该凹陷沉积的碎屑岩具有矿物成分成熟度低和结构成熟度低的特征，所以其埋藏成岩作用十分强烈。
The clastic rocks in this depression are characterized by low maturation of the mineral composition, and low maturation in structure, thus diagenesis due to burial is very strong.
碎屑沉积物衍生自陆地物质，大部分以铝硅酸盐矿物形式存在，由河流和风的作用而沉积于海洋。
It derives from land materials, mostly in the form of aluminosilicate minerals, and is deposited in the ocean by rivers and wind.
这些冰河沉积物下方的较老岩层，是沥青铀矿与黄铁矿碎屑；这两种矿物被认定为大气中氧气极为稀少的证据。
In the older rocks below these glacial deposits are detrital uraninite and pyrite two minerals considered evidence for very low levels of atmospheric oxygen.
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