摘要
江苏仪征捺山为一个典型的古火山口,由玄武质岩石组成的火山溢流相、爆发相、通道相等岩相在空间上呈环状分布,且均向内倾斜,构成一个上大下小、向北东倾斜的喇叭口。火山喷发时间在距今约1000万年前,属中新世晚期产物。尤其是玄武岩石柱林规模宏大,气势雄伟,千恣百态,其火山石柱林价值已不再沉寂于地学标尺上,而以一种奇致的新姿态将成为本地域旅游业的新亮点。
Nashan, a typical paleo crater, is composed of volcanic overflow facies, eruption facies, chunnel facies of basaltic rocks and ring distributed spatially, inclining entad, composing a bell-mouth inclined northeastward. The eruption time occurred 100 Ma. ago and belonging to a product of late Miocene epoch with the basaltic rock forest the largest in scale.
出处
《江苏地质》
2007年第3期212-217,共6页
Jiangsu Geology
关键词
古火山口
石柱林
捺山
江苏仪征
Paleo crater
Rock forest
Nashan, Yizheng, Jiangsu
