THE LITHOCHEMISTRY FEATURE OF VOLCANIC ROCK IN XUJIAWEIZI FAULT-DEPRESSION, SONGLIAO BASIN
GUO Jun 1,CHEN Shou_tian 2, WANG Wei_lin 2, XU Jian_jun 2 (1.Changchun University of Science and Technology,Changchun 130026,China;2.Daqing Geophysical company, Daqing 163359, China)
Being the main parts in the Songliao basin's filling, Jurassic volcanic and sedimentary materials formed two volcanic cycles, Yingcheng cycle and Huoshiling cycle. The lower level of Huoshiling volcanic rock is alkalic, and the upper is calc-alkalic series. The lower level of Yingcheng volcanic rock is tholeiitic, and the upper is alkalic series. The evidence shows that the Xujiaweizi fault-depression were undergone three processes of extention and one short time of compression.
【CateGory Index】： P588.14