查询词典 carboniferous

They Silurian period of evolution, which appeared in the Carboniferous period there is 70 cm away from the large dragonfly wings.

它们在希留利亚纪时期进化，而到石炭纪时期则出现有七十公分翅距的大型蜻蜓。

It is divided into six main periods: the Cambrian , Ordovician, Silurian, Devonian, Carboniferous ,and Permian.

分为六个主要的时期：寒武纪、奥陶纪、志留纪、泥盆纪、石炭纪和二叠纪。

The main metallogenic elements and associated elements are concentrated in Silurian, Devonian and Carboniferous strata, which are, thus, the most potential horizons for prospecting.

西天山主要成矿元素及其伴生元素集中在志留系、泥盆系和石炭系中，因而它们是研究区内最有潜力的找矿层位。

The Paleozoic tectonic stress field was reconstructed with the vertical stylolite structure found in the Ordovician and Carboniferous limestone. The identification of Paleozoic tectonic stress field showed that North China craton suffered the horizontal compression in the NNE-SSW direction and uplifted at the beginning of the Ordovician.

摘要利用奥陶系和石炭系灰岩地层中的垂直缝合线构造，对济阳坳陷古生代古构造应力场进行的判别结果表明，自奥陶纪开始华北克拉通盆地就受到NNE—SSW向的水平挤压而整体抬升，在遭受长达140Ma的剥蚀作用后，即至晚古生代古构造应力场仍未发生改变。

Formerly a suborder of Stegocephalia; large Carboniferous and Permian amphibians having vertebrae in which some elements remain separate.

在旧的分类中是坚头目的一个亚目；有脊椎的石炭纪和二垩纪两栖动物，其中有些种类是独立的。

Tholeiite has a zircon SHRIMP U-Pb age of 352 Ma, suggesting that the formation of the ophiolites may have continued till the Late Devonian-Early Carboniferous.

拉斑玄武岩 SHRIMP 锆石年龄352 Ma ，说明蛇绿岩的形成可持续到晚泥盆世—早石炭世。

On the basis of a study of Carboniferous coal measures in the northern foothills of the Dabie orogenic belt and by using the microscopic and ultramicroscopic techniques, the structural coal is subdivided into brittle-deformed coal and ductile-deformed coal.

以大别造山带北麓地区石炭纪含煤岩系为研究对象，利用显微及超微分析手段，将构造煤划分为脆性变形和韧性变形两大类。

The oceanic basin was finally been closed to form a new unified continent in the end of Carboniferous, went through two periods of plate tectonic system and two times of main underthrust collision orogeny.

摘 要：甘肃、内蒙古北山地区从寒武纪初期在前震旦纪统一古陆壳的基础上发生裂解，到石炭纪末洋盆最终闭合形成新的统一大陆，先后经历了两期板块构造体制和两次主要的俯冲-碰撞造山作用。

The Late Carboniferous anomaly never completely closed, so unless the team assigned some Special Forces soldiers to guard it, more Arthropleura could potentially come through.

石炭纪后期的时空易界口并没有完全闭合，所以组织必须派特种部队驻守，否则还可能有更多的古马陆穿过易界口。

The Centr al Tethys Region lies in Hoh Xil-Bayan Har. Since Late Palaeozoic, the back-ar c bathyal basin continued to break and spread. The typical oceanic crust was event ually formed in Carboniferous and Permian. The Ocean during that period is named the Paleo-Tethys, of which the remnant is the Third and the Fourth suture zone s.

特提斯中区位于可可西里—巴颜喀喇，古生代晚期以来在弧后盆地基础上继续破裂、扩张，典型的洋壳形成于石炭—二叠纪，这个时期的洋称古特提斯，它的遗迹为第三和第四缝合带。

The split between the two groups can hardly be papered over.

这两个团体间的分歧难以掩饰。

This approach not only encourages a greater number of responses, but minimizes the likelihood of stale groupthink.

这种做法不仅鼓励了更多的反应，而且减少跟风的可能性。