This eventually resulted in the oxygen-rich atmosphere of the Carboniferous period around 340 to 280 million years ago.
这导致在距今2.8到3.4亿年前的石炭纪大气中的氧气几近饱和。
The new research is focused on the Carboniferous Period, when the supercontinent of Pangea was covered in tropical rainforests ruled by reptiles.
在30亿年前的石炭纪时代，大陆被热带雨林覆盖，并由爬行动物所统治。
The Middle Carboniferous period was a main age that the Yilian-habirga crest zone was put together with the Wenquan-Sailimu and the Boluokenu tectonic belts.
中石炭世是准噶尔地块西南缘伊林哈比尔尕波峰带与温泉-赛里木及婆罗科努构造带镶嵌的主要时期。
There are great bifurcations as yet on the structural environment and on the evolution of the Xingmeng Paleozoic orogenic belt in Southeast Inner Mongolia during the Carboniferous Period.
内蒙古东南部古生代造山带在石炭纪时期的构造环境和构造演化，至今在认识上存在较大的分歧。
The Carboniferous period saw the appearance of the first extensive forests on Earth.
石炭纪时期，看到出现的第一广泛的森林在地球上。
According to space distribution of the sedimentary facies, Longhuo ancient platform was an isolated one, surrounded with troughs in the Carboniferous period.
根据沉积相的空间展布，隆或古台地在石炭纪时为一个孤立的碳酸盐台地，周围被海槽围限。
Silurian '. 'and before the Mississippian or Carboniferous Period, and characterized by the appearance of forests and amphibians.
处于志留记之后，密西西比纪或石炭纪之前，森林和两栖类的出现是其特征。
In the Ordovician, Silurian Period, the Devonian, Carboniferous, the advent of low amphibians and ancient ancient reptiles.
在奥陶纪、志留纪、泥盆纪、石炭纪，相继出现低等鱼类、古两栖类和古爬行类动物。
Besides, we also find that there are magma thermal actions during the Carboniferous period and early Permian period.
此外，还发现有早期(石炭纪—二叠纪)岩浆热力作用事件。
The residual basins were deeply buried in Himalayan Period, and the Carboniferous System was piecemeal distributed in the depressed belts of orogenic zone.
喜山期残存盆地深埋，石炭系仅零星残存在造山带的低洼地带。
Much of the petroleum we use today began some 200 million years ago in the Carboniferous Period.
我们今天使用的很多石油都起至200万年前的石炭纪。
The Guibei Mountain developed from the limestone and dolomite in the Carboniferous Period (about 362-290 million years ago). The rock strata grow horizontally with pure texture.
龟背山山体发育在石炭纪(距今约3亿6千2百万年至2亿9千万年)石灰岩和白云岩中。
Through the work of 1/50000 regional geological survey and the research of the sedimentary facies in the area, the author systematically sets up sedimentary sequence of Carboniferous period stratum.
通过在该地区进行1：5万区域地质调查工作及沉积相研究工作，系统地建立了该地区石炭纪地层的沉积序列。
Through the work of 1/50000 regional geological survey and the research of the sedimentary facies in the area, the author systematically sets up sedimentary sequence of Carboniferous period stratum.
通过在该地区进行1：5万区域地质调查工作及沉积相研究工作，系统地建立了该地区石炭纪地层的沉积序列。
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