B. sandstone with hummocky or sunken cross bedding and parallel bedding;
具丘状、洼状交错层理或平行层理的砂岩；
Depositional beddings such as graded bedding, massive bedding, parallel bedding, cross-bedding and wave bedding, are well developed;
粒序层理、块状层理、平行层理、交错层理、波状层理十分发育；
Depositional beddings such as graded bedding, massive bedding, parallel bedding, cross-bedding and wave bedding, are well developed;
粒序层理、块状层理、平行层理、交错层理、波状层理十分发育；
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