Journal of Palaeogeography

Distribution characteristics of different Huaiyuan unconformities in Ordos Basin

Danfeng MAO, Dengfa HE, Hongping BAO, Liubin WEI, Xiang CHENG, Junyi GOU, Jing SHI, Yanhua XU

J Palaeogeogr, 2024, 26(1): 119-131. DOI: 10.7605/gdlxb.2024.01.004

Fig.1 Present tectonic units of Ordos Basin(a)and the Proterozoic-Lower Paleozoic comprehensive histogram(b)

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Fig.2 Unconformity characteristics of Huaiyuan movement shown by outcrop and drilling in Ordos Basin(location shown in Fig.1)
Fig.3 Features of the top unconformity of Cambrian in three-dimensional seismic sections of Ordos Basin (locations shown in Fig.1)
Fig.4 Types and distribution of unconformity of the top Cambrian in Ordos Basin and adjacent areas
Fig.5 Characteristics of strata on and below the top unconformity of Cambrian System in interior and margin of Ordos Basin (modified from Tian and Zhang,1997;Cai et al., 1997;He et al., 2004;Cao et al., 2011;Li et al., 2021)
Fig.6 Time interval between the upper and lower strata of Huaiyuan movement unconformity in Ordos Basin
Fig.7 Pre-Ordovician geomorphology in Ordos Basin