查尔斯·莱尔根据化石记录对第三纪作出了很好的估计,但他的方法不能扩展到更早的地质时期。
Charles Lyell made a good estimate of the Tertiary Period from the fossil record, but his method could not be extended to earlier geological periods.
海洋沉积物中浮游生物的这种变化标志着白垩纪和第三纪的分界线。
This change in plankton found in marine deposits is what marks the boundary between the Cretaceous and the Tertiary.
闯入地球的小行星一般被认为是白垩-第三纪灭绝,即恐龙遭受大灭绝的主要原因之一。 那次毁灭性事件灭绝了地球上超过一半的物种,为哺乳动物成为地球上的首要物种扫清了道路。
The extinction was caused by a massive asteroid slamming into Earth at Chicxulub in Mexico.
他说:“化石记录一再证实现代胎盘类哺乳动物的起源是在白垩纪-早第三纪分界点的时候或那之后。
“The fossil record continues to show that the origin of modern placental mammals postdates or is at the Cretaceous-Paleogene boundary, ” he said.
它说明了虱子的历史非常久,在白垩纪-早第三纪过渡期之前,而且也肯定是寄生在某种生物上的。
It says lice are old, predate the Cretaceous-Paleogene boundary, and must have been living on something.
这三个小时的参观是一次时间漫游,沿精心设计的自然路径以此经过大量的可以追溯到大约4千万年前的第三纪的暴露的化石。
The three-hour guided visits are a walk through time, along a well-designed nature trail past a wealth of exposed fossils dating as far back as the Tertiary, some 40 million years ago.
这个有着6550万年历史的地层分离了白垩纪的化石和第三纪的化石。
This 65.5-million-year-old layer of Earth separates fossils of the Cretaceous period from those of the Tertiary period.
目的分析柴达木盆地第三纪盐湖的沉积环境。
Aim To analyze Tertiary period sedimentary environment of Qaidamu saline lake.
从渤海湾盆地的中、新生代构造演化分析,渤海湾盆地是一个新生代早第三纪始新世形成的走滑拉分盆地。
According to the analysis of Mesozoic and Cenozoic tectonic evolution, Bohai Bay basin is a strike slip pull apart basin formed in the Cenozoic Eocene epoch.
新生代裂陷盆地旋回又划分为早期裂陷、强烈裂陷、晚期裂陷和晚第三纪整体坳陷4个阶段。
The latter can be subdivided into 4 stages, including initial rifting, intense rifting, late rifting and Late Tertiary integral downwarping.
巨大的堆型矿体受第三纪倾陡断层控制。
Large stack deposits are controlled by deeply dipping faults Tertiary age.
白垩纪至第三纪,随上覆地层增厚,断层封闭性增强。
From the Cretaceous to Tertiary, fault sealing built up with thickening of the overlying strata.
新生代是由第三纪和第四纪组成的。
The Cenozoic era is composed of tertiary period followed by quaternary period.
地堑中5000多米厚的早第三纪陆相沉积物具有良好的生储油条件。
The Eogene continental deposits 5000m and more thick in the Yishu Graben are believed to be the excellent source beds and reservoir rocks.
北黄海及周围地区的北东东向和北北西向断裂,在第三纪末改变了一次动力学性质,是起因于太平洋板块运动方向的变更。
The late Tertiary dynamic property change of NEE and NNW trending faults developed in North Yellow Sea and its surrounding region is caused by the motion direction change of the Pacific plate.
黄县盆地早第三纪黄县组的沉积环境,存在两种不同的认识,一种认为属内陆淡水湖泊沉积,另一种认为是滨海泻湖沉积。
The understandings for sedimentary environment of Paleogene Huangxian Formation in Huangxian basin are different, or suggesting it as inland fresh water lacus, or considering it as coastal lagoon.
济阳坳陷第三纪辉绿岩油藏的发现表明在含油气盆地中,侵入岩能形成有经济价值的油气聚集。
The discovery of Tertiary diabase reservoir in Jiyang Depression shows that the intrusion rock could form oil-gas accumulation with economic value in petroleum basins.
东营凹陷是一个含油气十分丰富的第三纪裂谷盆地。
The Dongying Depression is a Tertiary rift basin with rich petroleum resources.
渤海湾盆地经历了断陷和拗陷两个发育阶段,其间接受了巨厚的第三纪沉积。
Basin development in Bobal Bay comprises two periods, i. e. rifting and depression, during which very thick Tertiary sequences deposited.
与第三纪时期准平原化相伴的红土化、类红土化作用,使基岩中的微量金富集到具有经济价值的程度。
The lateritization and other similar agents accompanied by Tertiary peneplanation enrich the trace amount of gold in basement rocks to a commercially significant extent.
晚侏罗纪—早白垩世为拉张断陷盆地,第三纪以来为挤压坳陷盆地。
It was rift basin in Late Jurassic Early Creaceous and squeezed sag basin since Cenozoic.
乔治王岛第三纪火山岩含大量斜长石斑晶。
King George Island consists mainly of Tertiary volcanics which contain plentiful plagioclases.
镁铝榴石形成于滇东南晚第三纪岩简状的玄武质次火山角砾岩中,角砾岩成分复杂,其中包含有镁铝榴石和铬透辉石等可作宝石材料利用的角砾和晶屑。
The rubbles and crpetals of prrope and chrome-diopsidewhich can be used as gem materials are found in the breccias whose component is very complex.
第三纪红色碎屑岩层在青海分布广泛。
The red clastic strata of Tertiary period is extensively distributed in Qinghai.
早、中侏罗世—早白垩世为拉张盆地,第三纪以来为挤压坳陷盆地。
It was rift basin from Early Middle Jurassic to Early Creaceous and squeezed sag basin since Cenozoic.
火成岩活动主要集中在晚第三纪和第四纪。
The activity of igneous rocks mainly concentrates in Neogene and Quaternary.
陇川盆地新第三纪地层主要由细粒碎屑岩组成,富含孢粉化石。
The Neogene strata in Longchuan basin consist mainly of the fine grained clastic rocks containing abundant sporopollen fossils.
穿越赤道区的季风和信风的环流格局,致使新第三纪和第四纪中国与澳大利亚的气候系统的相关性更强。
In the Late Tertiary and Quaternary the climate systems of China and Australia have become increasingly linked due to the monsoon and trade wind circulation patterns across the equatorial region.
穿越赤道区的季风和信风的环流格局,致使新第三纪和第四纪中国与澳大利亚的气候系统的相关性更强。
In the Late Tertiary and Quaternary the climate systems of China and Australia have become increasingly linked due to the monsoon and trade wind circulation patterns across the equatorial region.
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