Sierra de Bequeville: Difference between revisions
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{{short description|Mountain range in Argentina}} |
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'''Sierra de Bequeville''' is a mountain range in [[Argentina]]. It is formed by two ridges, one mostly formed by [[Ordovician]] [[flysch]] and the other by rocks of uncertain age. The [[Eocene]] |
'''Sierra de Bequeville''' is a mountain range in [[Argentina]]. It is formed by two ridges, one mostly formed by [[Ordovician]] [[flysch]] and the other by rocks of uncertain age. The [[Eocene]] [[Geste Formation]], a {{convert|500|m}} thick welded [[tuff]] and correlative rocks dated to 16.7 ± 0.1 million years ago, and continental clast strata from 13.21 ± 0.6 million years ago form the rest of the range. |
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[[Cinder cone]]s along the Bequeville [[fault (geology)|fault]] which runs in the range have erupted [[lava flow]]s of [[basaltic andesite]] composition which are similar to other [[Altiplano|Puna]] volcanic rocks. This fault originally was probably a [[thrust fault]]; later [[strike-slip fault]]ing induced the onset of [[crustal extension]] which localizes the volcanic vents. |
[[Cinder cone]]s along the Bequeville [[fault (geology)|fault]] which runs in the range have erupted [[lava flow]]s of [[basaltic andesite]] composition which are similar to other [[Altiplano|Puna]] volcanic rocks. This fault originally was probably a [[thrust fault]]; later [[strike-slip fault]]ing induced the onset of [[crustal extension]] which localizes the volcanic vents. |
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== References == |
== References == |
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| ⚫ | * {{Cite journal|last=Marrett|first=R. A.|last2=Allmendinger|first2=R. W.|last3=Alonso|first3=R. N.|last4=Drake|first4=R. E.|date=1994-04-01|title=Late Cenozoic tectonic evolution of the Puna Plateau and adjacent foreland, northwestern Argentine Andes|journal=Journal of South American Earth Sciences|volume=7|issue=2|pages=179–207|doi=10.1016/0895-9811(94)90007-8|doi-access=free}} |
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{{coord missing|Argentina}} |
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| ⚫ | * {{Cite journal|last=Marrett|first=R. A.|last2=Allmendinger|first2=R. W.|last3=Alonso|first3=R. N.|last4=Drake|first4=R. E.|date=1994-04-01|title=Late Cenozoic tectonic evolution of the Puna Plateau and adjacent foreland, northwestern Argentine Andes |
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[[Category:Mountains of Argentina]] |
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{{Salta-geo-stub}} |
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[[Category:Articles created via the Article Wizard]] |
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{{SouthAm-mountain-stub}} |
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Latest revision as of 11:06, 24 January 2024
Sierra de Bequeville is a mountain range in Argentina. It is formed by two ridges, one mostly formed by Ordovician flysch and the other by rocks of uncertain age. The Eocene Geste Formation, a 500 metres (1,600 ft) thick welded tuff and correlative rocks dated to 16.7 ± 0.1 million years ago, and continental clast strata from 13.21 ± 0.6 million years ago form the rest of the range.
Cinder cones along the Bequeville fault which runs in the range have erupted lava flows of basaltic andesite composition which are similar to other Puna volcanic rocks. This fault originally was probably a thrust fault; later strike-slip faulting induced the onset of crustal extension which localizes the volcanic vents.
References
[edit]- Marrett, R. A.; Allmendinger, R. W.; Alonso, R. N.; Drake, R. E. (1994-04-01). "Late Cenozoic tectonic evolution of the Puna Plateau and adjacent foreland, northwestern Argentine Andes". Journal of South American Earth Sciences. 7 (2): 179–207. doi:10.1016/0895-9811(94)90007-8.
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