... Malm麻姆统 malm泥灰岩；钙质砂土；含白垩粘土 malobservation观察误差 ...
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含白垩粘土
Chalky clay
以上为机器翻译结果，长、整句建议使用 人工翻译 。
藏南定日地区在白垩纪中期发育一套浅灰色深灰色的以钙质页岩、泥灰岩及微晶灰岩为主的浅海陆棚相沉积，岩石中除含较高的粘土矿物及陆源石英矿物颗粒以外，还含有十分丰富的有孔虫化石。
The Middle Cretaceous shallow sea sediments, represented by a series of light dark gray marine clastic and carbonate rocks, were well exposed along the Gongzha Section in Tingri, southern Tibet.
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