北票组 原称“北票煤系”。中侏罗世。最初命名地点在中国辽西北票市,故名。分布于辽西一带。为陆相含煤沉积,按岩性可分下、上两部:下部火山岩系,安山岩质凝灰岩、凝灰质砾岩,厚约360—500米;上部含煤系,砂岩、页岩夹煤层,厚约1000—1500米,含华丽凤尾银杏、威廉逊拟托蕨等化石。本组与下伏元古界呈不整合接触。
北票组烃源岩有机质丰度不高,属差—中等烃源岩;
The organic abundance of Beipiao Formation hydrocarbon source rock is not very high and belongs to poor to middle grading.
通过对该区含煤地层组合特征综合分析,认为其应属下侏罗统北票组含煤岩系。
Through comprehensive analysis of coal-bearing strata combinative characteristics in the area, figured out the strata belong to Lower Jurassic Beipiao Formation coal-bearing rock series.
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