ISSN 1006-3021 CN11-3474/P
Published bimonthly started in 1979
河套盆地段黄河的形成时代和物源分析:来自碎屑锆石的证据
投稿时间:2020-02-14  修订日期:2020-03-05
关键词:Source  Terrace  Hetao Basin  Yellow River
基金项目:
作者单位E-mail
李维东) 中国地质科学院 wadeli55@outlook.com 
赵希涛) 中国科学院地质与地球物理研究所  
杨艳) 中国地质科学院  
吴珍汉) 中国地质科学院  
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摘要:
Formation age and provenance analysis of the Yellow River in the Hetao Basin- Evidence from detrital zircon
      In the first,we discuss the formation and evolution of the Yellow River in the Hetao Basin by the tracing method. Gravel counting is conducted in the third terrace of Linhe and the ninth terrace of Kubuqi,which indicates this place receive source from the upper Yellow River. Zircon samples are also collected in thethe third terrace of Linhe,the ninth terrace foundation and Cretaceous bedrock of Kubuqi. The results show that there are three main distribution ranges being 250-310 Ma,1550-2160 Ma and 2340-2700 Ma for the Cretaceous bedrock,while there are two more ones,380-490 Ma and 600-1420 Ma. Compared with age spectra of sediment of the Yellow River from different places and different time,we find that source of Cretaceous bedrock are main from Ordos Basin basement and peripheral orogenic belts,while the Yellow River in the Hetao Basin receive source from the Northeast Tibetan plateau since at least 5.16 Ma,that is,the Yellow River running through the Northeast Tibetan plateau and Hetao Basin has taken shape since then.
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