An investigation has been conducted of the geological and geochemical characteristics of euxenitebearing granitic veins found for the first time in China. It is
The pulsational characteristics of magmatic activity are discussed in terms of potyeyelcs, polyphases and polystagcs for Mesozoic granites from Ⅰ,Ⅱ, Ⅲ areas.
Mechanism and stagcs are discussed and a schematic diagram suggested for petroleum evolution based on a preliminsry review of the characteristics of some oil an