Marine Cretaceous organic-walled dinoflagellate cysts from the Austral-Magallanes Basin.
Cretaceous marine sedimentary rocks from the Austral-Magallanes Basin have provided a valuable organic-walled dinoflagellate cyst record as a useful tool for biostratigraphical interpretations and paleo-oceanographical reconstructions. This paper contains a revision of the main dinoflagellate cyst i...
Main Authors: | , , |
---|---|
Format: | Article in Journal/Newspaper |
Language: | English Spanish Portuguese |
Published: |
Asociación Argentina de Sedimentología
2021
|
Subjects: | |
Online Access: | https://doaj.org/article/35ceac444d1f4e8ba722004cfecb2bcd |
id |
ftdoajarticles:oai:doaj.org/article:35ceac444d1f4e8ba722004cfecb2bcd |
---|---|
record_format |
openpolar |
spelling |
ftdoajarticles:oai:doaj.org/article:35ceac444d1f4e8ba722004cfecb2bcd 2024-01-21T10:01:43+01:00 Marine Cretaceous organic-walled dinoflagellate cysts from the Austral-Magallanes Basin. María Sol González Estebenet Melisa Andrea Paolillo María Verónica Guler 2021-03-01T00:00:00Z https://doaj.org/article/35ceac444d1f4e8ba722004cfecb2bcd EN ES PT eng spa por Asociación Argentina de Sedimentología https://www.lajsba.sedimentologia.org.ar/index.php/lajsba/article/view/53 https://doaj.org/toc/1669-7316 https://doaj.org/toc/1851-4979 1669-7316 1851-4979 https://doaj.org/article/35ceac444d1f4e8ba722004cfecb2bcd Latin American Journal of Sedimentology and Basin Analysis, Vol 26, Iss 2 (2021) Dinoflagellate cysts Cretaceous Biostratigraphy Paleobiogeography Patagonia Geology QE1-996.5 Geophysics. Cosmic physics QC801-809 article 2021 ftdoajarticles 2023-12-24T01:42:39Z Cretaceous marine sedimentary rocks from the Austral-Magallanes Basin have provided a valuable organic-walled dinoflagellate cyst record as a useful tool for biostratigraphical interpretations and paleo-oceanographical reconstructions. This paper contains a revision of the main dinoflagellate cyst information previously published in southwest Patagonia and the Continental Platform, encompassing two time intervals, the Late Hauterivian to Early Cenomanian and the Campanian to Maastrichtian. We present for the first time a sequence of Cretaceous diagnostic dinoflagellate cyst events identified at surface and subsurface sections throughout the Austral-Magallanes Basin. In ascending order, nineteen primary bioevents of first occurrence (FO), last occurrence (LO) and acme were recognized. Eleven biovents were identified in the Early Cretaceous: LO of Senoniasphaera tabulata, LO of Kleithriaphaeridium fasciatum, FO of Prolixosphaeridium parvispinum, LO of Phoberocysta neocomica, FO of Herendeenia postprojecta, FO of Odontochitina operculata, LO of Cassiculosphaeridia magna and the LO of Kaiwaradinium scrutillinum, Ovoidinium sp. Acme, LO of Dingodinium cerviculum and LO of Muderongia tetracantha. Nine bioevents were identified in the Late Cretaceous: FO of Odontochitina porifera, FO of Palaeohystrichophora infusorioides, FO of Nelsoniella aceras, FO of Nelsoniella tuberculata, FO of Xenikoon australis, LO Nelsoniella aceras, LO of Odontochitina spinosa, FO of Manumiella druggii and FO of Eisenackia circumtabulata. In general, the Austral-Magallanes Basin assemblages compare well with those coeval from the middle to high Southern Hemisphere latitudes sites, suggesting paleo-oceanographical connections between the southernmost tip of South America, Antarctica, New Zealand and Australia during the Cretaceous. Article in Journal/Newspaper Antarc* Antarctica Antarctica New Zealand Directory of Open Access Journals: DOAJ Articles Austral Magallanes ENVELOPE(-62.933,-62.933,-64.883,-64.883) New Zealand Patagonia |
institution |
Open Polar |
collection |
Directory of Open Access Journals: DOAJ Articles |
op_collection_id |
ftdoajarticles |
language |
English Spanish Portuguese |
topic |
Dinoflagellate cysts Cretaceous Biostratigraphy Paleobiogeography Patagonia Geology QE1-996.5 Geophysics. Cosmic physics QC801-809 |
spellingShingle |
Dinoflagellate cysts Cretaceous Biostratigraphy Paleobiogeography Patagonia Geology QE1-996.5 Geophysics. Cosmic physics QC801-809 María Sol González Estebenet Melisa Andrea Paolillo María Verónica Guler Marine Cretaceous organic-walled dinoflagellate cysts from the Austral-Magallanes Basin. |
topic_facet |
Dinoflagellate cysts Cretaceous Biostratigraphy Paleobiogeography Patagonia Geology QE1-996.5 Geophysics. Cosmic physics QC801-809 |
description |
Cretaceous marine sedimentary rocks from the Austral-Magallanes Basin have provided a valuable organic-walled dinoflagellate cyst record as a useful tool for biostratigraphical interpretations and paleo-oceanographical reconstructions. This paper contains a revision of the main dinoflagellate cyst information previously published in southwest Patagonia and the Continental Platform, encompassing two time intervals, the Late Hauterivian to Early Cenomanian and the Campanian to Maastrichtian. We present for the first time a sequence of Cretaceous diagnostic dinoflagellate cyst events identified at surface and subsurface sections throughout the Austral-Magallanes Basin. In ascending order, nineteen primary bioevents of first occurrence (FO), last occurrence (LO) and acme were recognized. Eleven biovents were identified in the Early Cretaceous: LO of Senoniasphaera tabulata, LO of Kleithriaphaeridium fasciatum, FO of Prolixosphaeridium parvispinum, LO of Phoberocysta neocomica, FO of Herendeenia postprojecta, FO of Odontochitina operculata, LO of Cassiculosphaeridia magna and the LO of Kaiwaradinium scrutillinum, Ovoidinium sp. Acme, LO of Dingodinium cerviculum and LO of Muderongia tetracantha. Nine bioevents were identified in the Late Cretaceous: FO of Odontochitina porifera, FO of Palaeohystrichophora infusorioides, FO of Nelsoniella aceras, FO of Nelsoniella tuberculata, FO of Xenikoon australis, LO Nelsoniella aceras, LO of Odontochitina spinosa, FO of Manumiella druggii and FO of Eisenackia circumtabulata. In general, the Austral-Magallanes Basin assemblages compare well with those coeval from the middle to high Southern Hemisphere latitudes sites, suggesting paleo-oceanographical connections between the southernmost tip of South America, Antarctica, New Zealand and Australia during the Cretaceous. |
format |
Article in Journal/Newspaper |
author |
María Sol González Estebenet Melisa Andrea Paolillo María Verónica Guler |
author_facet |
María Sol González Estebenet Melisa Andrea Paolillo María Verónica Guler |
author_sort |
María Sol González Estebenet |
title |
Marine Cretaceous organic-walled dinoflagellate cysts from the Austral-Magallanes Basin. |
title_short |
Marine Cretaceous organic-walled dinoflagellate cysts from the Austral-Magallanes Basin. |
title_full |
Marine Cretaceous organic-walled dinoflagellate cysts from the Austral-Magallanes Basin. |
title_fullStr |
Marine Cretaceous organic-walled dinoflagellate cysts from the Austral-Magallanes Basin. |
title_full_unstemmed |
Marine Cretaceous organic-walled dinoflagellate cysts from the Austral-Magallanes Basin. |
title_sort |
marine cretaceous organic-walled dinoflagellate cysts from the austral-magallanes basin. |
publisher |
Asociación Argentina de Sedimentología |
publishDate |
2021 |
url |
https://doaj.org/article/35ceac444d1f4e8ba722004cfecb2bcd |
long_lat |
ENVELOPE(-62.933,-62.933,-64.883,-64.883) |
geographic |
Austral Magallanes New Zealand Patagonia |
geographic_facet |
Austral Magallanes New Zealand Patagonia |
genre |
Antarc* Antarctica Antarctica New Zealand |
genre_facet |
Antarc* Antarctica Antarctica New Zealand |
op_source |
Latin American Journal of Sedimentology and Basin Analysis, Vol 26, Iss 2 (2021) |
op_relation |
https://www.lajsba.sedimentologia.org.ar/index.php/lajsba/article/view/53 https://doaj.org/toc/1669-7316 https://doaj.org/toc/1851-4979 1669-7316 1851-4979 https://doaj.org/article/35ceac444d1f4e8ba722004cfecb2bcd |
_version_ |
1788691776007045120 |