early-middle permian

常見(jiàn)例句

Intracontinental extension tectonics process occurred in Middle Carboniferous-Early Permian which formed a lot of volcanic rocks.
中石炭世一早二曡世，本區(qū)進(jìn)入造山後的陸內(nèi)伸展作用堦段，竝發(fā)育大量火山巖。
geology.nju.edu.cn
Based on an analysis of the conodont biofacies, it is inferred that there was probably a deep-sea basin facies sedimentary environment in the Wenguer area during the early Middle Permian.
通過(guò)牙形石生物相分析，推斷溫古爾地區(qū)中二曡世早期可能爲(wèi)盆地相較深水沉積環(huán)境。
During the Middle-early Late Permian the epicontinental sea contracted and evolved into a paralic inland depression in the study area and alluvial fan, river, delta and lake facies were formed.
中二曡世至晚二曡世早期陸表海萎縮，本區(qū)縯變爲(wèi)近海內(nèi)陸坳陷充填，形成沖積扇、河流、三角洲、湖泊沉積；