Upper Paleozoic glacigenic deposits of Gondwana: Stratigraphy and paleoenvironmental significance of a tillite succession in Northern Victoria Land (Antarctica)
Late Paleozoic glacial deposits are widespread in Gondwana. In Antarctica the best outcrops occur in the Central Transantarctic Mountains, Ellsworth Mountains, Pensacola Mountains, and in Southern Victoria Land, whereas they are rare and very scattered in Northern Victoria Land, which represents a l...
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ftunivsiena:oai:usiena-air.unisi.it:11365/1024367 2024-04-14T08:04:17+00:00 Upper Paleozoic glacigenic deposits of Gondwana: Stratigraphy and paleoenvironmental significance of a tillite succession in Northern Victoria Land (Antarctica) Cornamusini, Gianluca Talarico, FRANCO MARIA Cirilli, Simonetta Spina, Amalia Olivetti, Valerio Woo, Jusun Cornamusini, Gianluca Talarico, FRANCO MARIA Cirilli, Simonetta Spina, Amalia Olivetti, Valerio Woo, Jusun 2017 STAMPA http://hdl.handle.net/11365/1024367 https://doi.org/10.1016/j.sedgeo.2017.07.002 eng eng info:eu-repo/semantics/altIdentifier/wos/WOS:000410018500005 volume:358 firstpage:51 lastpage:69 numberofpages:19 journal:SEDIMENTARY GEOLOGY http://hdl.handle.net/11365/1024367 doi:10.1016/j.sedgeo.2017.07.002 info:eu-repo/semantics/altIdentifier/scopus/2-s2.0-85030625616 info:eu-repo/semantics/closedAccess Stratigraphy Diamictite Glacigenic environment Permian Antarctica Gondwana info:eu-repo/semantics/article 2017 ftunivsiena https://doi.org/10.1016/j.sedgeo.2017.07.002 2024-03-21T16:03:06Z Late Paleozoic glacial deposits are widespread in Gondwana. In Antarctica the best outcrops occur in the Central Transantarctic Mountains, Ellsworth Mountains, Pensacola Mountains, and in Southern Victoria Land, whereas they are rare and very scattered in Northern Victoria Land, which represents a linkage sector with Tasmania and eastern Australia. The aimof the present research is to define the stratigraphic setting and the environmental interpretation of a poorly studied Lower Permian glacigenic succession located near Orr Glacier in the Lanterman Range in Northern Victoria Land. It has great importance because it represents the only significant glacigenic succession for this wide area, marking and defining time and modality of a glacial-postglacial transition during the early Permian, a critical time-interval in the paleoenvironmental evolution of southern Gondwana. This succession, named here as the Lanterman Formation, lies directly on to crystalline basement, and is overlain by a thick Permian fluvial succession (Takrouna Formation). The results provided by sedimentological facies analysis and palynological analysis, integrated with a limited petrographic characterization, show a correlation framework between two isolated successions, outlining their stratigraphic architecture and subdivided into a lower glacial portion and an upper postglacial portion. The former, Asselian in age, is dominated by diamictite, sandstone, mudstone with lonestones, and carbonate deposits, suggesting repeated advance and retreat of a terrestrial glacier, with facies associations indicating environmental changes from subglacial to glaciofluvial, to glaciolacustrine. The latter is dominated by lacustrine mudstone with decreasing lonestones upward, thin bedded sandstone, conglomerate and a thick fluvial sandstone and pebbly sandstone succession at the top, signalling the transition to a fluvial system through time. The overall dataset suggests that the late Paleozoic glacigenic deposits of Northern Victoria Land record the ... Article in Journal/Newspaper Antarc* Antarctica Victoria Land Università degli Studi di Siena: USiena air Ellsworth Mountains ENVELOPE(-85.000,-85.000,-78.750,-78.750) Lanterman Range ENVELOPE(163.167,163.167,-71.667,-71.667) Orr Glacier ENVELOPE(162.867,162.867,-71.600,-71.600) Pensacola Mountains ENVELOPE(-58.000,-58.000,-83.500,-83.500) Transantarctic Mountains Victoria Land Sedimentary Geology 358 51 69 |
institution |
Open Polar |
collection |
Università degli Studi di Siena: USiena air |
op_collection_id |
ftunivsiena |
language |
English |
topic |
Stratigraphy Diamictite Glacigenic environment Permian Antarctica Gondwana |
spellingShingle |
Stratigraphy Diamictite Glacigenic environment Permian Antarctica Gondwana Cornamusini, Gianluca Talarico, FRANCO MARIA Cirilli, Simonetta Spina, Amalia Olivetti, Valerio Woo, Jusun Upper Paleozoic glacigenic deposits of Gondwana: Stratigraphy and paleoenvironmental significance of a tillite succession in Northern Victoria Land (Antarctica) |
topic_facet |
Stratigraphy Diamictite Glacigenic environment Permian Antarctica Gondwana |
description |
Late Paleozoic glacial deposits are widespread in Gondwana. In Antarctica the best outcrops occur in the Central Transantarctic Mountains, Ellsworth Mountains, Pensacola Mountains, and in Southern Victoria Land, whereas they are rare and very scattered in Northern Victoria Land, which represents a linkage sector with Tasmania and eastern Australia. The aimof the present research is to define the stratigraphic setting and the environmental interpretation of a poorly studied Lower Permian glacigenic succession located near Orr Glacier in the Lanterman Range in Northern Victoria Land. It has great importance because it represents the only significant glacigenic succession for this wide area, marking and defining time and modality of a glacial-postglacial transition during the early Permian, a critical time-interval in the paleoenvironmental evolution of southern Gondwana. This succession, named here as the Lanterman Formation, lies directly on to crystalline basement, and is overlain by a thick Permian fluvial succession (Takrouna Formation). The results provided by sedimentological facies analysis and palynological analysis, integrated with a limited petrographic characterization, show a correlation framework between two isolated successions, outlining their stratigraphic architecture and subdivided into a lower glacial portion and an upper postglacial portion. The former, Asselian in age, is dominated by diamictite, sandstone, mudstone with lonestones, and carbonate deposits, suggesting repeated advance and retreat of a terrestrial glacier, with facies associations indicating environmental changes from subglacial to glaciofluvial, to glaciolacustrine. The latter is dominated by lacustrine mudstone with decreasing lonestones upward, thin bedded sandstone, conglomerate and a thick fluvial sandstone and pebbly sandstone succession at the top, signalling the transition to a fluvial system through time. The overall dataset suggests that the late Paleozoic glacigenic deposits of Northern Victoria Land record the ... |
author2 |
Cornamusini, Gianluca Talarico, FRANCO MARIA Cirilli, Simonetta Spina, Amalia Olivetti, Valerio Woo, Jusun |
format |
Article in Journal/Newspaper |
author |
Cornamusini, Gianluca Talarico, FRANCO MARIA Cirilli, Simonetta Spina, Amalia Olivetti, Valerio Woo, Jusun |
author_facet |
Cornamusini, Gianluca Talarico, FRANCO MARIA Cirilli, Simonetta Spina, Amalia Olivetti, Valerio Woo, Jusun |
author_sort |
Cornamusini, Gianluca |
title |
Upper Paleozoic glacigenic deposits of Gondwana: Stratigraphy and paleoenvironmental significance of a tillite succession in Northern Victoria Land (Antarctica) |
title_short |
Upper Paleozoic glacigenic deposits of Gondwana: Stratigraphy and paleoenvironmental significance of a tillite succession in Northern Victoria Land (Antarctica) |
title_full |
Upper Paleozoic glacigenic deposits of Gondwana: Stratigraphy and paleoenvironmental significance of a tillite succession in Northern Victoria Land (Antarctica) |
title_fullStr |
Upper Paleozoic glacigenic deposits of Gondwana: Stratigraphy and paleoenvironmental significance of a tillite succession in Northern Victoria Land (Antarctica) |
title_full_unstemmed |
Upper Paleozoic glacigenic deposits of Gondwana: Stratigraphy and paleoenvironmental significance of a tillite succession in Northern Victoria Land (Antarctica) |
title_sort |
upper paleozoic glacigenic deposits of gondwana: stratigraphy and paleoenvironmental significance of a tillite succession in northern victoria land (antarctica) |
publishDate |
2017 |
url |
http://hdl.handle.net/11365/1024367 https://doi.org/10.1016/j.sedgeo.2017.07.002 |
long_lat |
ENVELOPE(-85.000,-85.000,-78.750,-78.750) ENVELOPE(163.167,163.167,-71.667,-71.667) ENVELOPE(162.867,162.867,-71.600,-71.600) ENVELOPE(-58.000,-58.000,-83.500,-83.500) |
geographic |
Ellsworth Mountains Lanterman Range Orr Glacier Pensacola Mountains Transantarctic Mountains Victoria Land |
geographic_facet |
Ellsworth Mountains Lanterman Range Orr Glacier Pensacola Mountains Transantarctic Mountains Victoria Land |
genre |
Antarc* Antarctica Victoria Land |
genre_facet |
Antarc* Antarctica Victoria Land |
op_relation |
info:eu-repo/semantics/altIdentifier/wos/WOS:000410018500005 volume:358 firstpage:51 lastpage:69 numberofpages:19 journal:SEDIMENTARY GEOLOGY http://hdl.handle.net/11365/1024367 doi:10.1016/j.sedgeo.2017.07.002 info:eu-repo/semantics/altIdentifier/scopus/2-s2.0-85030625616 |
op_rights |
info:eu-repo/semantics/closedAccess |
op_doi |
https://doi.org/10.1016/j.sedgeo.2017.07.002 |
container_title |
Sedimentary Geology |
container_volume |
358 |
container_start_page |
51 |
op_container_end_page |
69 |
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