Preliminary study on relationship between volcaniclastic turbidites and gold deposits of the Xiajiang Group of Neoproterozoic Qingbaikouan in southeastern Guizhou Province;

Sedimentary sequence and stratigraphic framework of the Neoproterozoic Qingbaikou system in the Yanshan region,North China;

A great number of acritarchs, including 47 genera and 148 species, are obtained by using standard palynological preparation technique from the Qingbaikou System (800—900 Ma ) in the Yanshan region, North China.

Discovery of Oncolites in the Qingshankou Formation of Cretaceous,Songliao Basin and Its Environmental Significance;

for the Dengjia and Puling Formations of the Qingbaikou Period that the Lishe and Xiancun sections disclose in south Anhui.

During a 1∶50000 regional geological survey in the Xujiabu region,916 Geological Party has made a detailed study on the strata of Qingbaikou Period which were discovered in recent years near Majianqiao in Duchang County,North Jiangxi.

of the Qingbaikou period.

This paper suggests some improvements to the lecture experiment of the reaction between iron wire and copper sulfate solution in junior middle school text book, presents some methods for preparing the "copper tree" experiment and discusses some controversial issues related to Cu (OH)2·CuCO3 and CuSO4·5H2O.