华北燕山裂陷槽中元古代的深水沉积

ABYSMAL AND SUB-ABYSMAL DEPOSIT OF MESOPROTEROZOIC IN YANSHAN AULOCOGEN, NORTH CHINA

对燕山沉降带中元古代的沉积相,有关学者大多定位于以滨海-浅海相为主体。根据在冀北地区的研究,于中元古代团山子组、高于庄组、杨庄组、雾迷山组、洪水庄组和铁岭组中发现大量深水沉积,主要有硅质页岩、含锰页岩、深水浊积岩及各种碳酸盐岩溶解相的系列沉积等。这对于深入研究燕山裂陷槽发展演化具有重要意义。

The sedimentary facies of Mesoproterozoic in Yanshan aulocogen is regarded as coastal to shallow sea region for a long time. Based on survey in north Hebei province, a lots of abysmal and subabysmal deposit of Mesoproterozoic in Yanshan aulocogen, such as siliceous shale, Mnbearing shale, turbidite, solving nodular limestone deposited under calcium carbonate compensation depth and so on, are founded in Tuanshanzi Formation, Gaoyuzhuang Formation, Yangzhuang Formation, Wumishan Formation, Hongshuizhuang Formation, and Tieling Formation. It is important for understanding of the evolution of Yanshan aulocogen.