[水]靜海相的

At the first stage,source beds of microclastic sediments,rich in carbon,sulfur and gold,were de-veloped in a relatively euxinic semirestricted reducing basin. 成礦階段的構(gòu)造熱液事件使金從變質(zhì)細(xì)碎屑巖中淋出、遷移，或與其他來源的金匯集、沉淀構(gòu)成礦床。

Keywords Yutangba;western Hubei;selenium deposits;black shale and bedded chert;enrichment multiple elements;anoxic or euxinic hydrothermal activity; 漁塘壩;湖北西部;硒礦床;硅質(zhì)巖和頁巖;多元素富集;缺氧或靜海環(huán)境;

euxinic deposit 靜海沉積,閉流海沉積

euxinic basin 滯流貧地