sedimentary petrology

Prof. Wu Chongyun& the founder of teaching of sedimentary petrology in China University of Petroleum

吴崇筠教授&中国石油大学沉积岩石学教学及教材建设的奠基者

The nature of mineralogy, petrology and geochemistry also provides reliable information to prove that primitive tuffaceous sedimentary rock underwent "soaking effect" in a kind of brine and formed scapolite biotite rock.

矿物学、岩石学及地球化学特征也为其原凝灰质沉积岩经过热卤水浸泡效应（soaking effect）形成方柱黑云岩类的成因提供了可靠信息。

The petrology reveals that the sedimentary environment of the study area is carbonate tide flat and shallow sea which is also strongly affected by the volcanic materials and wind brought clastics during the period of Yangzhuang.

上述岩石特征表明，研究区在中元古代蓟县纪早期的杨庄期为浅海潮坪碳酸盐沉积环境，沉积作用受中远源火山物质和风携碎屑的强烈影响。

Petrology and sedimentary environment of middle Silurian in southern region of West Qinling

西秦岭南带中志留统的岩石学特征与沉积环境