...海岸相；燕山地区 [gap=1666]ate platform facies; reef facies; neritic shelf facies; no-barrier coast facies; Yanshan Area ...
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The Yanshan area is the most developed region of the Meso- and Neoproterozoic stratum in north China, the whole area has continuous outcrops, complete stratum and steady deposition.
燕山地区是中国北方中—上元古界地层最为发育的地区,整个地区露头连续、地层齐全、沉积稳定。
参考来源 - 东燕山地区中元古界南口群层序地层格架研究·2,447,543篇论文数据，部分数据来源于NoteExpress
A large amount of burrow fossils are found in pelitic siltstone in the middle Changzhougou Formation of the Mesoproterozoic in the Yanshan area.
在燕山地区中元古代常州沟组中发育有大量的潜穴化石，潜穴产于常州沟组中部的泥质粉砂岩中。
The Yanshan area is the most developed region of the Meso - and Neoproterozoic stratum in north China, the whole area has continuous outcrops, complete stratum and steady deposition.
燕山地区是中国北方中—上元古界地层最为发育的地区，整个地区露头连续、地层齐全、沉积稳定。
A close research has been carried out on the intrusion age, occurrence and genetic type of granitoid rocks in east section of Yanshan area. Three metallogenic series have been pointed out.
详细研究了燕山东段地区花岗岩类的侵入时代、产出形式和成因类型，指出该区与花岗岩有关的三个金属成矿系列。
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