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Late Early Cretaceous climate and pCO(2) estimates in the Liupanshan Basin, Northwest China
Du, Baoxia1,2,3; Lei, Xiangtong1,2; Zhang, Mingzhen4; Wang, Sen1,2; Li, Aijing1,2; Du, Zhen1,2; Xing, Weiwei5
2018-08-15
Source PublicationPALAEOGEOGRAPHY PALAEOCLIMATOLOGY PALAEOECOLOGY
ISSN0031-0182
Volume503Pages:26-39
Abstract

The extinct conifer family Cheirolepidiaceae, especially Pseudofrenelopsis, is commonly used to reconstruct the atmospheric palaeo-CO2 concentration (pCO(2) ) during the Cretaceous period. In recent years, many Pseudofrenelopsis specimens have been collected from the uppermost stratum of the Naijiahe Formation in the Liupanshan Basin, Ningxia Hui Autonomous Region, Northwest China. The stomatal parameters, such as stomatal density, stomatal index, stomatal pore length, and stomatal pore depth, and the stable carbon isotope composition of the present Pseudofrenelopsis were analyzed. The palaeo-CO2 levels of the Liupanshan Basin during the late Early Cretaceous (late Albian) were reconstructed using stomata] ratio (SR) and mechanistic model approaches. The SR method yielded a semi-quantitative pCO(2) estimate of 620 ppmv on the basis of the Recent standardization and 1030 ppmv on the basis of the Carboniferous standardization, which show similarities with other SR-based and geochemical-based reconstructions for the late Early Cretaceous. The pCO(2) was about 670 ppmv on the basis of mechanistic model method, similar to the estimated pCO(2) values recovered by the SR method corrected with the Recent standardization. Based on comparative studies of previously published pCO(2) results of the Early Cretaceous, pCO(2) levels varied during the Early Cretaceous, and pCO(2) was relatively stable during the late Early Cretaceous. Furthermore, environmental conditions of the Liupanshan Basin during the late Early Cretaceous were studied. The stable carbon isotope composition of Pseudofrenelopsis leaves ranged from - 21.5 parts per thousand to - 24.3 parts per thousand, with an average of - 22.8 parts per thousand, indicating an arid/semi-arid and high-evaporation climate during the late Early Cretaceous in the Liupanshan Basin. These environmental conditions were also supported by palynological, lithological, and geochemical evidence.

KeywordReconstruction Pseudofrenelopsis Stomatal Ratio Mechanistic Model Carbon Isotope Palaeoclimate
DOI10.1016/j.palaeo.2018.04.023
Language英语
WOS KeywordAtmospheric Carbon-dioxide ; Stable Isotopic Composition ; Leaf Stomatal Frequency ; Living Fossil Ginkgo ; Ancient Co2 Levels ; Phanerozoic Time ; Land Plants ; Pedogenic Carbonates ; Seawater Composition ; Cenozoic Evolution
Funding ProjectNational Natural Science Foundation of China[41402007] ; National Natural Science Foundation of China[41602023] ; State Key Laboratory of Palaeobiology and Stratigraphy (Nanjing Institute of Geology and Palaeontology, CAS)[153102]
WOS Research AreaPhysical Geography ; Geology ; Paleontology
WOS SubjectGeography, Physical ; Geosciences, Multidisciplinary ; Paleontology
WOS IDWOS:000435624600003
Funding OrganizationNational Natural Science Foundation of China ; State Key Laboratory of Palaeobiology and Stratigraphy (Nanjing Institute of Geology and Palaeontology, CAS)
PublisherELSEVIER SCIENCE BV
Citation statistics
Cited Times:1[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://ir.nigpas.ac.cn/handle/332004/17062
Collection中国科学院南京地质古生物研究所
Corresponding AuthorDu, Baoxia; Zhang, Mingzhen
Affiliation1.Lanzhou Univ, Sch Earth Sci, Lanzhou 730000, Gansu, Peoples R China
2.Key Lab Mineral Resources Western China Gansu Pro, Lanzhou 730000, Gansu, Peoples R China
3.Chinese Acad Sci, Nanjing Inst Geol & Palaeontol, State Key Lab Palaeobiol & Stratig, Nanjing 210008, Jiangsu, Peoples R China
4.Chinese Acad Sci, Northwest Inst Ecoenvironm & Resources, Gansu Prov Key Lab Petr Resources Res, Key Lab Petr Resources, Lanzhou 730000, Gansu, Peoples R China
5.Hebei Inst Reg Geol & Mineral Survey, Langfang 065000, Hebei, Peoples R China
First Author AffilicationNanjing Institute of Geology and Palaeonotology,CAS
Corresponding Author AffilicationNanjing Institute of Geology and Palaeonotology,CAS
Recommended Citation
GB/T 7714
Du, Baoxia,Lei, Xiangtong,Zhang, Mingzhen,et al. Late Early Cretaceous climate and pCO(2) estimates in the Liupanshan Basin, Northwest China[J]. PALAEOGEOGRAPHY PALAEOCLIMATOLOGY PALAEOECOLOGY,2018,503:26-39.
APA Du, Baoxia.,Lei, Xiangtong.,Zhang, Mingzhen.,Wang, Sen.,Li, Aijing.,...&Xing, Weiwei.(2018).Late Early Cretaceous climate and pCO(2) estimates in the Liupanshan Basin, Northwest China.PALAEOGEOGRAPHY PALAEOCLIMATOLOGY PALAEOECOLOGY,503,26-39.
MLA Du, Baoxia,et al."Late Early Cretaceous climate and pCO(2) estimates in the Liupanshan Basin, Northwest China".PALAEOGEOGRAPHY PALAEOCLIMATOLOGY PALAEOECOLOGY 503(2018):26-39.
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