Archaeocyaths from South America: review and a new record
In South America, autochthonous archaeocyathan faunas preserved in Early Cambrian limestones have not been found yet. Nevertheless, a few well‐documented occurrences of these fossils in clasts contained in coarse‐grained rocks of a wide age range have been discovered in recent years. Erratic limesto...
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crwiley:10.1002/gj.2415 2024-10-13T14:02:42+00:00 Archaeocyaths from South America: review and a new record González, P. D. Tortello, M. F. Damborenea, S. E. Naipauer, M. Sato, A. M. Varela, R. 2012 http://dx.doi.org/10.1002/gj.2415 https://api.wiley.com/onlinelibrary/tdm/v1/articles/10.1002%2Fgj.2415 https://onlinelibrary.wiley.com/doi/pdf/10.1002/gj.2415 en eng Wiley http://onlinelibrary.wiley.com/termsAndConditions#vor Geological Journal volume 48, issue 2-3, page 114-125 ISSN 0072-1050 1099-1034 journal-article 2012 crwiley https://doi.org/10.1002/gj.2415 2024-09-23T04:37:39Z In South America, autochthonous archaeocyathan faunas preserved in Early Cambrian limestones have not been found yet. Nevertheless, a few well‐documented occurrences of these fossils in clasts contained in coarse‐grained rocks of a wide age range have been discovered in recent years. Erratic limestone blocks from the Late Carboniferous–Early Permian Fitzroy Tillite Formation in the Falkland/Malvinas Islands yielded three archaeocyath taxa. Also, seven taxa were reported from archaeocyathan limestone clasts in a metaconglomerate of the Cambro‐Ordovician El Jagüelito Formation in northern Patagonia. In addition, a new record from the Late Carboniferous–Early Permian Sauce Grande Formation diamictites in Sierras Australes, Buenos Aires Province, Argentina, is presented herein. Preservation of this scarce new material is poor, but at least three different taxa can be distinguished. The most likely source of all archaeocyathan limestone clasts found in southern South America is the Shackleton Limestone from the Transantarctic Mountains in East Antarctica. The new record from the Sauce Grande Formation and the inferred clast provenance reinforce the correlation between this unit, the Dwyka Tillite (South Africa) and the Fitzroy Tillite Formation (Falklands/Malvinas), suggesting a very wide distribution of these Antarctic occurrences during the Late Carboniferous–Early Permian Gondwana glaciation (Episode III). Thus, even though being allochthonous, archaeocyaths are emerging as a new key biological feature for Gondwana palaeogeographic reconstructions. Copyright © 2012 John Wiley & Sons, Ltd. Article in Journal/Newspaper Antarc* Antarctic Antarctica East Antarctica Wiley Online Library Antarctic East Antarctica Patagonia Shackleton Transantarctic Mountains Argentina Fitzroy ENVELOPE(-66.964,-66.964,-68.189,-68.189) Geological Journal 48 2-3 114 125 |
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Open Polar |
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Wiley Online Library |
op_collection_id |
crwiley |
language |
English |
description |
In South America, autochthonous archaeocyathan faunas preserved in Early Cambrian limestones have not been found yet. Nevertheless, a few well‐documented occurrences of these fossils in clasts contained in coarse‐grained rocks of a wide age range have been discovered in recent years. Erratic limestone blocks from the Late Carboniferous–Early Permian Fitzroy Tillite Formation in the Falkland/Malvinas Islands yielded three archaeocyath taxa. Also, seven taxa were reported from archaeocyathan limestone clasts in a metaconglomerate of the Cambro‐Ordovician El Jagüelito Formation in northern Patagonia. In addition, a new record from the Late Carboniferous–Early Permian Sauce Grande Formation diamictites in Sierras Australes, Buenos Aires Province, Argentina, is presented herein. Preservation of this scarce new material is poor, but at least three different taxa can be distinguished. The most likely source of all archaeocyathan limestone clasts found in southern South America is the Shackleton Limestone from the Transantarctic Mountains in East Antarctica. The new record from the Sauce Grande Formation and the inferred clast provenance reinforce the correlation between this unit, the Dwyka Tillite (South Africa) and the Fitzroy Tillite Formation (Falklands/Malvinas), suggesting a very wide distribution of these Antarctic occurrences during the Late Carboniferous–Early Permian Gondwana glaciation (Episode III). Thus, even though being allochthonous, archaeocyaths are emerging as a new key biological feature for Gondwana palaeogeographic reconstructions. Copyright © 2012 John Wiley & Sons, Ltd. |
format |
Article in Journal/Newspaper |
author |
González, P. D. Tortello, M. F. Damborenea, S. E. Naipauer, M. Sato, A. M. Varela, R. |
spellingShingle |
González, P. D. Tortello, M. F. Damborenea, S. E. Naipauer, M. Sato, A. M. Varela, R. Archaeocyaths from South America: review and a new record |
author_facet |
González, P. D. Tortello, M. F. Damborenea, S. E. Naipauer, M. Sato, A. M. Varela, R. |
author_sort |
González, P. D. |
title |
Archaeocyaths from South America: review and a new record |
title_short |
Archaeocyaths from South America: review and a new record |
title_full |
Archaeocyaths from South America: review and a new record |
title_fullStr |
Archaeocyaths from South America: review and a new record |
title_full_unstemmed |
Archaeocyaths from South America: review and a new record |
title_sort |
archaeocyaths from south america: review and a new record |
publisher |
Wiley |
publishDate |
2012 |
url |
http://dx.doi.org/10.1002/gj.2415 https://api.wiley.com/onlinelibrary/tdm/v1/articles/10.1002%2Fgj.2415 https://onlinelibrary.wiley.com/doi/pdf/10.1002/gj.2415 |
long_lat |
ENVELOPE(-66.964,-66.964,-68.189,-68.189) |
geographic |
Antarctic East Antarctica Patagonia Shackleton Transantarctic Mountains Argentina Fitzroy |
geographic_facet |
Antarctic East Antarctica Patagonia Shackleton Transantarctic Mountains Argentina Fitzroy |
genre |
Antarc* Antarctic Antarctica East Antarctica |
genre_facet |
Antarc* Antarctic Antarctica East Antarctica |
op_source |
Geological Journal volume 48, issue 2-3, page 114-125 ISSN 0072-1050 1099-1034 |
op_rights |
http://onlinelibrary.wiley.com/termsAndConditions#vor |
op_doi |
https://doi.org/10.1002/gj.2415 |
container_title |
Geological Journal |
container_volume |
48 |
container_issue |
2-3 |
container_start_page |
114 |
op_container_end_page |
125 |
_version_ |
1812819173676417024 |