siliceous rocks

基本解釋

The genesis of siliceous rocks in the Changkeng gold-silver deposit, Guangdong Province;
江武義金（銀）-螢石礦床，屬燕山晚—末期成礦作用的產(chǎn)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.
該“潛伏”脈帶的金礦化限于寒武系以硅質(zhì)巖為頂板的碳質(zhì)頁巖中，明顯受成礦前產(chǎn)生的韌性剪切帶控制。
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.
結(jié)果表明，鏝頭組下部的硅質(zhì)層是同生期生物化學(xué)作用成因的，形成于潮下低能淺水環(huán)境；