At 21:45 hr(Beijing time) on Oct.31,1990 the Yanzhuang meteorite hite the ground at the Yanzhuang village,Wenyuan County,Guangdong Province,Several fragments,to
A study on the potential and kinetics of hydrocarborn(HC) generation of 30 source-rock samples from a certain depression has been made by means of ROCK-EVAL tec
Volcanic rocks in seamounts of the South China Sea consist mainly of alkali basalt, tholeiitic basalt, trachyandesitic pumice, dacite, etc.Inclusions in the min
Five species of bacteria have been found in granite-weathering profiles of Ore District 701.They tend to decrease in varieties and quantities from the upper par