钙质或碳酸钙越近现代，所构成凝灰岩地层的沉积物越靠近底部，颜色也比较浅。

The more recent calcareous, or calcium carbonate, deposits that make up the tufa formations are closer to the bottom and lighter in color.

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西昆仑赛力亚克混杂堆积由形态、颜色和大小各异的沉积岩块体以及黑色泥质粉砂岩夹灰紫绿色钙质页岩、泥灰岩和层凝灰岩的基质组成。

The Saliyak melange consists of dark-gray to black muddy and silty microclastic rock with intercalation of grayish purple and grayish green calcareous and muddy shale, marl and tuff.

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