}

The field

The Naolinco Volcanic Field lies in the Sierra de Chiconquiaco.{{sfn|Siebert|Carrasco-Núñez|2002|p=183}} It includes the volcanic cones of Cerro Acatlan, which is the largest cone in the field, Cerro el Hoyo, two Cerro Gordo cones, Cerro Organo and Pueblo Viejo.{{sfn|Siebert|Carrasco-Núñez|2002|p=186}} The cone Rincon de Chapultepec has a crater {{convert|275|m}} wide.{{sfn|Siebert|Carrasco-Núñez|2002|p=190}} The individual centres appear to be aligned in a northeast-southwest direction.{{sfn|Rodríguez|Morales-Barrera|Layer|González-Mercado|2010|p=150}} Lava flows from Naolinco volcanoes have flowed south.{{sfn|Siebert|Carrasco-Núñez|2002|p=184}} Pyroclastic material is also found in the area.

Eruptive history

Potassium-argon dating of the field has yielded ages of 1.2 and 0.82 million years ago.[5] Volcanic products at Naolinco are mainly basaltic.

The most recent activity at Naolinco occurred at Rincon de Chapultepec, which erupted the Coacotzintla lava flow 2,980 years before present.[2] This lava flow reached a length of {{convert|6|km}} and a surface area of {{convert|8.1|km2}}; the total volume of lava is about {{convert|122,000,000|m3}}.{{sfn|Siebert|Carrasco-Núñez|2002|p=185}} Two other lava flows were erupted by the cone, one of which is buried by scoria.{{sfn|Siebert|Carrasco-Núñez|2002|p=190}}

Future eruptions of Naolinco, especially very voluminous ones, may endanger towns and cities in the area,{{sfn|Siebert|Carrasco-Núñez|2002|p=200}} although most of them would affect the sparsely populated Naolinco valley unless fairly long.{{sfn|Siebert|Carrasco-Núñez|2002|p=202}}

References

1. ^{{Cite journal|last=Orozco-Esquivel|first=Teresa|last2=M. Petrone|first2=Chiara|last3=Ferrari|first3=Luca|last4=Tagami|first4=Takahiro|last5=Manetti|first5=Piero|date=2007-01-01|title=Geochemical and isotopic variability in lavas from the eastern Trans-Mexican Volcanic Belt: Slab detachment in a subduction zone with varying dip|url=http://www.sciencedirect.com/science/article/pii/S0024493706001769|journal=Lithos |volume=93|issue=1–2|page=156|doi=10.1016/j.lithos.2006.06.006}}
2. ^{{cite book|author=Paolo Papale|title=Volcanic Hazards, Risks and Disasters|url=https://books.google.com/books?id=02HFouVbMpYC&pg=PA315|date=29 October 2014|publisher=Academic Press|isbn=978-0-12-396476-2|page=328}}
[1][2]
}}

Sources

  • {{Cite journal|last=Rodríguez|first=S. R.|last2=Morales-Barrera|first2=W.|last3=Layer|first3=P.|last4=González-Mercado|first4=E.|date=2010-11-30|title=A quaternary monogenetic volcanic field in the Xalapa region, eastern Trans-Mexican volcanic belt: Geology, distribution and morphology of the volcanic vents|url=http://www.sciencedirect.com/science/article/pii/S0377027309003187|journal=Journal of Volcanology and Geothermal Research|series=Continental Margin Volcanism - A volume in memory of James F. Luhr|volume=197|issue=1–4|pages=149–166|doi=10.1016/j.jvolgeores.2009.08.003|ref=harv}}
  • {{Cite journal|last=Siebert|first=Lee|last2=Carrasco-Núñez|first2=Gerardo|date=2002-06-15|title=Late-Pleistocene to precolumbian behind-the-arc mafic volcanism in the eastern Mexican Volcanic Belt; implications for future hazards|url=http://www.sciencedirect.com/science/article/pii/S037702730100316X|journal=Journal of Volcanology and Geothermal Research|volume=115|issue=1–2|pages=179–205|doi=10.1016/S0377-0273(01)00316-X|ref=harv}}

4 : Volcanic fields|Holocene volcanism|Volcanoes of Mexico|Veracruz

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