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Expression of the early Aptian Oceanic Anoxic Event (OAE) 1a in lacustrine depositional systems of East China
Zhang, Xiangyu1,2; Li, Shoujun1,3; Wang, Xuxue1; Zhao, Xiuli1,3; Yin, Tiantao1,4
2021
Source PublicationGLOBAL AND PLANETARY CHANGE
ISSN0921-8181
Volume196Pages:16
Abstract

The early Aptian (similar to 120 Ma) Oceanic Anoxic Event 1a (OAE 1a) was associated with marked changes in palaeoclimate linked to a perturbation of the global carbon cycle. While it is well-studied in the marine realm, OAE 1a is poorly known from continental records. Here, we fill that knowledge-gap by describing OAE 1a from lacustrine facies in the East Asia continental margin (Jiaolai Basin and Lingshan Island in eastern China). Specifically, we integrate data from bulk organic carbon-isotopes (delta C-13(org)), total organic carbon (TOC), and redox-and productivity-sensitive trace elements, as well as existing records on depositional environments, clay mineral compositions, elemental geochemistry and the latest detrital zircon U-Pb ages. We propose a conceptual model of the response of the lake system to OAE 1a through analysis of the palaeoenvironmental and palaeoclimatic context. During the initial stage, an extreme greenhouse climatic event resulted in an abrupt increase in palaeosalinity in the lake system. This led to anoxic conditions, resulting in a high preservation rate of TOC and the development of organic-rich black shale. Organic carbon isotopes documented in the organic-rich black shale show negative and then positive excursions, consistent with the carbon cycle disturbance found in marine OAE 1a records. In addition, the data show that this event may have been associated with a transition from an extreme greenhouse climate to a cooling phase. The framework presented here facilitates further research on the expression of OAE 1a in continental ecosystems and its fingerprint in lacustrine depositional systems.

KeywordOAE 1a Terrestrial ecosystem Organic carbon-isotope Total organic carbon Redox and productivity sensitive trace elements
DOI10.1016/j.gloplacha.2020.103370
Indexed BySCI
Language英语
WOS KeywordCRETACEOUS SEDIMENTARY-ROCKS ; SEA-SURFACE TEMPERATURES ; JIAOLAI BASIN ; GARGANO PROMONTORY ; PLATFORM MARGIN ; OROGENIC BELT ; STRATIGRAPHY ; EVOLUTION ; RECORD ; CARBON
Funding ProjectKey Laboratory of Stratigraphy and Palaeontology, Ministry of Natural Resources[KLSP 190102] ; State Key Laboratory of Palaeobiology and Stratigraphy (Nanjing Institute of Geology and Palaeontology, CAS)[123104] ; Shandong University of Science and Technology[SDKDYC 190104]
WOS Research AreaPhysical Geography ; Geology
WOS SubjectGeography, Physical ; Geosciences, Multidisciplinary
WOS IDWOS:000607221200003
Funding OrganizationKey Laboratory of Stratigraphy and Palaeontology, Ministry of Natural Resources ; State Key Laboratory of Palaeobiology and Stratigraphy (Nanjing Institute of Geology and Palaeontology, CAS) ; Shandong University of Science and Technology
PublisherELSEVIER
Document Type期刊论文
Identifierhttp://ir.nigpas.ac.cn/handle/332004/37717
Collection中国科学院南京地质古生物研究所
Corresponding AuthorZhang, Xiangyu; Li, Shoujun
Affiliation1.Shandong Univ Sci & Technol, Coll Earth Sci & Engn, Qingdao 266590, Shandong, Peoples R China
2.Minist Nat Resources, Key Lab Stratig & Palaeontol, Beijing 100037, Peoples R China
3.Chinese Acad Sci, Nanjing Inst Geol & Paleontol, State Key Lab Palaeobiol & Stratig, Nanjing 210008, Jiangsu, Peoples R China
4.China Chem Geol & Mine Bur, Shandong Geol Prospecting Inst, Jinan 250013, Shandong, Peoples R China
Corresponding Author AffilicationNanjing Institute of Geology and Palaeonotology,CAS
Recommended Citation
GB/T 7714
Zhang, Xiangyu,Li, Shoujun,Wang, Xuxue,et al. Expression of the early Aptian Oceanic Anoxic Event (OAE) 1a in lacustrine depositional systems of East China[J]. GLOBAL AND PLANETARY CHANGE,2021,196:16.
APA Zhang, Xiangyu,Li, Shoujun,Wang, Xuxue,Zhao, Xiuli,&Yin, Tiantao.(2021).Expression of the early Aptian Oceanic Anoxic Event (OAE) 1a in lacustrine depositional systems of East China.GLOBAL AND PLANETARY CHANGE,196,16.
MLA Zhang, Xiangyu,et al."Expression of the early Aptian Oceanic Anoxic Event (OAE) 1a in lacustrine depositional systems of East China".GLOBAL AND PLANETARY CHANGE 196(2021):16.
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