Depositional environment, stratigraphy, structure and paleobiology of the Hatchery Creek Group (Early- Middle Devonian) near Wee Jasper, New South Wales
A revised depositional model of predominantly swampy rather than lacustrine conditions is proposed for the upper dark shales and mudstones (Corradigbee Formation) of the Hatchery Creek Group. The whole sequence is interpreted as a humid alluvial fan deposit, conformable on underlying limestones, wit...
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ftanucanberra:oai:openresearch-repository.anu.edu.au:1885/52957 2024-01-14T10:01:35+01:00 Depositional environment, stratigraphy, structure and paleobiology of the Hatchery Creek Group (Early- Middle Devonian) near Wee Jasper, New South Wales Hunt, James R Young, Gavin http://hdl.handle.net/1885/52957 https://doi.org/10.1080/08120099.2012.625447 https://openresearch-repository.anu.edu.au/bitstream/1885/52957/7/Depositional_environment_Hunt_Young_AJES_2011.pdf.jpg https://openresearch-repository.anu.edu.au/bitstream/1885/52957/9/C1-11-Depositional_environment%252C_stratigraphy%252C_structure.pdf.jpg https://openresearch-repository.anu.edu.au/bitstream/1885/52957/11/01_Hunt_Depositional_environment,_2012.pdf.jpg https://openresearch-repository.anu.edu.au/bitstream/1885/52957/13/02_Hunt_Depositional_environment,_2012.pdf.jpg unknown Blackwell Publishing Ltd 0812-0099 http://hdl.handle.net/1885/52957 doi:10.1080/08120099.2012.625447 https://openresearch-repository.anu.edu.au/bitstream/1885/52957/7/Depositional_environment_Hunt_Young_AJES_2011.pdf.jpg https://openresearch-repository.anu.edu.au/bitstream/1885/52957/9/C1-11-Depositional_environment%252C_stratigraphy%252C_structure.pdf.jpg https://openresearch-repository.anu.edu.au/bitstream/1885/52957/11/01_Hunt_Depositional_environment,_2012.pdf.jpg https://openresearch-repository.anu.edu.au/bitstream/1885/52957/13/02_Hunt_Depositional_environment,_2012.pdf.jpg Australian Journal of Earth Sciences Keywords: alluvial deposit alluvial fan cyclic sedimentation depositional environment Emsian fish folding fossil assemblage gastropod limestone mudstone paleobiology paleosol root system shale stratigraphy Australia New South Wales Wee Jasper Art calcareous nodules freshwater gastropods Hatchery Creek Group humid alluvial fan paleosols plants root systems Journal article ftanucanberra https://doi.org/10.1080/08120099.2012.625447 2023-12-15T09:37:51Z A revised depositional model of predominantly swampy rather than lacustrine conditions is proposed for the upper dark shales and mudstones (Corradigbee Formation) of the Hatchery Creek Group. The whole sequence is interpreted as a humid alluvial fan deposit, conformable on underlying limestones, with a total thickness of about 1800 m. Cyclic sedimentation probably resulted from climatic fluctuations much longer than seasonal events and may reflect Milankovitch cyclicity. The most recent Devonian time-scale calibrations indicate that much of the Hatchery Creek sequence could have been deposited during the Emsian, giving adequate time for subsequent folding during the Middle Devonian Tabberabberan episode. The Corradigbee Formation contains a unique fossil fish assemblage, not represented elsewhere in eastern Australia, but sharing features with Early Devonian faunas from Yunnan, China, and the Middle Devonian Aztec Siltstone fish fauna of Victoria Land, Antarctica. The first invertebrate fossils are recorded from the Hatchery Creek Group (freshwater gastropods, indeterminate arthropods). Abundant plant remains at some localities include lycopsids, some early leaf-like structures, and deep root systems preserved in paleosols, the earliest record of such features from Australia. The new data are inconsistent with Northern Hemisphere fossil evidence linked to a modelled dramatic drop in CO2 levels and rise in O2 during the Devonian Period, but comply with some other evidence that the first forests may have evolved somewhat earlier in East Gondwana than elsewhere. Article in Journal/Newspaper Antarc* Antarctica Victoria Land Australian National University: ANU Digital Collections Victoria Land Hatchery Creek ENVELOPE(-128.553,-128.553,54.383,54.383) Australian Journal of Earth Sciences 59 3 355 371 |
institution |
Open Polar |
collection |
Australian National University: ANU Digital Collections |
op_collection_id |
ftanucanberra |
language |
unknown |
topic |
Keywords: alluvial deposit alluvial fan cyclic sedimentation depositional environment Emsian fish folding fossil assemblage gastropod limestone mudstone paleobiology paleosol root system shale stratigraphy Australia New South Wales Wee Jasper Art calcareous nodules freshwater gastropods Hatchery Creek Group humid alluvial fan paleosols plants root systems |
spellingShingle |
Keywords: alluvial deposit alluvial fan cyclic sedimentation depositional environment Emsian fish folding fossil assemblage gastropod limestone mudstone paleobiology paleosol root system shale stratigraphy Australia New South Wales Wee Jasper Art calcareous nodules freshwater gastropods Hatchery Creek Group humid alluvial fan paleosols plants root systems Hunt, James R Young, Gavin Depositional environment, stratigraphy, structure and paleobiology of the Hatchery Creek Group (Early- Middle Devonian) near Wee Jasper, New South Wales |
topic_facet |
Keywords: alluvial deposit alluvial fan cyclic sedimentation depositional environment Emsian fish folding fossil assemblage gastropod limestone mudstone paleobiology paleosol root system shale stratigraphy Australia New South Wales Wee Jasper Art calcareous nodules freshwater gastropods Hatchery Creek Group humid alluvial fan paleosols plants root systems |
description |
A revised depositional model of predominantly swampy rather than lacustrine conditions is proposed for the upper dark shales and mudstones (Corradigbee Formation) of the Hatchery Creek Group. The whole sequence is interpreted as a humid alluvial fan deposit, conformable on underlying limestones, with a total thickness of about 1800 m. Cyclic sedimentation probably resulted from climatic fluctuations much longer than seasonal events and may reflect Milankovitch cyclicity. The most recent Devonian time-scale calibrations indicate that much of the Hatchery Creek sequence could have been deposited during the Emsian, giving adequate time for subsequent folding during the Middle Devonian Tabberabberan episode. The Corradigbee Formation contains a unique fossil fish assemblage, not represented elsewhere in eastern Australia, but sharing features with Early Devonian faunas from Yunnan, China, and the Middle Devonian Aztec Siltstone fish fauna of Victoria Land, Antarctica. The first invertebrate fossils are recorded from the Hatchery Creek Group (freshwater gastropods, indeterminate arthropods). Abundant plant remains at some localities include lycopsids, some early leaf-like structures, and deep root systems preserved in paleosols, the earliest record of such features from Australia. The new data are inconsistent with Northern Hemisphere fossil evidence linked to a modelled dramatic drop in CO2 levels and rise in O2 during the Devonian Period, but comply with some other evidence that the first forests may have evolved somewhat earlier in East Gondwana than elsewhere. |
format |
Article in Journal/Newspaper |
author |
Hunt, James R Young, Gavin |
author_facet |
Hunt, James R Young, Gavin |
author_sort |
Hunt, James R |
title |
Depositional environment, stratigraphy, structure and paleobiology of the Hatchery Creek Group (Early- Middle Devonian) near Wee Jasper, New South Wales |
title_short |
Depositional environment, stratigraphy, structure and paleobiology of the Hatchery Creek Group (Early- Middle Devonian) near Wee Jasper, New South Wales |
title_full |
Depositional environment, stratigraphy, structure and paleobiology of the Hatchery Creek Group (Early- Middle Devonian) near Wee Jasper, New South Wales |
title_fullStr |
Depositional environment, stratigraphy, structure and paleobiology of the Hatchery Creek Group (Early- Middle Devonian) near Wee Jasper, New South Wales |
title_full_unstemmed |
Depositional environment, stratigraphy, structure and paleobiology of the Hatchery Creek Group (Early- Middle Devonian) near Wee Jasper, New South Wales |
title_sort |
depositional environment, stratigraphy, structure and paleobiology of the hatchery creek group (early- middle devonian) near wee jasper, new south wales |
publisher |
Blackwell Publishing Ltd |
url |
http://hdl.handle.net/1885/52957 https://doi.org/10.1080/08120099.2012.625447 https://openresearch-repository.anu.edu.au/bitstream/1885/52957/7/Depositional_environment_Hunt_Young_AJES_2011.pdf.jpg https://openresearch-repository.anu.edu.au/bitstream/1885/52957/9/C1-11-Depositional_environment%252C_stratigraphy%252C_structure.pdf.jpg https://openresearch-repository.anu.edu.au/bitstream/1885/52957/11/01_Hunt_Depositional_environment,_2012.pdf.jpg https://openresearch-repository.anu.edu.au/bitstream/1885/52957/13/02_Hunt_Depositional_environment,_2012.pdf.jpg |
long_lat |
ENVELOPE(-128.553,-128.553,54.383,54.383) |
geographic |
Victoria Land Hatchery Creek |
geographic_facet |
Victoria Land Hatchery Creek |
genre |
Antarc* Antarctica Victoria Land |
genre_facet |
Antarc* Antarctica Victoria Land |
op_source |
Australian Journal of Earth Sciences |
op_relation |
0812-0099 http://hdl.handle.net/1885/52957 doi:10.1080/08120099.2012.625447 https://openresearch-repository.anu.edu.au/bitstream/1885/52957/7/Depositional_environment_Hunt_Young_AJES_2011.pdf.jpg https://openresearch-repository.anu.edu.au/bitstream/1885/52957/9/C1-11-Depositional_environment%252C_stratigraphy%252C_structure.pdf.jpg https://openresearch-repository.anu.edu.au/bitstream/1885/52957/11/01_Hunt_Depositional_environment,_2012.pdf.jpg https://openresearch-repository.anu.edu.au/bitstream/1885/52957/13/02_Hunt_Depositional_environment,_2012.pdf.jpg |
op_doi |
https://doi.org/10.1080/08120099.2012.625447 |
container_title |
Australian Journal of Earth Sciences |
container_volume |
59 |
container_issue |
3 |
container_start_page |
355 |
op_container_end_page |
371 |
_version_ |
1788067348772552704 |