Title: Restoration of the Sedimentary Boundary of the Yan′an Period of Early-Middle Jurassic,the Northwest of Ordos Basin
Abstract:The restoration of the sedimentary boundary of Ordos Basin in the Yan'an period of Jurassic is a key problem of restoration for its original basin.The sedimentary boundary has not been concluded due t...The restoration of the sedimentary boundary of Ordos Basin in the Yan'an period of Jurassic is a key problem of restoration for its original basin.The sedimentary boundary has not been concluded due to different kind of structural transformation.Aiming at residual sedimentation and current tectonic framework of the northwest of the basin and its adjacent areas,and based on a large amount of field observation,drilling data,and lab assays,it is pointed out that Helanshan and Yinchuan graben located in the eastern side of Helanshan belong to Ordos Basin in the Yan'an period of Early-Middle Jurassic by comparing the remaining strata of Yan'an period in the northwest of Ordos Basin and analysing the border facies,regional tectonic evolution and structural setting.The sedimentary environment in the Yan'an period of Early-Middle Jurassic,the northwest of Ordos Basin is different from the corresponding strata of Langshan region.Based on these multidisciplinary analysis and research,the northwest sedimentary boundary of Ordos Basin in the Yan'an period of Jurassic is along the fault zone in west margin of Helanshan to Zhuozishan.Read More
Publication Year: 2013
Publication Date: 2013-01-01
Language: en
Type: article
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Cited By Count: 1
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