Xenoxylon junggarensis sp nov., a new gymnospermous fossil wood from the Norian (Triassic) Huangshanjie Formation in northwestern China, and its palaeoclimatic implications
A permineralized gymnospermous wood, Xenoxylon junggarensis sp. nov., is described from the Norian (upper Triassic) Huangshanjie Formation in Dalongkou Section, Jimsar County, Xinjiang Uygur Autonomous Region, northwestern China. The pycnoxylic wood consists of thick-walled tracheids and thin-walled...
Published in: | Palaeogeography, Palaeoclimatology, Palaeoecology |
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Format: | Report |
Language: | English |
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ELSEVIER SCIENCE BV
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Online Access: | http://ir.nigpas.ac.cn/handle/332004/21813 https://doi.org/10.1016/j.palaeo.2015.10.021 |
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ftchinacscnigpas:oai:ir.nigpas.ac.cn:332004/21813 2023-05-15T13:15:21+02:00 Xenoxylon junggarensis sp nov., a new gymnospermous fossil wood from the Norian (Triassic) Huangshanjie Formation in northwestern China, and its palaeoclimatic implications Wan, Mingli Zhou, Weiming Tang, Peng Liu, Lujun Wang, Jun 2016 http://ir.nigpas.ac.cn/handle/332004/21813 https://doi.org/10.1016/j.palaeo.2015.10.021 英语 eng ELSEVIER SCIENCE BV PALAEOGEOGRAPHY PALAEOCLIMATOLOGY PALAEOECOLOGY http://ir.nigpas.ac.cn/handle/332004/21813 doi:10.1016/j.palaeo.2015.10.021 Fossil wood Xenoxylon junggarensis sp nov Triassic Growth ring Palaeoclimate Xinjiang CENTRAL NORTH SLOPE ALEXANDER ISLAND GENUS XENOXYLON TREE GROWTH BASIN ANTARCTICA CLIMATE FOREST RINGS ASIA Physical Geography Geology Paleontology Geography Physical Geosciences Multidisciplinary 期刊论文 2016 ftchinacscnigpas https://doi.org/10.1016/j.palaeo.2015.10.021 2019-08-14T12:45:03Z A permineralized gymnospermous wood, Xenoxylon junggarensis sp. nov., is described from the Norian (upper Triassic) Huangshanjie Formation in Dalongkou Section, Jimsar County, Xinjiang Uygur Autonomous Region, northwestern China. The pycnoxylic wood consists of thick-walled tracheids and thin-walled rays. It is characterized by commonly rounded to very compressed, contiguous or sometimes separated uniseriate, occasionally rounded and alternate biseriate radial pits and one or two simple, large pits in each cross-field. The fossil wood genus Xenoxylon Gothan is known to be an indicator of cooler and/or wetter climates in the boreal hemisphere during the Mesozoic. Its occurrence in the Huangshanjie Formation from Junggar Basin, together with the palaeobotanical and palynological data, indicates that a wet and temperate climate prevailed in the northern Xinjiang during the Norian interval. The mean sensitivity of analysis of 22 growth rings is 036, suggesting a seasonal response to climate. Growth rings in the fossil woods are large (2.3 mm average with a maximum of 5.44 mm), representing either a longer growing season or more favorable conditions for growth, including readily available water and higher temperature. Based on a considerable amount of earlywood and a small percentage of latewood and some indirect evidence, it is hypothesized that growth of X. junggarensis in the high-latitude Junggar Basin in the late Triassic was limited by light levels. (C) 2015 Elsevier B.V. All rights reserved. Report Alexander Island Antarc* Antarctica Nanjing Institute of Geology and Palaeontology: NIGPAS OpenIR (Chinese Academy of Sciences) Alexander Island ENVELOPE(-69.895,-69.895,-71.287,-71.287) Palaeogeography, Palaeoclimatology, Palaeoecology 441 679 687 |
institution |
Open Polar |
collection |
Nanjing Institute of Geology and Palaeontology: NIGPAS OpenIR (Chinese Academy of Sciences) |
op_collection_id |
ftchinacscnigpas |
language |
English |
topic |
Fossil wood Xenoxylon junggarensis sp nov Triassic Growth ring Palaeoclimate Xinjiang CENTRAL NORTH SLOPE ALEXANDER ISLAND GENUS XENOXYLON TREE GROWTH BASIN ANTARCTICA CLIMATE FOREST RINGS ASIA Physical Geography Geology Paleontology Geography Physical Geosciences Multidisciplinary |
spellingShingle |
Fossil wood Xenoxylon junggarensis sp nov Triassic Growth ring Palaeoclimate Xinjiang CENTRAL NORTH SLOPE ALEXANDER ISLAND GENUS XENOXYLON TREE GROWTH BASIN ANTARCTICA CLIMATE FOREST RINGS ASIA Physical Geography Geology Paleontology Geography Physical Geosciences Multidisciplinary Wan, Mingli Zhou, Weiming Tang, Peng Liu, Lujun Wang, Jun Xenoxylon junggarensis sp nov., a new gymnospermous fossil wood from the Norian (Triassic) Huangshanjie Formation in northwestern China, and its palaeoclimatic implications |
topic_facet |
Fossil wood Xenoxylon junggarensis sp nov Triassic Growth ring Palaeoclimate Xinjiang CENTRAL NORTH SLOPE ALEXANDER ISLAND GENUS XENOXYLON TREE GROWTH BASIN ANTARCTICA CLIMATE FOREST RINGS ASIA Physical Geography Geology Paleontology Geography Physical Geosciences Multidisciplinary |
description |
A permineralized gymnospermous wood, Xenoxylon junggarensis sp. nov., is described from the Norian (upper Triassic) Huangshanjie Formation in Dalongkou Section, Jimsar County, Xinjiang Uygur Autonomous Region, northwestern China. The pycnoxylic wood consists of thick-walled tracheids and thin-walled rays. It is characterized by commonly rounded to very compressed, contiguous or sometimes separated uniseriate, occasionally rounded and alternate biseriate radial pits and one or two simple, large pits in each cross-field. The fossil wood genus Xenoxylon Gothan is known to be an indicator of cooler and/or wetter climates in the boreal hemisphere during the Mesozoic. Its occurrence in the Huangshanjie Formation from Junggar Basin, together with the palaeobotanical and palynological data, indicates that a wet and temperate climate prevailed in the northern Xinjiang during the Norian interval. The mean sensitivity of analysis of 22 growth rings is 036, suggesting a seasonal response to climate. Growth rings in the fossil woods are large (2.3 mm average with a maximum of 5.44 mm), representing either a longer growing season or more favorable conditions for growth, including readily available water and higher temperature. Based on a considerable amount of earlywood and a small percentage of latewood and some indirect evidence, it is hypothesized that growth of X. junggarensis in the high-latitude Junggar Basin in the late Triassic was limited by light levels. (C) 2015 Elsevier B.V. All rights reserved. |
format |
Report |
author |
Wan, Mingli Zhou, Weiming Tang, Peng Liu, Lujun Wang, Jun |
author_facet |
Wan, Mingli Zhou, Weiming Tang, Peng Liu, Lujun Wang, Jun |
author_sort |
Wan, Mingli |
title |
Xenoxylon junggarensis sp nov., a new gymnospermous fossil wood from the Norian (Triassic) Huangshanjie Formation in northwestern China, and its palaeoclimatic implications |
title_short |
Xenoxylon junggarensis sp nov., a new gymnospermous fossil wood from the Norian (Triassic) Huangshanjie Formation in northwestern China, and its palaeoclimatic implications |
title_full |
Xenoxylon junggarensis sp nov., a new gymnospermous fossil wood from the Norian (Triassic) Huangshanjie Formation in northwestern China, and its palaeoclimatic implications |
title_fullStr |
Xenoxylon junggarensis sp nov., a new gymnospermous fossil wood from the Norian (Triassic) Huangshanjie Formation in northwestern China, and its palaeoclimatic implications |
title_full_unstemmed |
Xenoxylon junggarensis sp nov., a new gymnospermous fossil wood from the Norian (Triassic) Huangshanjie Formation in northwestern China, and its palaeoclimatic implications |
title_sort |
xenoxylon junggarensis sp nov., a new gymnospermous fossil wood from the norian (triassic) huangshanjie formation in northwestern china, and its palaeoclimatic implications |
publisher |
ELSEVIER SCIENCE BV |
publishDate |
2016 |
url |
http://ir.nigpas.ac.cn/handle/332004/21813 https://doi.org/10.1016/j.palaeo.2015.10.021 |
long_lat |
ENVELOPE(-69.895,-69.895,-71.287,-71.287) |
geographic |
Alexander Island |
geographic_facet |
Alexander Island |
genre |
Alexander Island Antarc* Antarctica |
genre_facet |
Alexander Island Antarc* Antarctica |
op_relation |
PALAEOGEOGRAPHY PALAEOCLIMATOLOGY PALAEOECOLOGY http://ir.nigpas.ac.cn/handle/332004/21813 doi:10.1016/j.palaeo.2015.10.021 |
op_doi |
https://doi.org/10.1016/j.palaeo.2015.10.021 |
container_title |
Palaeogeography, Palaeoclimatology, Palaeoecology |
container_volume |
441 |
container_start_page |
679 |
op_container_end_page |
687 |
_version_ |
1766268132785127424 |