Cretaceous sandstone and Eogene mudstone are the main reservoir and caprock.
油气从油气田东部注入,由东向西运移并差异聚集,依次形成凝析气藏、带油环凝析气藏和挥发性油藏.
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只是热带地区才有大批晚白垩纪生物类群正值其演化的极盛时期突然消亡.
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So the researchers resorted to some techniques out of a Cretaceous CSI.
所以科学家只能借助于《犯罪现场调查:白垩纪篇》用到的技术.
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They expected to find evidence of well-known Late Cretaceous vegetation such as conifers and cycads.
他们原本期望发现晚白垩世时期著名植物如针叶树和苏铁存在的证据.
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The Cretaceous extinction was like a terrible streak of bad luck lasting millions of years.
白垩纪的生物绝灭,犹如一场持续千百万年的可怕厄运.
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摘要以不同的研究尺度, 白垩系地下水盆地可以划分为若干地下水流系统.
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四方台组—明水组为白垩系上统, 相当于赛诺—梅斯特利克蒂阶(Senonian—Maestrichtian).
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Mineral, palaeontology, middle devonian, permian to early jurassic, and cretaceous.
收藏矿物 、 古生物学 、 中泥盆纪 、 二叠纪到早期的侏罗纪和白恶纪.
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ABSTRACT Non-marine dinoflagellate fossil of middle cretaceous is very rare in the world.
中白垩世 非 海相沟鞭藻化石在世界上极为罕见.
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其中,侏罗系储集砂体的孔渗条件较差,白垩系砂体的孔渗条件较好.
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Deinonychus lived 110 to 100 million years ago. That time was called the Cretaceous period.
恐爪龙生活在1亿~1亿1000万年前, 这个时候叫做白垩纪.
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白垩纪尚无壳斗科可靠的大化石记录,微化石需要进一步研究才能确定亲缘关系以及古新世壳斗科已经分化出两个类群.
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From the Cretaceous, Tarim basin began the new evolutional stage of foreland basin.
白垩初期始, 塔里木盆期陆盆演阶段.
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The unconformity between the Eocene and the Lower Cretaceous is common in Jiuquan basin.
酒泉盆地普遍发育了始新统与下白垩统之间的不整合.
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Hesperornis is an extinct genus of flightless aquatic birds that lived during the Late Cretaceous.
黄昏鸟是一种已经灭绝的不会飞翔的水鸟,生活在白垩纪晚期.
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The Cretaceous period ended 65 m years ago with the obliteration of the dinosaurs.
6500万年前白垩纪的结束伴随着恐龙的灭绝.
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The prehistoric reptile lived in the Cretaceous period, about 125 million years ago.
这只史前爬行动物生活在约一亿两千五百万年前的白垩纪.
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