A series of volcanic rocks were developed in the deep part of Anda faulting depression. The reflection of the rocks are mainly stratiform and hummocky. Three kinds of volcanic facies, e.g. explosion facies, effusion f...A series of volcanic rocks were developed in the deep part of Anda faulting depression. The reflection of the rocks are mainly stratiform and hummocky. Three kinds of volcanic facies, e.g. explosion facies, effusion facies and sub-volcanic facies,were recognized by different reflecting characteristics in the seismic profile. The volcanic rocks are formed during three episodes of volcanic activities from Shahezi Formation to Yingcheng Formation. The volcanisms have relation to the formation of Songliao Basin and regional tectonics of northeastern China. Some of the volcanic rocks are good oil and gas reservoirs.展开更多
文摘A series of volcanic rocks were developed in the deep part of Anda faulting depression. The reflection of the rocks are mainly stratiform and hummocky. Three kinds of volcanic facies, e.g. explosion facies, effusion facies and sub-volcanic facies,were recognized by different reflecting characteristics in the seismic profile. The volcanic rocks are formed during three episodes of volcanic activities from Shahezi Formation to Yingcheng Formation. The volcanisms have relation to the formation of Songliao Basin and regional tectonics of northeastern China. Some of the volcanic rocks are good oil and gas reservoirs.
