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...
Main Authors: | , , , , , |
---|---|
Format: | Article in Journal/Newspaper |
Language: | English |
Published: |
2013
|
Subjects: | |
Online Access: | http://sedici.unlp.edu.ar/handle/10915/101879 https://ri.conicet.gov.ar/11336/92584 |
id |
ftunivlaplata:oai:sedici.unlp.edu.ar:10915/101879 |
---|---|
record_format |
openpolar |
spelling |
ftunivlaplata:oai:sedici.unlp.edu.ar:10915/101879 2023-05-15T13:47:46+02:00 Archaeocyaths from South America: Review and a new record González, Pablo Diego Tortello, Marcelo Franco Damborenea, Susana Ester Naipauer, Maximiliano Sato, Ana María Varela, Ricardo 2013-03 application/pdf 114-125 http://sedici.unlp.edu.ar/handle/10915/101879 https://ri.conicet.gov.ar/11336/92584 en eng Geological Journal vol. 48, no. 2-3 http://sedici.unlp.edu.ar/handle/10915/101879 https://ri.conicet.gov.ar/11336/92584 issn:0072-1050 http://creativecommons.org/licenses/by-nc-sa/4.0/ Creative Commons Attribution-NonCommercial-ShareAlike 4.0 International (CC BY-NC-SA 4.0) CC-BY-NC-SA Ciencias Naturales Articulo 2013 ftunivlaplata 2020-08-23T00:01:17Z 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. Centro de Investigaciones Geológicas Facultad de Ciencias Naturales y Museo Article in Journal/Newspaper Antarc* Antarctic Antarctica East Antarctica Universidad Nacional de La Plata (UNLP): SeDiCI (Servicio de Difusión de la Creación Intelectual) Antarctic Argentina East Antarctica Fitzroy ENVELOPE(-66.964,-66.964,-68.189,-68.189) Patagonia Shackleton Transantarctic Mountains |
institution |
Open Polar |
collection |
Universidad Nacional de La Plata (UNLP): SeDiCI (Servicio de Difusión de la Creación Intelectual) |
op_collection_id |
ftunivlaplata |
language |
English |
topic |
Ciencias Naturales |
spellingShingle |
Ciencias Naturales González, Pablo Diego Tortello, Marcelo Franco Damborenea, Susana Ester Naipauer, Maximiliano Sato, Ana María Varela, Ricardo Archaeocyaths from South America: Review and a new record |
topic_facet |
Ciencias Naturales |
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. Centro de Investigaciones Geológicas Facultad de Ciencias Naturales y Museo |
format |
Article in Journal/Newspaper |
author |
González, Pablo Diego Tortello, Marcelo Franco Damborenea, Susana Ester Naipauer, Maximiliano Sato, Ana María Varela, Ricardo |
author_facet |
González, Pablo Diego Tortello, Marcelo Franco Damborenea, Susana Ester Naipauer, Maximiliano Sato, Ana María Varela, Ricardo |
author_sort |
González, Pablo Diego |
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 |
publishDate |
2013 |
url |
http://sedici.unlp.edu.ar/handle/10915/101879 https://ri.conicet.gov.ar/11336/92584 |
long_lat |
ENVELOPE(-66.964,-66.964,-68.189,-68.189) |
geographic |
Antarctic Argentina East Antarctica Fitzroy Patagonia Shackleton Transantarctic Mountains |
geographic_facet |
Antarctic Argentina East Antarctica Fitzroy Patagonia Shackleton Transantarctic Mountains |
genre |
Antarc* Antarctic Antarctica East Antarctica |
genre_facet |
Antarc* Antarctic Antarctica East Antarctica |
op_relation |
Geological Journal vol. 48, no. 2-3 http://sedici.unlp.edu.ar/handle/10915/101879 https://ri.conicet.gov.ar/11336/92584 issn:0072-1050 |
op_rights |
http://creativecommons.org/licenses/by-nc-sa/4.0/ Creative Commons Attribution-NonCommercial-ShareAlike 4.0 International (CC BY-NC-SA 4.0) |
op_rightsnorm |
CC-BY-NC-SA |
_version_ |
1766247818830282752 |