Early Cambrian archaeocyathan limestone blocks in low-grade meta-conglomerate from El Jagüelito Formation (Sierra Grande, Río Negro, Argentina)
Massive grey limestone blocks containing a fairly diverse but poorly preserved archaeocyath fauna were recovered from a meta-conglomerate bed in the El Jagüelito Formation (Sierra Grande area, Eastern North Patagonian Massif, Río Negro, Argentina). This is the first documented reference of the prese...
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ftubarceojs:oai:revistes.ub.edu:article/2089 2023-05-15T13:32:26+02:00 Early Cambrian archaeocyathan limestone blocks in low-grade meta-conglomerate from El Jagüelito Formation (Sierra Grande, Río Negro, Argentina) GONZÁLEZ, P.D. TORTELLO, M.F. DAMBORENEA, S.E. 2011-07-14 application/pdf http://revistes.ub.edu/index.php/GEOACTA/article/view/105.000001650 eng eng Universitat de Barcelona http://revistes.ub.edu/index.php/GEOACTA/article/view/105.000001650/4347 http://revistes.ub.edu/index.php/GEOACTA/article/view/105.000001650 Geologica Acta; Vol. 9 No 2 (2011); 159-173 Geologica Acta; Vol. 9 No. 2 (2011); 159-173 Geologica Acta; Vol. 9 Núm. 2 (2011); 159-173 1696-5728 1695-6133 Archaeocyatha Early Cambrian El Jagüelito Formation Low-grade metamorphism North Patagonian Massif Argentina info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion 2011 ftubarceojs 2022-12-26T13:37:05Z Massive grey limestone blocks containing a fairly diverse but poorly preserved archaeocyath fauna were recovered from a meta-conglomerate bed in the El Jagüelito Formation (Sierra Grande area, Eastern North Patagonian Massif, Río Negro, Argentina). This is the first documented reference of the presence of archaeocyaths in continental Argentina. Seven different taxa were identified, preliminary described and figured. Recrystallization of the skeletons due to regional low-grade metamorphism and deformation of the unit does not allow observation of key detailed features and prevents identification to genera and species. Nevertheless, the specimens studied show general affinities with archaeocyathan assemblages from the Australia-Antarctica palaeobiogeographic province and indicate a middle Early Cambrian (Atdabanian-Botomian) maximum age for the deposition of the El Jagüelito Formation protoliths. The similarities between the North Patagonian Early Paleozoic El Jagüelito Formation and those rocks from Antarctica suggest a geologic and biologic common history of these regions on the same southwest margin of Gondwana during that time. Article in Journal/Newspaper Antarc* Antarctica Revistes Científiques de la Universitat de Barcelona Argentina |
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Open Polar |
collection |
Revistes Científiques de la Universitat de Barcelona |
op_collection_id |
ftubarceojs |
language |
English |
topic |
Archaeocyatha Early Cambrian El Jagüelito Formation Low-grade metamorphism North Patagonian Massif Argentina |
spellingShingle |
Archaeocyatha Early Cambrian El Jagüelito Formation Low-grade metamorphism North Patagonian Massif Argentina GONZÁLEZ, P.D. TORTELLO, M.F. DAMBORENEA, S.E. Early Cambrian archaeocyathan limestone blocks in low-grade meta-conglomerate from El Jagüelito Formation (Sierra Grande, Río Negro, Argentina) |
topic_facet |
Archaeocyatha Early Cambrian El Jagüelito Formation Low-grade metamorphism North Patagonian Massif Argentina |
description |
Massive grey limestone blocks containing a fairly diverse but poorly preserved archaeocyath fauna were recovered from a meta-conglomerate bed in the El Jagüelito Formation (Sierra Grande area, Eastern North Patagonian Massif, Río Negro, Argentina). This is the first documented reference of the presence of archaeocyaths in continental Argentina. Seven different taxa were identified, preliminary described and figured. Recrystallization of the skeletons due to regional low-grade metamorphism and deformation of the unit does not allow observation of key detailed features and prevents identification to genera and species. Nevertheless, the specimens studied show general affinities with archaeocyathan assemblages from the Australia-Antarctica palaeobiogeographic province and indicate a middle Early Cambrian (Atdabanian-Botomian) maximum age for the deposition of the El Jagüelito Formation protoliths. The similarities between the North Patagonian Early Paleozoic El Jagüelito Formation and those rocks from Antarctica suggest a geologic and biologic common history of these regions on the same southwest margin of Gondwana during that time. |
format |
Article in Journal/Newspaper |
author |
GONZÁLEZ, P.D. TORTELLO, M.F. DAMBORENEA, S.E. |
author_facet |
GONZÁLEZ, P.D. TORTELLO, M.F. DAMBORENEA, S.E. |
author_sort |
GONZÁLEZ, P.D. |
title |
Early Cambrian archaeocyathan limestone blocks in low-grade meta-conglomerate from El Jagüelito Formation (Sierra Grande, Río Negro, Argentina) |
title_short |
Early Cambrian archaeocyathan limestone blocks in low-grade meta-conglomerate from El Jagüelito Formation (Sierra Grande, Río Negro, Argentina) |
title_full |
Early Cambrian archaeocyathan limestone blocks in low-grade meta-conglomerate from El Jagüelito Formation (Sierra Grande, Río Negro, Argentina) |
title_fullStr |
Early Cambrian archaeocyathan limestone blocks in low-grade meta-conglomerate from El Jagüelito Formation (Sierra Grande, Río Negro, Argentina) |
title_full_unstemmed |
Early Cambrian archaeocyathan limestone blocks in low-grade meta-conglomerate from El Jagüelito Formation (Sierra Grande, Río Negro, Argentina) |
title_sort |
early cambrian archaeocyathan limestone blocks in low-grade meta-conglomerate from el jagüelito formation (sierra grande, río negro, argentina) |
publisher |
Universitat de Barcelona |
publishDate |
2011 |
url |
http://revistes.ub.edu/index.php/GEOACTA/article/view/105.000001650 |
geographic |
Argentina |
geographic_facet |
Argentina |
genre |
Antarc* Antarctica |
genre_facet |
Antarc* Antarctica |
op_source |
Geologica Acta; Vol. 9 No 2 (2011); 159-173 Geologica Acta; Vol. 9 No. 2 (2011); 159-173 Geologica Acta; Vol. 9 Núm. 2 (2011); 159-173 1696-5728 1695-6133 |
op_relation |
http://revistes.ub.edu/index.php/GEOACTA/article/view/105.000001650/4347 http://revistes.ub.edu/index.php/GEOACTA/article/view/105.000001650 |
_version_ |
1766026976376651776 |