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石炭纪

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The foreland thrust belt in northwestern margin of Junggar basin is a large-scale imbricated thrust system developed since Late Carboniferous.

准噶尔盆地西北缘前陆冲断带是自石炭纪晚期发育起来的大型叠瓦冲断系统,哈拉阿拉特山冲断带为其冲断前锋构造带的东段。

The extinct trees of the genus Lepidodendron were once distributed widely and contributed largely to the coal seams of the Carboniferous.

已灭绝的鳞木属植物曾经分布广泛,它是石炭纪煤层的重要组成部分。

Based on the formation and separation of pan continent,the origin time of ancient species of Paeoniaceae might be back to the carboniferous of Paleozoic,and was not later than early Mesozoic.The modern species of the family flourished in Jurassic and early Cretaceous.

起源时间可以追溯到古生代的石炭纪,由于泛大陆形成与分离而形成芍药科的芍药组与北美芍药组遥相对应呈间断分布格局。

Various log and core data are used to estimate the petrophysical parameters such as porosity and permeability, and to define the distribution and petrophysical properties of the framework sandbodies in each formations of the PermoCarboniferous in the Bohai Bay basin.

应用录井、测井及岩心资料,测定了孔隙度、渗透率等物性参数,查明了渤海湾盆地石炭-二叠系各地层组的骨架砂岩展布特征及其物性特征;应用相比法编图对渤海湾盆地石炭纪、二叠纪岩相古地理进行了恢复,研究了沉积相对储层及其物性特征的控制作用。

On the basis of 1:250000 regional geological survey, the authors made a lithostratigraphic study and redivision of the Carboniferous-Permian strata in the Xi Ujimqin Qi-Linxi area, southeastern Inner Mongolia, and used the biostratigraphic, sequence stratigraphic and unconformity approaches to make multiple stratigraphic division and correlation.

通过1:25万区域地质调查,对西乌珠穆沁旗—林西地区石炭纪—二叠纪地层进行了岩石地层学研究与重新归并划分,并进行了生物地层,层序地层及不整合面地层的多重地层划分与对比。

The plant body resembled a fern and did not produce flowers, the seeds developing from megasporangia borne on the margins of the fronds.

石炭纪该种植物生长繁茂,到白垩纪基本灭绝,目前仅保留有化石植物。

From the development of the Carboniferous reefs, the metazoan framework reefs and the reefs dominated by microbes and calcareous algae may be two parallelling evolution reef ecosystems. The development of the metazoan framework reefs after the extinction event reflects an obvious evolutionary lag time. The recovery of the reef-building communities dominated by microbes and calcareous algae became faster after the extinction event.

石炭纪整个生物礁的发展情况来看,后生动物骨架礁与以微生物和钙藻为主导的生物礁或许是两个平行发展的礁系统,后生动物骨架礁的发展在大规模生物灭绝事件之后有明显的演化滞后现象,以钙藻和微生物为主导的造礁群落的复苏在生物灭绝事件之后更为迅速。

Based on geological environment, bi-model volcanic series, sedimentary formation and geochemical features of volcanic rocks, it is held that the deposits were most probably formed in the Carboniferous back arc rifted environment.

根据矿床产出地质环境、双峰式火山岩系、沈积建造以及火山岩地球化学特征,推断昆仑式火山岩型块状硫化物铜矿床最可能形成于泥盆纪-石炭纪弧后拉张构造环境。

Mandula area is situated in junction belt between Siberia and North China plates in Damaoqi, Inner Mongolia 1∶50000 regional investigation can recognize many traces of plate action recently years Such as tectonic melange belts, ocean crust remant fragments, island are volcanic and are-rear basin sedimont act They recorded a whole precess or plate action the area from extension, convergence to collision act from Carboniferous to Permian period This result has offered rich, reliable of geological info...

内蒙古达茂旗满都拉地区位于西伯利亚板块和华北板块的接合带。近年来的1∶ 5万区调识别出本区存在着诸多板块活动遗迹,如构造混杂带、洋壳残片、岛弧火山岩、弧后盆地沉积等,记录了在石炭纪至二叠纪这段地质时期内本区从拉张、收敛到碰撞等板块活动的全过程。这一成果,为研究内蒙古北部地槽区的板块活动历史提供了丰富而可靠的地质资料

Part of every crop is saved for seed .

石炭纪的一种化石种子蕨。

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

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