晚三叠世卡尼期湿润幕的陆相响应研究:现状与展望  

TERRESTRIAL RESPONSES TO THE CARNIAN PLUVIAL EPISODE IN THE LATE TRIASSIC:RESEARCH STATUS AND PROSPECTS

作　　者：赵向东 薛乃华 彭俊刚 张海春[2] 王博[2] ZHAO Xiangdong;XUE Naihua;PENG Jungang;ZHANG Haichun;WANG Bo(Key Laboratory of Vertebrate Evolution and Human Origins,Institute of Vertebrate Paleontology and Paleoanthropology,Chinese Academy of Sciences,Beijing 100044;State Key Laboratory of Palaeobiology and Stratigraphy,Nanjing Institute of Geology and Paleontology,Chinese Academy of Sciences,Nanjing 210008,Jiangsu;Archaeology,Environmental Changes&Geo-Chemistry,Vrije Universiteit Brussel,Brussels 1050,Belgium;Institute of Geology and Palaeontology,University of Münster,Münster 48149,Germany)

机构地区：[1]中国科学院古脊椎动物与古人类研究所,中国科学院脊椎动物演化与人类起源重点实验室,北京100044 [2]中国科学院南京地质古生物研究所,现代古生物学和地层学国家重点实验室,江苏南京210008 [3]布鲁塞尔自由大学(荷语),考古学、环境变化与地球化学研究部,比利时布鲁塞尔1050 [4]明斯特大学,地质古生物研究所,德国明斯特48149

出　　处：《第四纪研究》2024年第5期1127-1140,共14页Quaternary Sciences

基　　金：国家自然科学基金项目(批准号:42293280和42288201)资助。

摘　　要：卡尼期湿润幕(Carnian Pluvial Episode,缩写为CPE,约234~232 Ma)是中生代最重要的极热事件之一,也是近十年来地学领域的一大研究热点。近年来,学界应用多种指标对CPE的陆相响应开展了细致的研究,在气候干湿变换、触发机制和生物多样性变化等方面取得了诸多新认识。本文系统梳理了CPE期间的陆相沉积特征、孢粉化石记录、地球化学信号与陆地生物面貌,对新近的研究进展进行了回顾与总结。目前,卡尼期大部分陆相沉积的年代约束证据较弱,开展综合地层学工作是不同盆地精细对比的基础。在CPE全球水循环加快的背景下,陆地不同地区的干湿气候变化可能具有较大差异性。陆相地层的高分辨率多指标分析将为精细约束CPE的触发及结束过程起到关键作用。The Carnian Pluvial Episode(CPE,ca.234~232Ma)is one of the most significant hyperthermal events in the Mesozoic Era and has also been a pivotal topic in geosciences over the past decade.In recent years,geologists have successively conducted comprehensive research on the terrestrial response of the CPE through multiple proxies,resulting in a wealth of new insights into climate change,triggering mechanisms and biodiversity changes.This paper presents a summary of the continental sedimentation characteristics,pollen record,geochemical signals and terrestrial biological features during the CPE.The CPE is characterized by an increase in freshwater lacustrine,deltaic,and coal-bearing sediments,accompanied by an absence of evaporites.The diversity of terrestrial hygrophytic plants and freshwater algae significantly increased during the CPE,indicating a remarkable enhancement of the hydrological cycling.However,notable arid climates developed in regions such as the Central European Basin,UK,Brazil and parts of Antarctica,possibly showing that regional climate variation was not uniform under high-temperature regimes.Some palynological records demonstrating a wet-dry transition are not synchronous with the end of the carbon isotope negative excursion,requiring a definition of the end of the CPE to avoid confusion in comparing different stages of this event.Major terrestrial life changes during the CPE included the extinction of certain tetrapod groups,the radiation of dinosaurs,bennettitaleans and conifers,the origin of crocodiles and mammals,and the first appearance of amber inclusions.However,accurately reconstructing the relationship between biota and the environment during the CPE remains challenging due to the incompleteness of the fossil record and the low precision of age constraints in terrestrial sediments.Therefore,this review highlights the need for comprehensive stratigraphic work to facilitate accurate cross-basin correlation.Moreover,considering the intensified hydrological cycle during the CPE,it is likely t

关 键 词：三叠纪 极热事件 陆地生态系统 碳循环 大火成岩省 

分 类 号：P534.51[天文地球—古生物学与地层学] P532[天文地球—地质学] P911.5