于白云岩夹灰岩之层段发现大量的头足类化石，其时代属早奥陶世。
A lot cephalopoda fossils were found in the section of dolomite with limestone, which belong to early Ordovician.
西汉水群出露于盆地的南部，以板岩、千枚岩及砂岩为主，夹灰岩块和生物礁；
The Xihanshui Group, which distributes in the southern of the basin, is mainly slates, phyllites and sandstones with carbonatite and reef blocks.
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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