暴烈的大厦和早二叠的 Tarim 洪水暗岩的管道系统的详细结构被三维的地震成像调查。Tarim 洪水暗岩从中央火山爆发了的图象表演散布了主要差错。最高岩浆与 ~ 0.74km 3 和 50 的方面比率的体积形成了一片单个熔岩脑叶,与高流出率暗示表流动爆发。在表面下的水平,不管尺寸,所有中央火山让分开的像管子的 feeder 发泄。仅仅 13 个堤在浅深度被识别 < 在熔岩表面下面的 100m;更深的堤甚至更稀罕。像管子的管道系统和 dilational 堤的少量与在地球上的洪水暗岩省的典型管道系统不同,它是通常控制快活的 dikesill 网络。气体驱动的精力旺盛的爆发能从想象的结构被推断,它意味着 Tarim 洪水暗岩可能带了并且释放暴烈的气体的一个大比例,类似于某 mafic volcaniclastic 忍受存款的大陆人洪水暗岩省。
The detailed structures of the volcanic edifice and plumbing system of the early Permian Tarim flood basalt were investigated by three-dimensional seismic imaging. The images show that the Tarim flood basalt erupted from central volcanoes distributed along major faults. The uppermost magma formed a single lava lobe with a volume of - 0.74 km3 and an aspect ratio of 50, implying a sheet flow eruption with a high effusion rate. At the subsurface level, all central volcanoes, irrespective of size, had a separate pipe-like feeder vent. Only thirteen dikes were identified at shallow depths of 〈100 m below the lava surface; deeper dikes were even rarer. The pipe- like plumbing system and the paucity of dilational dikes were different from the typical plumbing system of flood basalt provinces on Earth, which are normally buoyancy- controlled dike-sill networks. A gas-driven vigorous eruption can be inferred from the imaged structure, which means that the Tarim flood basalt may have carried and released a large proportion of volcanic gas, similar to some mafic volcaniclastic deposit-bearing continental flood basalt provinces.