siliceous rocks

基本解释

The genesis of siliceous rocks in the Changkeng gold-silver deposit, Guangdong Province;
江武义金（银）-萤石矿床，属燕山晚—末期成矿作用的产物。
Gold mineralization of the zone is confined only to the Cambrian carbonaceous shale overlain by siliceous rocks, and apparently controlled by a premineral tough shear zone.
该“潜伏”脉带的金矿化限于寒武系以硅质岩为顶板的碳质页岩中，明显受成矿前产生的韧性剪切带控制。
The siliceous rocks of the lower Mantou formation were resulted from the biochemical action during the sedimentary period and formed in the environment of low-tide shallow sea.
结果表明，镘头组下部的硅质层是同生期生物化学作用成因的，形成于潮下低能浅水环境；