Palynology of the Iscayachi Formation (Cambro-Ordovician) from the Cordillera Oriental of Southern Bolivia: New data from the western margin of Gondwana
The first late-Cambrian aged palynomorph assemblage of Bolivia is presented. The sampled material comes from the Cambro-Ordovician Iscayachi Formation cropping out in the Antenna of the Sierra de Sama, Tarija department, southern Bolivia. The palynomorph assemblage occurs in levels correlated to the...
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ftubarceojs:oai:revistes.ub.edu:article/7943 2023-05-15T15:05:00+02:00 Palynology of the Iscayachi Formation (Cambro-Ordovician) from the Cordillera Oriental of Southern Bolivia: New data from the western margin of Gondwana VERGEL, M.M. Aceñolaza, Guillermo F. ARÁOZ, L. 2022-03-15 application/pdf http://revistes.ub.edu/index.php/GEOACTA/article/view/105.000001707 eng eng Universitat de Barcelona http://revistes.ub.edu/index.php/GEOACTA/article/view/105.000001707/9845 http://revistes.ub.edu/index.php/GEOACTA/article/view/105.000001707 https://creativecommons.org/licenses/by-sa/4.0 CC-BY-SA Geologica Acta; Vol. 11 No 2 (2013); 167-176 Geologica Acta; Vol. 11 No. 2 (2013); 167-176 Geologica Acta; Vol. 11 Núm. 2 (2013); 167-176 1696-5728 1695-6133 Manganese Oxidation Trace elements Weathering info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion 2022 ftubarceojs 2022-12-26T13:37:19Z The first late-Cambrian aged palynomorph assemblage of Bolivia is presented. The sampled material comes from the Cambro-Ordovician Iscayachi Formation cropping out in the Antenna of the Sierra de Sama, Tarija department, southern Bolivia. The palynomorph assemblage occurs in levels correlated to the Parabolina (Neoparabolina) frequens argentina trilobite biozone. It is comprised of Acanthodiacrodium spp., Cristallinium cambriense, Cymatiogalea cf. C. aspergillum, C. velifera, C. virgulta, Dasydiacrodium spp., Eliasum llaniscum, Impluviculus multiangularis, Ladogella rommelaerei, Ladogella sp., Leiofusa sp., Leiosphaeridia sp., Lophosphaeridium sp., Lusatia? sp., Micrhystridium sp., Poikilofusa squama, Poikilofusa sp., Polygonium dentatum, Retisphaeridium brayense, Saharidia fragilis, Solisphaeridium akrochordum, S. lucidum, Timofeevia phosphoritica, Timofeevia microretis, Vulcanisphaera africana and V. turbata. The assemblage provides elements of comparison with previously reported palynofloras in northern Argentina, eastern Newfoundland, southwestern Sardinia, Algeria, northern Spain, Baltica and Avalonia (Arctic Russia, East-European Platform). All microphytoplancton are indicative of cold water affinities as expected from the western margin of Gondwana, showing some Baltic affinities as well. Article in Journal/Newspaper Arctic Newfoundland Revistes Científiques de la Universitat de Barcelona Arctic Argentina |
institution |
Open Polar |
collection |
Revistes Científiques de la Universitat de Barcelona |
op_collection_id |
ftubarceojs |
language |
English |
topic |
Manganese Oxidation Trace elements Weathering |
spellingShingle |
Manganese Oxidation Trace elements Weathering VERGEL, M.M. Aceñolaza, Guillermo F. ARÁOZ, L. Palynology of the Iscayachi Formation (Cambro-Ordovician) from the Cordillera Oriental of Southern Bolivia: New data from the western margin of Gondwana |
topic_facet |
Manganese Oxidation Trace elements Weathering |
description |
The first late-Cambrian aged palynomorph assemblage of Bolivia is presented. The sampled material comes from the Cambro-Ordovician Iscayachi Formation cropping out in the Antenna of the Sierra de Sama, Tarija department, southern Bolivia. The palynomorph assemblage occurs in levels correlated to the Parabolina (Neoparabolina) frequens argentina trilobite biozone. It is comprised of Acanthodiacrodium spp., Cristallinium cambriense, Cymatiogalea cf. C. aspergillum, C. velifera, C. virgulta, Dasydiacrodium spp., Eliasum llaniscum, Impluviculus multiangularis, Ladogella rommelaerei, Ladogella sp., Leiofusa sp., Leiosphaeridia sp., Lophosphaeridium sp., Lusatia? sp., Micrhystridium sp., Poikilofusa squama, Poikilofusa sp., Polygonium dentatum, Retisphaeridium brayense, Saharidia fragilis, Solisphaeridium akrochordum, S. lucidum, Timofeevia phosphoritica, Timofeevia microretis, Vulcanisphaera africana and V. turbata. The assemblage provides elements of comparison with previously reported palynofloras in northern Argentina, eastern Newfoundland, southwestern Sardinia, Algeria, northern Spain, Baltica and Avalonia (Arctic Russia, East-European Platform). All microphytoplancton are indicative of cold water affinities as expected from the western margin of Gondwana, showing some Baltic affinities as well. |
format |
Article in Journal/Newspaper |
author |
VERGEL, M.M. Aceñolaza, Guillermo F. ARÁOZ, L. |
author_facet |
VERGEL, M.M. Aceñolaza, Guillermo F. ARÁOZ, L. |
author_sort |
VERGEL, M.M. |
title |
Palynology of the Iscayachi Formation (Cambro-Ordovician) from the Cordillera Oriental of Southern Bolivia: New data from the western margin of Gondwana |
title_short |
Palynology of the Iscayachi Formation (Cambro-Ordovician) from the Cordillera Oriental of Southern Bolivia: New data from the western margin of Gondwana |
title_full |
Palynology of the Iscayachi Formation (Cambro-Ordovician) from the Cordillera Oriental of Southern Bolivia: New data from the western margin of Gondwana |
title_fullStr |
Palynology of the Iscayachi Formation (Cambro-Ordovician) from the Cordillera Oriental of Southern Bolivia: New data from the western margin of Gondwana |
title_full_unstemmed |
Palynology of the Iscayachi Formation (Cambro-Ordovician) from the Cordillera Oriental of Southern Bolivia: New data from the western margin of Gondwana |
title_sort |
palynology of the iscayachi formation (cambro-ordovician) from the cordillera oriental of southern bolivia: new data from the western margin of gondwana |
publisher |
Universitat de Barcelona |
publishDate |
2022 |
url |
http://revistes.ub.edu/index.php/GEOACTA/article/view/105.000001707 |
geographic |
Arctic Argentina |
geographic_facet |
Arctic Argentina |
genre |
Arctic Newfoundland |
genre_facet |
Arctic Newfoundland |
op_source |
Geologica Acta; Vol. 11 No 2 (2013); 167-176 Geologica Acta; Vol. 11 No. 2 (2013); 167-176 Geologica Acta; Vol. 11 Núm. 2 (2013); 167-176 1696-5728 1695-6133 |
op_relation |
http://revistes.ub.edu/index.php/GEOACTA/article/view/105.000001707/9845 http://revistes.ub.edu/index.php/GEOACTA/article/view/105.000001707 |
op_rights |
https://creativecommons.org/licenses/by-sa/4.0 |
op_rightsnorm |
CC-BY-SA |
_version_ |
1766336773785387008 |