... quaternary geochronology 第四纪地质年代学 Quaternary deposit 第四纪层 ; 第四纪后期沉积物 quaternary amines 四级铵 ...
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... 前第四纪 pre-quaternary 第四纪沉积层 quaternary deposit 第四纪沉积物 quaternary deposit; quaternary sediment ...
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post-quaternary deposit 第四纪后期沉积物
original type of Quaternary deposit 第四纪沉积类型
late Quaternary deposit 晚第四纪沉积
quaternary deposit environment 第四纪沉积环境
quaternary illuviated ore deposit 第四纪淋积矿床
quaternary sedimentary ore deposit 第四纪沉积矿床
Quaternary lake deposit 第四纪湖泊沉积
The delta deposit characterizing short basin growth time (it's mainly concentrated onto Quaternary), short lithogenous time and low lithogenous level forms an excellent accumulation condition here.
盆地发育时间短(主要集中在第四纪)、成岩时间短、成岩程度低的三角洲沉积形成了这里优越的聚集条件。
A large U-Mo deposit was found on the northern margin of north China Platform, where the Mesozoic and Cenozoic volcanics are developed. This area is widely covered by the Quaternary sediments.
在华北地台北缘中新生代火山岩发育区,发现大型铀钼矿床,其外围被第四系广泛覆盖。
The basin was filled with thick sediments of Quaternary lake and alluvial facies and accumulated with tin placer which is locally enriched to be commercial deposit.
盆地中充填有第四纪湖相-冲积相厚层沉积,有砂锡聚集,局部富集成矿床。
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