Please use this identifier to cite or link to this item: http://repositorio.ingemmet.gob.pe/handle/ingemmet/1505
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Kaneoka, Ichiro
Guevara Rosillo, Carlos
Andes
Arequipa
Puno
Perú
Cuaternario
2018-06-22T21:26:53Z
2018-06-22T21:26:53Z
1984
Kaneoka, I. & Guevara, C. (1984) - K-Ar age determinations of the late Tertiary and Quaternary Andean volcanic rocks, southern Peru. Geochemical Journal, 18(5): 233–239. Doi: 10.2343/geochemj.18.233
1880-5973
http://repositorio.ingemmet.gob.pe/handle/ingemmet/1505
K-Ar ages were determined on 30 Andean volcanic rocks from southern Peru, most of which were considered to belong to the Barroso Group of Quaternary in age. The results have revealed, however, that their ages range from late Miocene to recent (7.2 to less than 0.03 Ma). This indicates that the Barroso Group samples might include much wider age ranges than had been assigned. Relatively young volcanic activity of late Quaternary is apparently restricted in the northwestern part including the vicinity of Arequipa in the investigated area. The main volcanic activity in the southwestern part seem to have almost ended by early Pleistocene. The shoshonitic rocks which are located around the Puno area probably extruded about 6Ma ago in a relatively short period of less than a few hundred thousand years.
application/pdf
eng
The Geochemical Society of Japan
Geochemical Journal, 18(5): 233–239, 1984
info:eu-repo/semantics/openAccess
https://creativecommons.org/licenses/by-sa/4.0/
Repositorio Institucional INGEMMET
Instituto Geológico, Minero y Metalúrgico – INGEMMET
Datación K-Ar
Geocronología
Rocas volcánicas
Grupo Sencca
Grupo Tacaza
K-Ar age determinations of the late Tertiary and Quaternary Andean volcanic rocks, southern Peru
info:eu-repo/semantics/article
Geología
Japón
10.2343/geochemj.18.233
Geochemical Journal
https://doi.org/10.2343/geochemj.18.233
Peer reviewed

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