tuff lava

In the southeast Jiangxi volcanic terrain are mainly developed Middle-Late Jurassic mildly acidic volcanic clastic rocks and volcanic lava, of which the most widely distributed are the explosive-effluent rhyolitic crystal fragment tuff lava;

赣东南火山岩区主要发育侏罗纪中、晚世中酸性火山碎屑岩&火山熔岩，其中以爆溢相产出的流纹质晶屑凝灰熔岩分布最广；

Contemporaneous volcanic activity is represented by basic to intermediate lava and tuff.

同时期的火山活动性是由中性熔岩与凝灰岩呈基性而体现出来的.

The rock types include rhyolite, dacite and sedimentary volcaniclastic rocks, among which the lava tuff breccia was newly discovered in the 1 ∶ 50 000 region.

岩石类型为流纹岩、英安岩和沉火山碎屑岩，其中的熔结角砾凝灰岩是本次1∶5万区调中的新发现。