Various lines of geological,geophysical and geochemical evidence indicate that the K-rich volcanic belt in Northeast China as represented by the volcanic groups at Wudalianchi,Erkeshan and Kelo was developed,in terms ...Various lines of geological,geophysical and geochemical evidence indicate that the K-rich volcanic belt in Northeast China as represented by the volcanic groups at Wudalianchi,Erkeshan and Kelo was developed,in terms of plate tectonics,in a rift valley system within the continental plate,The volcanic material includes effusive lavas and explosive pyroclastics whose characteristics and flowing/accumulation mechanisms were studied in detail,The distribution of pyroclastics shows that the eruption is of Strombolian type with increasing intensity towards the late stages.展开更多
文摘Various lines of geological,geophysical and geochemical evidence indicate that the K-rich volcanic belt in Northeast China as represented by the volcanic groups at Wudalianchi,Erkeshan and Kelo was developed,in terms of plate tectonics,in a rift valley system within the continental plate,The volcanic material includes effusive lavas and explosive pyroclastics whose characteristics and flowing/accumulation mechanisms were studied in detail,The distribution of pyroclastics shows that the eruption is of Strombolian type with increasing intensity towards the late stages.
