摘要
【研究目的】以新疆哈密市巴里坤县北莫钦乌拉山一带石炭纪妖魔梁组的地质时代为研究对象,补充完善地层年代证据,讨论古气候环境。【研究方法】通过对采集的孢粉化石处理鉴定、建立孢粉组合,恢复当时的植物群背景、探讨研究区古气候特征。【研究结果】根据化石组成、地层分布及与区域对比,建立了孢粉Cyclogranisporites aureus-Protohaploxypinus horizontatis(AH)组合,确定其时代为晚石炭世巴什基尔期中期。【结论】孢粉组合反映的植物群面貌与欧美-华夏植物群及安加拉植物群存在一定的差异性,与前人提出的亚安加拉植物群面貌大致符合。因此,确定研究区晚石炭世处于亚安加拉植物分区。
[Objective]This study investigates the Carboniferous Yaomoliang Formation in the Moqinwula Mountains,northern Barkol County,Hami,Xinjiang,with the aim of refining stratigraphic age constraints and reconstructing the associated paleoclimatic conditions.[Methods]By processing and identifying the collected palynological fossils and establishing palynological assemblages,than to restore the background of ancient plant communities and explore the paleoclimatic characteristics of the research area.[Results]Based on fossil assemblages,stratigraphic distribution,and regional correlation,a spore-pollen assemblage of Cyclogranisporites aureus-Protohaploxypinus horizontatis(AH)was established,indicating a middle Bashkirian age in the Late Carboniferous.[Conclusions]The spore-pollen assemblage reveals a floristic composition distinct from both the Euramerican-Cathaysian and Angara floras,but broadly consistent with the Subangaran flora proposed by previous results.Accordingly,the study area is assigned to the Subangaran floral subprovince during the Late Carboniferous.
作者
王庆同
南玲玲
姜文钦
毛方松
陈梁
石满乾
WANG Qingtong;NAN Lingling;JIANG Wenqin;MAO Fangsong;CHEN Liang;SHI Manqian(Yantai Center of Coastal Zone Geological Survey,China Geological Survey,Yantai 264000,Shandong,China;Ministry of Natural Resources Observation and Research Station of Land-Sea Interaction Field in the Yellow River Estuary,Yantai 264000,Shandong,China;Agricultural and Rural Planning CO.,LTD.,Zhengzhou 450000,Henan,China)
出处
《地质通报》
北大核心
2025年第9期1713-1721,共9页
Geological Bulletin of China
基金
中国地质调查局项目《新疆1:5万板房沟等四幅填图试点》(编号:12120114042801)
《黄河口海岸带地质环境调查与监测》(编号:DD20243124)。
关键词
孢粉
石炭纪
古气候
巴里坤地区
新疆
palynology
Carboniferous
paleoclimate
Barkol area
Xinjiang
