Please use this identifier to cite or link to this item: https://hdl.handle.net/20.500.12544/706
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Fernández López, Sixto Rafael
Carlotto Caillaux, Víctor Santiago
Giraldo Saldívar, Edwin Wilfredo
Chacaltana Budiel, César Augusto
Ayacucho
Perú
Jurásico medio
2017-11-03T22:11:10Z
2017-11-03T22:11:10Z
2014-01
Fernández, S.; Carlotto, V.; Giraldo, E. & Chacaltana, C. (2014) - Bajocian ammonoids from Pumani River area (Ayacucho, Peru): Palaeobiogeographical and palaeoenvironmental implications for the Arequipa Basin. Journal of South American Earth Sciences, 49: 51–62. Doi: 10.1016/j.jsames.2013.11.003
0895-9811
https://hdl.handle.net/20.500.12544/706
Se publica preprint del artículo.
Deposits of the Socosani Formation in the Pucayacu and Pumani sections (Ayacucho Department, Peru), along several kilometres, have yielded Upper Bajocian ammonoid fossil-assemblages characterized by the occurrence of juvenile individuals belonging to endemic or pandemic genera, such as Megasphaeroceras and Spiroceras respectively. In addition, certain Bajocian genera relatively common in the Mediterranean-Caucasian Subrealm, but very scarce in the Eastern Pacific Subrealm, such as the strigoceratid Cadomoceras and the phylloceratid Adabofoloceras, occur in this area. According to the taphonomic, palaeoecological and palaeobiogeographical evidence from the Pumani River area, the maximum deepening, relative sea-level rise and oceanic accessibility of a Bajocian–Bathonian, second-order, transgressive/regressive facies cycle in the marine Arequipa Basin were reached during the Late Bajocian Niortense Biochron. However, synsedimentary regional tectonics in the Pumani River area disturbed this general deepening/shallowing cycle of the Arequipa Basin, particularly during the Late Bajocian post-Niortense time-interval of the Garantiana and Parkinsoni biochrons.
application/pdf
eng
Elsevier
Journal of South American Earth Sciences, v. 49, 2014, pp.51–62
info:eu-repo/semantics/openAccess
https://creativecommons.org/licenses/by-nc-sa/4.0/
Repositorio Institucional INGEMMET
Instituto Geológico, Minero y Metalúrgico – INGEMMET
Ammonites
Ammonoidea
Estratigrafía secuencial
Paleobiogeografía
Tafonomía
Río Pumani
Cuenca Arequipa
Formación Socosani
Bajocian ammonoids from Pumani River area (Ayacucho, Peru): Palaeobiogeographical and palaeoenvironmental implications for the Arequipa Basin
info:eu-repo/semantics/article
Geología
Países Bajos
10.1016/j.jsames.2013.11.003
Journal of South American Earth Sciences
http://dx.doi.org/10.1016/j.jsames.2013.11.003
Peer reviewed

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