Columnar joints are regular columnar primary magmatic structure with polygonal cross sections developed in volcanic rocks which are commonly induced in cooling basaltic larva with low viscosity and high fluidity.In re...Columnar joints are regular columnar primary magmatic structure with polygonal cross sections developed in volcanic rocks which are commonly induced in cooling basaltic larva with low viscosity and high fluidity.In recent years,typical columnar joints in acidic volcanic rocks have been discovered in many other regions in China,including Quzhou area in Zhejiang Province,Siping and Shanmen area in Jilin Province.展开更多
文摘Columnar joints are regular columnar primary magmatic structure with polygonal cross sections developed in volcanic rocks which are commonly induced in cooling basaltic larva with low viscosity and high fluidity.In recent years,typical columnar joints in acidic volcanic rocks have been discovered in many other regions in China,including Quzhou area in Zhejiang Province,Siping and Shanmen area in Jilin Province.
