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ID:1576187
User:189.172.81.164
Article:Tres Virgenes
Diff:
m (Reverted edits by 189.138.130.159 identified as vandalism (WP:HG))
(Eruption history)
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==Eruption history==
 
==Eruption history==
 
The last eruption of the volcanoes in the complex was of El Virgen, but the date is disputed. A map drawn by the [[Croats|Croatian]] Jesuit missionary [[Ferdinand Konščak]] contains a reference to an eruption in 1746.<ref name="Ives">Ives, Ronald, ''Dating of the 1746 Eruption of Tres Virgenes Volcano, Baja California Del Sur, Mexico,'' Geological Society of America Bulletin, v. 73, pp. 647-648, May 1962.</ref> Radiometric datings, however, do not agree with this. A charcoal fragment found in a volcanic deposit was dated at approximately 6515&nbsp;years before present.<ref name="Capra">Capra et al., ''Holocene plinian eruption of La Virgen Volcano, Baja California, Mexico,'' Journal of Volcanology and Geothermal Research, Issue 80 pp. 239–266, 1998.</ref> A basaltic lava flow, which must be younger than the actual eruption, was dated at approximately 24 thousand years B.P.<ref name="Hausback">Hausback and Abrams, ''Plinian eruption of La Virgen Tephra, Volcán Las Tres Virgenes, Baja California Sur, Mexico'', American Geophysical Union, Issue 77, pp. 813–814, 1996.</ref> which agrees with a dating of [[tephra]] fragments from El Virgen that yielded an age of approximately 36 thousand years B.P. for the eruption.<ref name="Schmitt">Schmitt et al., ''Eruption and magma crystallization ages of Las Tres Vírgenes (Baja California) constrained by combined 230Th/238U and (U–Th)/He dating of zircon,'' Journal of Volcanology and Geothermal Research, Issue 158, pp. 281–295, 2006.</ref>
 
The last eruption of the volcanoes in the complex was of El Virgen, but the date is disputed. A map drawn by the [[Croats|Croatian]] Jesuit missionary [[Ferdinand Konščak]] contains a reference to an eruption in 1746.<ref name="Ives">Ives, Ronald, ''Dating of the 1746 Eruption of Tres Virgenes Volcano, Baja California Del Sur, Mexico,'' Geological Society of America Bulletin, v. 73, pp. 647-648, May 1962.</ref> Radiometric datings, however, do not agree with this. A charcoal fragment found in a volcanic deposit was dated at approximately 6515&nbsp;years before present.<ref name="Capra">Capra et al., ''Holocene plinian eruption of La Virgen Volcano, Baja California, Mexico,'' Journal of Volcanology and Geothermal Research, Issue 80 pp. 239–266, 1998.</ref> A basaltic lava flow, which must be younger than the actual eruption, was dated at approximately 24 thousand years B.P.<ref name="Hausback">Hausback and Abrams, ''Plinian eruption of La Virgen Tephra, Volcán Las Tres Virgenes, Baja California Sur, Mexico'', American Geophysical Union, Issue 77, pp. 813–814, 1996.</ref> which agrees with a dating of [[tephra]] fragments from El Virgen that yielded an age of approximately 36 thousand years B.P. for the eruption.<ref name="Schmitt">Schmitt et al., ''Eruption and magma crystallization ages of Las Tres Vírgenes (Baja California) constrained by combined 230Th/238U and (U–Th)/He dating of zircon,'' Journal of Volcanology and Geothermal Research, Issue 158, pp. 281–295, 2006.</ref>
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Fito mato a pepito el tonto lollolololol trooooool
   
 
==See also==
 
==See also==
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