platform margin

Development pattern of bank and reef of platform margin type and bank and tide flat of intra-platform type belongs to atmospheric fresh water lens. Fresh water and salt water lens form mainly in evaporation tide flat type.

台缘滩、礁型和台内滩、潮坪型同生期岩溶的发育模式基本一致，出现大气淡水透镜体，而蒸发潮坪中发育淡水、盐水双层透镜体。

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Organic reefs in the study region form a patch reef group on the carbonate platform margin ramp and they are interruptedly distributed along the platform margin.

研究区的生物礁为碳酸盐台地边缘缓坡点礁群，沿着台地边缘断续分布。

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The carbonate source rocks of Middle-Upper Ordovician in Tarim basin are widely distributed in different sedimentary environments at the same period such as platform margin slope, platform inner sag, continental shelf, abyssal basin, etc.

塔里木盆地中上奥陶统碳酸盐岩烃源岩在同一时期不同的沉积环境（台缘斜坡、台地内凹陷、陆棚、深海盆地等）中均有发育。

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2) The relatively low energy type carbonate platform margin can be represented by the barrier reef-lime mud bank complex in Bachu outcrop area which have been developed during the deposition of Middle Ordovician Yijian-fang Formation ( Dawangou Formation).

2）相对低能台地边缘型，以巴楚露头区中奥陶统一间房组（大湾沟组）沉积期障积礁、含灰泥滩组合为代表；

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In the first classification, the reef can be divided into fringing reef, platform inner reef, platform margin reef, slope reef and basin reef.

在一级分类中可划分出岸礁、台内礁、台地边缘礁、斜坡礁和盆地礁这5种生物礁类型。

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It can be concluded that clastic facies consisting of tidal facies, lagoon facies, Fluvial facies, alluvial fan facies and fan delta and carbonate facies including evaporation platform, restrict platform, open platform and ford of platform margin.

碎屑岩沉积相包括潮坪相、泻湖相、河流相、冲积扇相以及扇三角洲相：碳酸盐沉积相包括蒸发台地、局限台地、开阔台地和台地边缘浅滩。

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Peri-beach tide flat facies with shallow water body and peri-platform margin siliceous rock basin facies with deeper water body are unfavourable for the living of conodont animals;

水体较浅的近滩潮坪相和水体较深的近台边缘硅质岩盆地相则不适宜牙形石动物生存。

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The reefs consist of sponge bafflestones, which belong to platform margin reefs.

生物礁由海绵障积岩组成, 属于台地边缘礁.

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According to facies, syngenesis solution is firstly divided into bank and reef of platform margin type, bank and tide flat of intra-platform type and evaporation tide flat type.

从沉积相的角度，首次将同生期岩溶区分为台缘滩、礁型，台内滩、潮坪型和蒸发潮坪型进行研究。

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