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Acta Geologica Sinica(English Edition) 2006年第4期80卷 490-497页

作者： guo xianpu wang naiwen ding xiaozhong zhao min wang daning Institute of Geology Chinese Academy of Geological Sciences Beijing 100037

The Naij Tai Group-complex is a suite of tectonic-sedimentary méiange aggregation of the Eastern Kunlun orogenic belt, which is composed of two parts, i.e. the exotic blocks of various ages and the matrix strata. On the basis of coral, brachiopod and gastropod fossils found in the exotic blocks, the age of this group-complex was once defined to the Late Ordovician or the Paleozoic. This paper reports for the first time 44 genera and 31 species of Mid-Late Oiigocene sporopoilen in samples from the matrix strata in this group-complex and the Paleogene Quercoidites-Persicarioipollis assemblage is named. The paper aims to provide some detailed evidence for determining the age of the matrix strata in this group-complex based upon a study at the Caiyuanzigou section, which would be of great geological significance for further understanding this group-complex as a suite of tectonic-sedimentary méiange aggregation. The new finding will certainly benefit from now on the investigation of formation and evolution mechanism for the Eastern Kunlun orogenic belt.

关键词： Naij Tai Group-complex Paleogene sporopoilen méiange aggregation Eastern KunlunIt Orogenic Belt

Discovery of Paleogene palynological assemblages from the Wanbaogou Group-complex in western part of the Eastern Kunlun orogenic belt and its geological significance

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Science China Earth Sciences 2006年第4期49卷 358-367页

作者： guo xianpu wang naiwen ding xiaozhong zhao min wang daning Institute of Geology Chinese Academy of Geological Sciences Beijing 100037 China Institute of Geology Chinese Academy of Geological Sciences Beijing 100037 China Institute of Geology Chinese Academy of Geological Sciences Beijing 100037 China Institute of Geology Chinese Academy of Geological Sciences Beijing 100037 China Institute of Geology Chinese Academy of Geological Sciences Beijing 100037 China

Wanbaogou Group-complex is a suit of melange aggregation of the EasternKunlun orogenic belt, which is divided into two parts, i.e. the exotic blocks and the matrix *** on stromatolite fossils yielded in the exotic blocks, the age of this group-complex was oncedefined to the Precambrian. Recently, two Paleogene palynological assemblages have been found insamples from the matrix strata of the Upper Part in this group-complex by the authors: in ascendingorder, the Al-nipollenites-Quercoidites assemblage of Late Eocene and theCaryapollenites-Pinuspollenites assemblage of Early Oligocene. Those results show that the matrixstrata of this melange were mainly formed in Paleogene, and the event causing mixture should be aHimalayan Movement Phase. This paper is designed to provide some detailed evidence for determiningthe age of the matrix strata in this group-complex based upon study at the Kunlunqiao Section, whichwould be of important geological significance for further understanding this group-complex as asuit of melange aggregation and establishing or improving the stratigraphic framework of the studiedregion. The new finding will certainly benefit from now on the investigation on geotectonic andsedimentary evolution of Eastern Kunlun.

关键词： wanbaogou group-complex paleogene palynological assemblages melangeaggregation the eastern Kunlun orogenic belt

东昆仑造山带纳赤台岩群基质地层发现中新世孢粉组合

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地质论评 2007年第6期53卷 824-829,I0011-I0012页

作者：郭宪璞王乃文王大宁丁孝忠赵民中国地质科学院地质研究所北京100037

东昆仑造山带纳赤台岩群是一套混杂堆积地层,有外来岩块和基质地层之分别,以往根据岩块中的化石将该套地层划为下古生代的奥陶系—志留系。根据笔者等的研究和野外调查,2006年首次报道了在菜园子沟剖面该岩群基质地层中发现古近纪中—... 详细信息

东昆仑造山带纳赤台岩群是一套混杂堆积地层,有外来岩块和基质地层之分别,以往根据岩块中的化石将该套地层划为下古生代的奥陶系—志留系。根据笔者等的研究和野外调查,2006年首次报道了在菜园子沟剖面该岩群基质地层中发现古近纪中—晚渐新世的孢粉44属31种。本文报道的是在水泥厂剖面该岩群基质地层中发现的新近纪中—晚中新世的孢粉化石44属33种。新近纪孢粉化石的发现对进一步厘定该岩群的地质时代、分析其古环境及东昆仑造山带的形成演化等方面具有重要的地质意义。

关键词：中新世孢粉化石纳赤台岩群基质地层东昆仑造山带

东昆仑纳赤台岩群混杂堆积的古生物学证据及其地质意义

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地质论评 2006年第3期52卷 289-294,i0001-i0002页

作者：郭宪璞王乃文丁孝忠赵民王大宁中国地质科学院地质研究所北京100037

纳赤台岩群是东昆仑造山带一套构造—沉积混杂堆积地层,由各时期外来岩块和基质系统两大部分组成。以往曾依该岩群岩块中的珊瑚、腕足类、腹足类化石等划分为晚奥陶世或古生代。本文首次报道该岩群基质地层中发现的44属31种古近纪中—... 详细信息

纳赤台岩群是东昆仑造山带一套构造—沉积混杂堆积地层,由各时期外来岩块和基质系统两大部分组成。以往曾依该岩群岩块中的珊瑚、腕足类、腹足类化石等划分为晚奥陶世或古生代。本文首次报道该岩群基质地层中发现的44属31种古近纪中—晚渐新世孢粉化石。这些化石的发现为厘定该岩群的地质时代、进一步确定该岩群为构造—沉积混杂堆积以及阐述东昆仑造山带形成演化机制等方面提供了有力证据,具有重要地质意义,而且在探讨古近纪生物地理区系和古环境等方面提供了重要参考资料。

关键词：古近纪孢粉化石纳赤台岩群混杂堆积东昆仑造山带