Sheet-type single-storied channel sandstones are also found, the lower portion of the biozone often containing fining upward sequences. Calcium carbonate precipitation crusts and gypsum “desert rose” crystals have been uncovered in the sandstone layers.
Channel sandstones, single-story, sheet-like formations are also found. The lower portion of the biozone often exhibits fining upward sequences. Calcium carbonate crusts and gypsum "desert rose" crystals have been discovered within the sandstone layers.