常見例句雙語例句There is a black shale which widespread at Early Cambrian in Guizhou.貴州早寒武世早期普遍存在一套黑色頁巖。The presenting of black shale series reflects abrupt environmental events, which formed many important ore hosting rock series.黑色巖系的形成反映了環(huán)境的突變事件,構(gòu)成了許多重要礦床的賦礦巖系。Black shale is the most favorable lithofacies which has high organic abundance and greatest kerogen type(mainly type I). Laminar mudstone is the second favorable lithofacies.黑色頁巖巖相有機質(zhì)豐度高,有機質(zhì)類型以I型干酪根為主,是最有利的富有機質(zhì)巖相類型,其次為紋層狀泥巖巖相。權(quán)威例句The black shale Marcellus Formation stretches from much of the southern half of New York State through much of Pennsylvania and into West Virginia and Eastern Ohio.FORBES: My Prediction Was Wrong: Why We Didn't Get To $8 Natural GasThe entire city of Fort Worth sits over a gas dense layer of black rock called the Barnett Shale that only recently became possible to access.NPR: Drilling for Gas in Dallas-Fort Worth 返回 black shale