Yunlai, Bai Yuhua, Ma Geology of the Chang 7 Member oil shale of the Yanchang Formation of the Ordos Basin in central North China Oil shale geochemical composition, proximate and organic matter analyses from the Chang 7 Member oil shale, Ordos Basin, central north China. Chang 7 Member oil shale;Ordos Basin;North China Oil shale geochemical composition;Geology 2019-02-22
    https://geolsoc.figshare.com/articles/journal_contribution/Geology_of_the_Chang_7_Member_oil_shale_of_the_Yanchang_Formation_of_the_Ordos_Basin_in_central_North_China/7757213
10.6084/m9.figshare.7757213.v1