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Swiss Journal of Geosciences
Fig. 3 | Swiss Journal of Geosciences

Fig. 3

From: Genesis of host rock in the Tamusu Mudstone pre-selected area in Northwest China for high-level radioactive waste geological disposal purposes

Fig. 3

Sedimentary structures of host rock in Tamusu pre-selected area.  a The network vein filling structures, the marked white network is composed of analcime, clay minerals and dolomite, Borehole TZK-2, 765 m; b dark argillaceous minerals mixed with analcime and powder-fine dolomite, single polarization light; c “matrix-supported” structure, the marked white matrix are powder-fine-grained and coarse-grained dolomite, Borehole TZK-1, 595 m; d rhombic coarse-grained dolomite and powder-fine-grained dolomite are distributed in dark argillaceous minerals, single polarization light; e white and grey-white laminae developed in the dark grey mudstone; f the marked area is composed of dolomite, ankerite and analcime, Borehole TZK-2, 137 m, dyed thin section, single polarization light; g grey massive mudstone, Borehole TZK-1, 520 m; D1: mud-micro dolomite; D2: powder-fine dolomite; D3: coarse-grained dolomite; Ana: analcime; Ank: ankerite

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