硅质岩沉积大地构造地球化学表明硅质岩的沉积环境是大陆边缘的浅海。
In the light of the sedimentary tectono-geochemistry of they formed in shallow sea of continental margin.
热水沉积硅质岩对于矿床研究具有重要意义。
Hydrothermal sedimentary silicalite studies are important for ore deposits.
形成混合沉积的条件是具备碳酸盐和硅质碎屑两类物源、活跃的水动力和干湿交替的气候，此外，海平面的相对波动也会造成积极的影响。
Occurrence of both carbonate and siliciclastic sources, active hydrodynamic regimes, alternate dry and wet climates, and the fluctuation of sea level are main factors for forming mixed sediments.
喷流-热水沉积硅质岩对于矿床研究具有重要意义。
Sedimentation - exhalation siliceous rocks are of great significance in the study of ore deposits.
硅质岩中含有大量放射虫，放射虫组合显示硅质岩的沉积时代为晚侏罗世晚期。
There exists abundant radiolaria in the chert, and the radiolarian association suggests that the chert was formed in the last period of Late Jurassic.
庙河型生物群的产出位于晚期开阔台地向深水陆棚-次深海过渡相区中的黑色页岩、硅质页岩中，其沉积环境为最大浪基面以下的宁静、贫氧环境，其沉积方式为悬浮沉积。
The Miaohe-type biotas occur in the black shale and siliceous shale in the transitional areas from the late open platform facies to deep-water shelf-bathyal facies.
东部沉积微相条件变差，孔洞被亮晶方解石、渗流白云石、硅质等强充填，但以亮晶方解石充填为主。
Microfacies become variation in eastern, pore space are filled by calcsparite, leakdolomite, kiesel and so on. But the main filling is calcsparite.
在湘东北文家市首次识别出蛇绿岩套残片 ，它由变沉积岩、变玄武岩、变辉绿岩、变辉长岩、变辉石岩类及变硅质岩组成。
This is the first report on the ophiolite suite, which consists of metasediment, meta-basalt, metadiabase, metagabbro, metapyroxene and metasilicith, in the Wenjiashi area, northeastern Hunan.
研究结果表明，与矿化煤层互层的硅质岩为热水沉积成因，矿化煤层中的锗主要来自形成硅质岩的热水溶液，而这种热水溶液中的锗则主要由盆地基底的富锗花岗岩所提供。
The results show that the siliceous rocks intercalated with the coal seams were deposited from a hydrothermal medium through which germanium was enriched in the coal beds. The primary source...
硅质岩的沉积地球化学研究表明，与岛弧火山岩共生的硅质岩为生物成因，形成于大陆边缘盆地的构造背景。
The geochemistry of the cherts reflects that the cherts coexisting with island-arc volcanic rocks all formed the background of continental margin basin.
但硅质岩稀土元素特征反映其受陆源影响不明显，为远离陆源的深水盆地沉积。
The rare earth elements reflect that these cherts formed in the deep-water basin far from continent where terrestrial material had no obvious effect to them.
但硅质岩稀土元素特征反映其受陆源影响不明显，为远离陆源的深水盆地沉积。
The rare earth elements reflect that these cherts formed in the deep-water basin far from continent where terrestrial material had no obvious effect to them.
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