Sandstones are, as a rule , interbedded with shales.
砂岩通常都与页岩互层.
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Oil - yielding organic matter is contained in the shales.
在这些页岩里有产油的有机物质.
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Alternating sandstones and shales are regarded as important.
蚀变的砂岩和页岩是很重要的.
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Thus clays and shales tend to be impermeable.
因此粘土和页岩就往往不透水.
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Uranium is frequently enriched by sorption or chemical combination in shales, lignites and phosphorites.
铀经常为页岩, 泥炭和磷块岩所吸附或化学结合态而富集.
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These cyclic sequences are overlain by the lagoon dolomitic mudstones and shales.
米级旋回层序之顶覆以厚度不等的?
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Not since shales escape, right? - Yeah. What's going on, Richard?
自从席尔斯越狱后, 对 吧 ? - 有问题吗, 理查?
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Oil - yielding organic matter is contained in shales.
在这些页岩里有产油“的”有机“物质”.
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The genetic types of shales in the area under research are of humus and mixed type.
研究区油页岩成因类型为混合型和腐殖型.
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The variety of these mudstone and shales is very complex in lacustrinehigh - frequency cycle.
这些泥岩和页岩在湖相高频旋回中的变化相当复杂.
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The ichthyosaur remains are found in black, bituminous marine shales deposited about 190 million years ago.
人们在黑色的 、 含沥青的海洋页岩中发现了约1.9亿年前沉积下来的鱼龙化石.
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