File Download

There are no files associated with this item.

  Links for fulltext
     (May Require Subscription)
Supplementary

Article: Synthesis of a chrono- and biostratigraphical framework for the Lower Cretaceous of Jiuquan, NW China: Implications for major evolutionary events

TitleSynthesis of a chrono- and biostratigraphical framework for the Lower Cretaceous of Jiuquan, NW China: Implications for major evolutionary events
Authors
KeywordsBiostratigraphy
Geochronology
Jehol Biota
OAEs
Early Cretaceous
Issue Date2021
PublisherElsevier BV. The Journal's web site is located at http://www.elsevier.com/locate/earscirev
Citation
Earth-Science Reviews, 2021, v. 213, p. article no. 103474 How to Cite?
AbstractWith a depositional history spanning the early Aptian to early Albian (~19 mys), the Lower Cretaceous Xinminpu Group in Jiuquan, NW China provides detailed record of an inland ecosystem responding to global climatic and environmental changes. The Xinminpu Group exhibits the most typical elements of the Jehol Biota found outside NE China, a highly diverse avifauna and a mid-Cretaceous angiosperm flora. The absence of a comprehensive stratigraphical framework for this area however limits the degree to which the unit can be interpreted relative to coeval sections and the geological records in genera. Recent fossil discoveries and radio-isotopic age data can provide a more detailed biostratigraphical and chronostratigraphical framework for Lower Cretaceous units around Jiuquan. The data complied here indicate that the Chijinpu Formation correlates with the middle-upper Yixian and lower Jiufotang formations of NE China making it early Aptian in age, and the Xiagou Formation correlates with the upper Jiufotang and Shahai formations making it late early Aptian-early Albian in age. This research further reports a novel zircon U-Pb age constraint of 112.4 ± 0.3 Ma for a basalt sample from the lowermost Zhonggou Formation, which is supported to be correlated with the Fuxin Formation of early Albian age. The Chijinpu Formation contains typical elements of the Jehol Biota, i.e. the Eosestheria-Lycoptera-Ephemeropsis trisetalis assemblage, confirming the interpretation that the Jehol Biota had reached Jiuquan during its second evolutionary stage. The Xiagou Formation contains the amphibious avifauna appearing just above OAE1a, indicating a close link between the early Ornithuromorpha evolution and early Aptian global climate changes. The Zhonggou Formation in Jiuquan records the first appearance of an angiosperm flora above OAE1b. Depositional indicators suggest a humid climate with a gradual shift to arid conditions during this time. This review paper laid foundation for the systematic study of the well-preserved Early Cretaceous ecosystem in Jiuquan, allowing to understand correlations between inland and marine environments as recorded in sediments from this critical period.
Persistent Identifierhttp://hdl.handle.net/10722/304386
ISSN
2020 Impact Factor: 12.413
2020 SCImago Journal Rankings: 3.893
ISI Accession Number ID

 

DC FieldValueLanguage
dc.contributor.authorZheng, D-
dc.contributor.authorWang, H-
dc.contributor.authorLi, S-
dc.contributor.authorWang, B-
dc.contributor.authorJarzembowski, EA-
dc.contributor.authorDong, C-
dc.contributor.authorFang, Y-
dc.contributor.authorTeng, X-
dc.contributor.authorYu, T-
dc.contributor.authorYang, L-
dc.contributor.authorLi, Y-
dc.contributor.authorZhao, X-
dc.contributor.authorXue, N-
dc.contributor.authorChang, SC-
dc.contributor.authorZhang, H-
dc.date.accessioned2021-09-23T08:59:18Z-
dc.date.available2021-09-23T08:59:18Z-
dc.date.issued2021-
dc.identifier.citationEarth-Science Reviews, 2021, v. 213, p. article no. 103474-
dc.identifier.issn0012-8252-
dc.identifier.urihttp://hdl.handle.net/10722/304386-
dc.description.abstractWith a depositional history spanning the early Aptian to early Albian (~19 mys), the Lower Cretaceous Xinminpu Group in Jiuquan, NW China provides detailed record of an inland ecosystem responding to global climatic and environmental changes. The Xinminpu Group exhibits the most typical elements of the Jehol Biota found outside NE China, a highly diverse avifauna and a mid-Cretaceous angiosperm flora. The absence of a comprehensive stratigraphical framework for this area however limits the degree to which the unit can be interpreted relative to coeval sections and the geological records in genera. Recent fossil discoveries and radio-isotopic age data can provide a more detailed biostratigraphical and chronostratigraphical framework for Lower Cretaceous units around Jiuquan. The data complied here indicate that the Chijinpu Formation correlates with the middle-upper Yixian and lower Jiufotang formations of NE China making it early Aptian in age, and the Xiagou Formation correlates with the upper Jiufotang and Shahai formations making it late early Aptian-early Albian in age. This research further reports a novel zircon U-Pb age constraint of 112.4 ± 0.3 Ma for a basalt sample from the lowermost Zhonggou Formation, which is supported to be correlated with the Fuxin Formation of early Albian age. The Chijinpu Formation contains typical elements of the Jehol Biota, i.e. the Eosestheria-Lycoptera-Ephemeropsis trisetalis assemblage, confirming the interpretation that the Jehol Biota had reached Jiuquan during its second evolutionary stage. The Xiagou Formation contains the amphibious avifauna appearing just above OAE1a, indicating a close link between the early Ornithuromorpha evolution and early Aptian global climate changes. The Zhonggou Formation in Jiuquan records the first appearance of an angiosperm flora above OAE1b. Depositional indicators suggest a humid climate with a gradual shift to arid conditions during this time. This review paper laid foundation for the systematic study of the well-preserved Early Cretaceous ecosystem in Jiuquan, allowing to understand correlations between inland and marine environments as recorded in sediments from this critical period.-
dc.languageeng-
dc.publisherElsevier BV. The Journal's web site is located at http://www.elsevier.com/locate/earscirev-
dc.relation.ispartofEarth-Science Reviews-
dc.subjectBiostratigraphy-
dc.subjectGeochronology-
dc.subjectJehol Biota-
dc.subjectOAEs-
dc.subjectEarly Cretaceous-
dc.titleSynthesis of a chrono- and biostratigraphical framework for the Lower Cretaceous of Jiuquan, NW China: Implications for major evolutionary events-
dc.typeArticle-
dc.identifier.emailZheng, D: drzheng@hku.hk-
dc.identifier.emailChang, SC: suchin@hku.hk-
dc.identifier.authorityChang, SC=rp01478-
dc.description.naturelink_to_subscribed_fulltext-
dc.identifier.doi10.1016/j.earscirev.2020.103474-
dc.identifier.scopuseid_2-s2.0-85097864835-
dc.identifier.hkuros325338-
dc.identifier.volume213-
dc.identifier.spagearticle no. 103474-
dc.identifier.epagearticle no. 103474-
dc.identifier.isiWOS:000612033200002-
dc.publisher.placeNetherlands-

Export via OAI-PMH Interface in XML Formats


OR


Export to Other Non-XML Formats