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Stratigraphic chronology | Layers | Soil type | Depth (m) | Thickness (m) | Description |
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Q3 | L1 | Loess | 5.2 | 5.2 | The slightly wet brown-yellow loess is hard and plastic and shows uniform quality, developed pores, and visible wormholes and snail shells |
F1 | Paleosoil | 6.4 | 1.2 | The slightly wet bronzing hard paleosoil is hard and plastic and shown as fragments. The soil is loosened and contains medium-developed pores and plenty of calcareous concretions |
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Q2 | L2 | Loess | 10.4 | 4.0 | The slightly wet brown-yellow loess is hard and plastic and shows nonuniform structure, with calcareous concretions, minor snail shells, and developed pores |
F2 | Paleosoil | 13.8 | 3.4 | The hard and plastic paleosoil in brown to maroon color (slightly wet to wet) with nonuniform quality shows few macropores and plenty of calcareous concretions at the middle and lower parts |
L3 | Loess | 19.9 | 6.1 | The slightly wet brown-yellow loess with nonuniform structure is hard and plastic and contains relatively developed pores and a high content of calcareous concretions at the bottom |
F3 | Paleosoil | 21.4 | 1.5 | The slightly wetting bronzing hard and plastic paleosoil with uniform soil quality is dense and shows less developed pores and plenty of calcareous concretions at the lower part |
L4 | Loess | 26.5 | 5.1 | The slightly wet pale yellow loess is hard and plastic and exhibits uniform quality and medium-developed pores |
F4 | Paleosoil | 27.4 | 0.9 | The slightly wet bronzing hard and plastic paleosoil with uniform quality contains less developed macropores and few calcareous concretions at the lower part |
L5 | Loess | 33.3 | 5.9 | The slightly wet tawny loess which has uniform quality and is dense is hard and plastic and hardly shows macropores, with calcareous concretions in local zone |
F5 | Paleosoil | 35.2 | 1.9 | The slightly wet maroon paleosoil with nonuniform quality is hard and plastic and exhibits fragment structure, nondeveloped macropores, and many calcareous concretions |
L6 | Loess | 39.0 | 3.8 | The slightly wet isabellinus loess is hard, plastic, and dense and shows uniform quality and nondeveloped pores |
L7 | Loess | >41.0 | >2.0 | The slightly wet bronzing loess (hard and plastic to hard) presents uniform quality and is dense. It contains minor calcareous concretions |
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