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- Keywords bitumen;ancient oil pools;Pingliang formation shale;Ordovician;weathering crust;central uplift belt;Ordos basin; 沥青;古油藏;平凉页岩;奥陶系;风化壳;中央隆起带;鄂尔多斯盆地;
- Pingliang formation shale 平凉页岩
- In Sangonghe Formation shale, Cainan oilfield,amorphous mass can reach as high as 93. 88%, or microsome accounts for 83. 95%,which oil formed at R_o<0. 73%. 彩南油田三工河组泥岩无定形体可达93．88%25或微粒体含量为83．95%25，在R_o＜0．73%25时已经生油。
- Based on the geotectonic background of the southern margin of the North China platform of Middle Ordovician, the sedimentary environments and sedimentary patterns of Pingliang Formation are analyzed. 从中奥陶世华北地台南缘大地构造背景出发，分析了鄂尔多斯盆地南缘中奥陶统平凉组的沉积环境和沉积模式。
- But the geological and geochemical analyses showed that there existed a set of high quality marine source rock in the platform slope facies of Middle Ordovician Pingliang Formation. 地质和地球化学分析证实，盆地西、南缘台缘深水斜坡相的中奥陶统平凉组存在优质海相烃源岩，其形成的油气最早富集在中央古隆起及其周围；
- Previous research considered that local intervals of Pingliang Formation were rich in mud and could act as Lower Paleozoic hydrocarbon source rocks, but they were not exploration targets. 以往研究认为平凉组局部层段富含泥质，可作为下古生界烃源岩，但非勘探目的层。
- The book has been styled in a modern format. 该书已按照现代版式制作。
- Her front teeth were irregular in formation. 她的门牙排列不整齐。
- They marched in parade formation. 他们以列队的阵式行进。
- The book is written in an episodic format. 这本书是以一种松散的形式写成的。
- It's the same book, but a new format. 还是那本书，但这是新的版式。
- Pingliang yam is "Pingliang Sambo" one. 平凉山药是“平凉三宝”之一。
- Pingliang City in the northern suburbs. 在平凉市城区北郊。
- The formation of two ordered files from one regular file. 把一个正规文件分成两个有序文件的过程。
- The natural process of bone formation. 成骨骨头形成的自然过程
- The formation and development of bodily tissues. 组织发生身体组织的形式的发育
- Formation of a placenta in the uterus. 胎盘形成胎盘在子宫中的形成过程
- The oil shale mainly occurs in the Eocene-Oligocene Youganwo Formation. 油页岩主要赋存于始新-渐新统油柑窝组。
- Pingliang Formation 平凉组
- The forcing of molten rock into an earlier formation. 侵入熔岩对早先形成岩石的直接进入
