Late Early Cretaceous climate and pCO(2) estimates in the Liupanshan Basin, Northwest China

doi:10.1016/j.palaeo.2018.04.023

CORC > 地质与地球物理研究所 > 中国科学院地质与地球物理研究所 > 兰州油气中心

	Late Early Cretaceous climate and pCO(2) estimates in the Liupanshan Basin, Northwest China
	Du, Baoxia 1,2,3; Lei, Xiangtong 1,2; Zhang, Mingzhen 4; Wang, Sen 1,2; Li, Aijing 1,2; Du, Zhen 1,2; Xing, Weiwei 5
刊名	PALAEOGEOGRAPHY PALAEOCLIMATOLOGY PALAEOECOLOGY
	2018-08-15
卷号	503 页码:26-39
关键词	Reconstruction Pseudofrenelopsis Stomatal ratio Mechanistic model Carbon isotope Palaeoclimate
ISSN号	0031-0182
DOI	10.1016/j.palaeo.2018.04.023
英文摘要	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.
资助项目	National 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关键词	ATMOSPHERIC CARBON-DIOXIDE ; STABLE ISOTOPIC COMPOSITION ; LEAF STOMATAL FREQUENCY ; LIVING FOSSIL GINKGO ; ANCIENT CO2 LEVELS ; PHANEROZOIC TIME ; LAND PLANTS ; PEDOGENIC CARBONATES ; SEAWATER COMPOSITION ; CENOZOIC EVOLUTION
WOS研究方向	Physical Geography ; Geology ; Paleontology
语种	英语
出版者	ELSEVIER SCIENCE BV
WOS记录号	WOS:000435624600003
资助机构	National Natural Science Foundation of China ; National Natural Science Foundation of China ; State Key Laboratory of Palaeobiology and Stratigraphy (Nanjing Institute of Geology and Palaeontology, CAS) ; State Key Laboratory of Palaeobiology and Stratigraphy (Nanjing Institute of Geology and Palaeontology, CAS) ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; State Key Laboratory of Palaeobiology and Stratigraphy (Nanjing Institute of Geology and Palaeontology, CAS) ; State Key Laboratory of Palaeobiology and Stratigraphy (Nanjing Institute of Geology and Palaeontology, CAS) ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; State Key Laboratory of Palaeobiology and Stratigraphy (Nanjing Institute of Geology and Palaeontology, CAS) ; State Key Laboratory of Palaeobiology and Stratigraphy (Nanjing Institute of Geology and Palaeontology, CAS) ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; State Key Laboratory of Palaeobiology and Stratigraphy (Nanjing Institute of Geology and Palaeontology, CAS) ; State Key Laboratory of Palaeobiology and Stratigraphy (Nanjing Institute of Geology and Palaeontology, CAS)
内容类型	期刊论文
源URL	[http://ir.iggcas.ac.cn/handle/132A11/88183]
专题	地质与地球物理研究所_兰州油气中心
通讯作者	Du, Baoxia; Zhang, Mingzhen
作者单位	1.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
推荐引用方式 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.