Fig 1.
Location of the Xujiayao-Houjiayao Paleolithic site.
The upper sketch shows the topographic map of Nihewan Basin and the neighboring Yanggao and Yuxian Basins. The lower one shows the positions of the Localities 73113 and 74093 of the site (modified from Wang et al. [29]).
Fig 2.
Stratigraphy of the Xujiayao-Houjiayao Paleolithic site.
(A) Photograph of the cross-section revealed during the excavation in 2012, the lower left inset shows more clearly an unconformity believed to mark the boundary between the third terrace of Liyi River and the underlying Nihewan Formation. (B) Lithostratigraphic column of the cross-section exposed in 2007–2008 (∼1 m shallower than A) with the position of the dating samples and their 26Al/10Be burial dates. (C) Lithostratigraphic column and polarity of the cross-section from where samples for magnetostratigraphic studies were taken (modified from Løvlie et al. [15]), along with the magnetostratigraphic dates [17, 18]. Also given are the U-series dates on fossil teeth [7]. Superscripts on ages indicate the dating methods (B, Burial dating; U, U-series dating on fossils; M, Magnetostratigraphic dating).
Table 1.
Cosmogenic nuclide concentrations and burial ages for Xujiayao-Houjiayao site.