Early Cambrian archaeocyathan limestone blocks in low-grade meta-conglomerate from El Jagüelito Formation (Sierra Grande, RÃo 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, RÃo Negro, Argentina). This is the first documented reference of the pre...
Main Authors: | , , |
---|---|
Format: | Article in Journal/Newspaper |
Language: | English |
Published: |
2011
|
Subjects: | |
Online Access: | https://ddd.uab.cat/record/85130 |
id |
ftuabarcelonapb:oai:ddd.uab.cat:85130 |
---|---|
record_format |
openpolar |
spelling |
ftuabarcelonapb:oai:ddd.uab.cat:85130 2024-09-15T17:42:01+00:00 Early Cambrian archaeocyathan limestone blocks in low-grade meta-conglomerate from El Jagüelito Formation (Sierra Grande, RÃo Negro, Argentina González, P. D. Tortello, M. F. Damborenea, S. E. 2011 application/pdf https://ddd.uab.cat/record/85130 eng eng Geologica acta Vol. 9, Núm. 2 (Juny 2011), p. 159-173 https://ddd.uab.cat/record/85130 urn:10.1344/105.000001650 urn:oai:ddd.uab.cat:85130 urn:articleid:16965728v9n2p159 urn:oai:raco.cat:article/244266 urn:scopus_id:79960295094 urn:wos_id:000293099900003 urn:oai:revistes.ub.edu:article/2089 open access Aquest document està subjecte a una llicència d'ús Creative Commons. Es permet la reproducció total o parcial, la distribució, la comunicació pública de l'obra i la creació d'obres derivades, fins i tot amb finalitats comercials, sempre i quan aquestes es distribueixin sota la mateixa llicència que regula l'obra original i es reconegui l'autoria de l'obra original. https://creativecommons.org/licenses/by-sa/3.0/ Archaeocyatha Early Cambrian El Jagüelito Formation Low-grade metamorphism North Patagonian Massif Argentina Article 2011 ftuabarcelonapb 2024-08-06T14:30:46Z 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, RÃo 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 Universitat Autònoma de Barcelona: Dipòsit Digital de Documents de la UAB |
institution |
Open Polar |
collection |
Universitat Autònoma de Barcelona: Dipòsit Digital de Documents de la UAB |
op_collection_id |
ftuabarcelonapb |
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, RÃo 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, RÃo 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, RÃo Negro, Argentina |
title_short |
Early Cambrian archaeocyathan limestone blocks in low-grade meta-conglomerate from El Jagüelito Formation (Sierra Grande, RÃo Negro, Argentina |
title_full |
Early Cambrian archaeocyathan limestone blocks in low-grade meta-conglomerate from El Jagüelito Formation (Sierra Grande, RÃo Negro, Argentina |
title_fullStr |
Early Cambrian archaeocyathan limestone blocks in low-grade meta-conglomerate from El Jagüelito Formation (Sierra Grande, RÃo Negro, Argentina |
title_full_unstemmed |
Early Cambrian archaeocyathan limestone blocks in low-grade meta-conglomerate from El Jagüelito Formation (Sierra Grande, RÃo Negro, Argentina |
title_sort |
early cambrian archaeocyathan limestone blocks in low-grade meta-conglomerate from el jagã¼elito formation (sierra grande, rão negro, argentina |
publishDate |
2011 |
url |
https://ddd.uab.cat/record/85130 |
genre |
Antarc* Antarctica |
genre_facet |
Antarc* Antarctica |
op_relation |
Geologica acta Vol. 9, Núm. 2 (Juny 2011), p. 159-173 https://ddd.uab.cat/record/85130 urn:10.1344/105.000001650 urn:oai:ddd.uab.cat:85130 urn:articleid:16965728v9n2p159 urn:oai:raco.cat:article/244266 urn:scopus_id:79960295094 urn:wos_id:000293099900003 urn:oai:revistes.ub.edu:article/2089 |
op_rights |
open access Aquest document està subjecte a una llicència d'ús Creative Commons. Es permet la reproducció total o parcial, la distribució, la comunicació pública de l'obra i la creació d'obres derivades, fins i tot amb finalitats comercials, sempre i quan aquestes es distribueixin sota la mateixa llicència que regula l'obra original i es reconegui l'autoria de l'obra original. https://creativecommons.org/licenses/by-sa/3.0/ |
_version_ |
1810488344959778816 |