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在我国东南部广大的中生代酸性、中酸性火山岩分布地区广泛分布着一种自碎火山—侵入岩。它是火山作用的产物,往往构成一种具有自碎特征的火山岩与次火山岩组合。其形成时代大部分属晚侏罗世。主要分布地点有:江西抚州至乐安的玉华山、相山一带;浙江桐庐、临安—昌化、龙团;福建古田、龙溪、闽清、德化石牛山、南靖梅林;湘粤边界的天鹅寨;广东惠来西宁等地。由于这种自碎火山—侵入岩的结构、产状比较特殊,对其岩相归属及岩石成因长期以来有不同的看法。
In the vast southeastern China Mesozoic acidic, acidic distribution of volcanic rocks are widely distributed in a self-broken volcano-intrusive rock. It is the product of volcanism and often constitutes a combination of volcanic rocks and subvolcanic rocks with self-crushing characteristics. Most of its formation is Late Jurassic. The main locations are: Yuhua Mountain in Fuzhou to Le’an in Jiangxi Province, Xiangshan area; Tonglu, Zhejiang Province, Lin’an - Changhua, Longtuan; Fujian Gutian, Longxi, Minqing, Dehua Niushan, Nanjing Merlin; Swan Walled; Huili Xining, Guangdong and other places. Due to the structure of this self-broken volcano-intrusive rock, the occurrence is rather special and has long had a different view on its lithofacies and rock origin.