Dinoflagellate cysts from the Upper Triassic (Norian) of northeastern Iran
Upper Triassic (Norian) strata of the Miankuhi Formation in northeastern Iran have been studied palynologically, revealing a diverse but poorly preserved association of dinoflagellate cysts. Based on representatives of the genera Hebecysta, Heibergella, Rhaetogonyaulax and Sverdrupiella, the strata...
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ftcopernicus:oai:publications.copernicus.org:jm65585 2023-05-15T15:01:05+02:00 Dinoflagellate cysts from the Upper Triassic (Norian) of northeastern Iran Ghasemi-Nejad, Ebrahim Head, Martin J. Zamani, Maryam 2018-09-27 application/pdf https://doi.org/10.1144/jm.27.2.125 https://jm.copernicus.org/articles/27/125/2008/ eng eng doi:10.1144/jm.27.2.125 https://jm.copernicus.org/articles/27/125/2008/ eISSN: 2041-4978 Text 2018 ftcopernicus https://doi.org/10.1144/jm.27.2.125 2020-07-20T16:26:48Z Upper Triassic (Norian) strata of the Miankuhi Formation in northeastern Iran have been studied palynologically, revealing a diverse but poorly preserved association of dinoflagellate cysts. Based on representatives of the genera Hebecysta, Heibergella, Rhaetogonyaulax and Sverdrupiella, the strata are assigned to the middle of the Hebecysta balmei Zone with an inferred age of early Late Norian. The association shows similarities with assemblages from Australia, New Zealand, Indonesia, Northwest Europe, arctic Canada and Alaska, indicating an interconnection of warm Tethyan waters during the Late Triassic. The occurrence of Sverdrupiella species in the clastic, near-shore marine deposits of Miankuhi, and their presence in similar sedimentary facies world-wide, indicate that this genus was well adapted to clastic shallow-marine environments. Text Arctic Alaska Copernicus Publications: E-Journals Arctic Canada New Zealand Journal of Micropalaeontology 27 2 125 134 |
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Open Polar |
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Copernicus Publications: E-Journals |
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ftcopernicus |
language |
English |
description |
Upper Triassic (Norian) strata of the Miankuhi Formation in northeastern Iran have been studied palynologically, revealing a diverse but poorly preserved association of dinoflagellate cysts. Based on representatives of the genera Hebecysta, Heibergella, Rhaetogonyaulax and Sverdrupiella, the strata are assigned to the middle of the Hebecysta balmei Zone with an inferred age of early Late Norian. The association shows similarities with assemblages from Australia, New Zealand, Indonesia, Northwest Europe, arctic Canada and Alaska, indicating an interconnection of warm Tethyan waters during the Late Triassic. The occurrence of Sverdrupiella species in the clastic, near-shore marine deposits of Miankuhi, and their presence in similar sedimentary facies world-wide, indicate that this genus was well adapted to clastic shallow-marine environments. |
format |
Text |
author |
Ghasemi-Nejad, Ebrahim Head, Martin J. Zamani, Maryam |
spellingShingle |
Ghasemi-Nejad, Ebrahim Head, Martin J. Zamani, Maryam Dinoflagellate cysts from the Upper Triassic (Norian) of northeastern Iran |
author_facet |
Ghasemi-Nejad, Ebrahim Head, Martin J. Zamani, Maryam |
author_sort |
Ghasemi-Nejad, Ebrahim |
title |
Dinoflagellate cysts from the Upper Triassic (Norian) of northeastern Iran |
title_short |
Dinoflagellate cysts from the Upper Triassic (Norian) of northeastern Iran |
title_full |
Dinoflagellate cysts from the Upper Triassic (Norian) of northeastern Iran |
title_fullStr |
Dinoflagellate cysts from the Upper Triassic (Norian) of northeastern Iran |
title_full_unstemmed |
Dinoflagellate cysts from the Upper Triassic (Norian) of northeastern Iran |
title_sort |
dinoflagellate cysts from the upper triassic (norian) of northeastern iran |
publishDate |
2018 |
url |
https://doi.org/10.1144/jm.27.2.125 https://jm.copernicus.org/articles/27/125/2008/ |
geographic |
Arctic Canada New Zealand |
geographic_facet |
Arctic Canada New Zealand |
genre |
Arctic Alaska |
genre_facet |
Arctic Alaska |
op_source |
eISSN: 2041-4978 |
op_relation |
doi:10.1144/jm.27.2.125 https://jm.copernicus.org/articles/27/125/2008/ |
op_doi |
https://doi.org/10.1144/jm.27.2.125 |
container_title |
Journal of Micropalaeontology |
container_volume |
27 |
container_issue |
2 |
container_start_page |
125 |
op_container_end_page |
134 |
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1766333123360980992 |