Two about 1m thick layers of K-rich trachyandesite were found in the Tuanshanzi Formation of the Changcheng System in Pinggu County adjacent to the typical Mid-Upper Proterozoic profile of Jixian County.
蓟县中－上元古界典型剖面之邻区平谷县境内，长城系团山子组连续发育两层厚度各为１ｍ左右的富钾粗面安山岩，发育气孔构造和绳状构造。
Effective reservoir recognition of paleogene trachyte in the middle part of the east sag of Liaohe Depression;
辽河坳陷东部凹陷中段古近系粗面岩有效储集层的识别
Mud logging evaluation method for trachyte reservoir;
粗面岩储集层录井评价方法
Seismic prediction of trachyte reservoir in third member of Shahejie Formation in Huangshatuo Oilfield of Liaohe Depression;
辽河坳陷黄沙坨油田沙三段粗面岩储层地震预测
The Oulituozi and the Huangshatuo trachyte porphyry intrusions, that are separated less than 10 km apart, occur in the middle segment of the Eastern depression of the Liaohe basin and intrude in the Eocene carbonaceous and argillic hydrocarbon source beds of the third member of the Shahejie formation.
地球化学分析表明,两岩体均为粗面斑岩,成分非常一致,很可能在深部相连或来源于同一岩浆房。