These basalts are characterized by the tectonic settings of the oceanic within plate alkaline basalts in both the submarine eruptive facies and pelagic radiolarian silicalite facies.

• 它以具有海底爆发相与远洋放射虫硅质岩相整合和大洋板内碱性玄武岩的构造环境为主要特征。