This was the result from the large-scale regression in the Late Ordovician.
这是晚奥陶世晚期大规模海退的结果。
This is the first time in the study and mapping of the Middle and Late Ordovician in South China.
这种定量的岩相古地理图在我国南方中及晚奥陶世还是首次出现。
The drowning of the carbonate platform is one of the most spectacular geological processes in the Late Ordovician on Yangtze block.
碳酸盐岩台地广泛发育及其淹没事件是扬子地区晚奥陶世地层的重要特征之一。
On the basis of fossils yielded from the exotic blocks, the age of this group-complex was defined to the Late Ordovician or the Paleozoic.
以往曾依该岩群岩块中的珊瑚、腕足类、腹足类化石等划分为晚奥陶世或古生代。
The study of reservoir bitumen showed that the source is not only the carbonate in middle and late ordovician, but also the carbonate in Cambrian.
储层沥青研究表明烃源岩不仅仅只有中上奥陶系烃源岩，还有寒武系烃源岩。
This paper deals with the feature of bio-precursors of hydrocarbon in Lianglitake Formation, Late Ordovician of north-slope of Central Uplift of Tarim Basin.
本文描述塔里木盆地晚奥陶世塔中北斜坡带良里塔格组的生烃生物组合特征。
Straddling the late Ordovician period and the early Silurian period, the Andean-Saharan ice age was marked by a mass extinction, the second most severe in Earth's history.
Andean - Saharan冰河期横跨了Ordovician冰河期的后期和Silurian冰河期的前期，大灭绝成为了其标志性事件，那是地球历史上第二个气候最恶劣的时期。
This discovery changed the sole knowledge of structural feature in Tazhong area and aroused new knowledge of Middle-Late Ordovician structural anticlines background in Tarim basin.
这一发现改变了对塔中地区构造特征的单一认识，启发了对塔里木盆地中晚奥陶世构造背景的新认识。
Organic reef formation and development rely on very unique environment, but original sedimentary environment in middle to late Ordovician in Tarim was destroyed completely due to structure eroded.
生物礁生存和发育有着严格的生存环境，但由于构造剥蚀作用，造成塔里木盆地中晚奥陶世原始沉积环境破坏殆尽。
The Central Paleouplift described by Ordovician top surface was merely present during late Cambrian to last stage of Shihezi.
以奥陶系顶面所刻画的中央古隆起显示：中央古隆起仅在晚寒武世-石盒子期末有所显示。
From the suture line towards the north, an andesite line along Sharburti Mountain was the volcanic island arc developed from middle Ordovician to middle-late Silurian.
由缝合线向北，沙尔布尔提山安山岩线是中奥陶世至中、晚志留世发育起来的火山岛弧。
The material source of the Carboniferous karst type bauxite in North China mainly came from the underlying Late cambrian-middle Ordovician carbonate rock.
华北石炭纪岩溶型铝土矿的主要物质来源为下伏的晚寒武世—中奥陶世碳酸盐岩。
The material source of the Carboniferous karst type bauxite in North China mainly came from the underlying Late cambrian-middle Ordovician carbonate rock.
华北石炭纪岩溶型铝土矿的主要物质来源为下伏的晚寒武世—中奥陶世碳酸盐岩。
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