Translator Disclaimer
1 December 2012 The Palynology of the Lower Permian (Asselian-?Artinskian) Copacabana Formationof Apillapampa, Cochabamba, Bolivia
Author Affiliations +
Abstract

The palynostratigraphy of the lower and Coal members of the Copacabana Formation from Apillapampa, central Bolivia was investigated. Twelve samples yielded abundant and diverse, moderately well-preserved pollen and spores. One new spore species, Dictyotriletes cousmineri, is described and 52 species are recorded for the first time in Bolivia. Two species each of acritarchs and scolecodonts are also present. The lowermost assemblage yielded Vittatina and taxa such as Pakhapites ovatus and Marsupipollenites striatus, which are characteristic of the Asselian—Early Artinskian Vittatina costabilis Zone of the Paraná Basin, Brazil. The uppermost assemblage is defined by the appearance of several species of Lueckisporites, together with species of Vittatina, Lunatisporites, Pakhapites, Hamiapollenites, Corisaccites, Mabuitasaccites, Striomonosaccites, Striatoabieites, Striatopodocarpites and Weylandites. Abundant monolete and trilete spores with subordinate pollen grains are present in the Coal Member. Those species suggest correlation to the Middle Artinskian—Wuachiapingian Lueckisporites virkkiae Zone of the Paraná Basin. Highly variable associations of gymnosperms occur in the lower member whereas pteridophytes, sphenophylls and lycopods are dominant in the overlying Coal Member. These groups of plants characterised terrestrial landscapes along marine margins during the Early Cisuralian, and confirm the widespread distribution of the Glossopteris flora during the Permian in Gondwanaland. Preliminary radiometric data from interbedded tuffs suggest an Asselian—Sakmarian age for the marine Copacabana Formation and a Sakmarian—?Artinskian age for the overlying Coal Member. These new data are highly significant in terms of Permian correlations in central South America.

© 2012 CONICET
Mercedes M. di Pasquo and George W. Grader "The Palynology of the Lower Permian (Asselian-?Artinskian) Copacabana Formationof Apillapampa, Cochabamba, Bolivia," Palynology 36(2), 264-276, (1 December 2012). https://doi.org/10.1080/01916122.2012.677644
Published: 1 December 2012
JOURNAL ARTICLE
13 PAGES

This article is only available to subscribers.
It is not available for individual sale.
+ SAVE TO MY LIBRARY

SHARE
ARTICLE IMPACT
RIGHTS & PERMISSIONS
Get copyright permission
Back to Top