The flood basalts of large igneous provinces (LIPs) are fed by a vast and often complicated plumbing system that can include giant dyke swarms, sill complexes, mid- to upper-crustal intrusive complexes, lower-crustal intrusions and a magmatic underplate at the base of the crust. In this study, we focus on the role of two poorly understood and little studied components of LIP plumbing systems: giant circumferential dyke swarms and mid-crustal igneous complexes. Giant circumferential dyke swarms, which have only recently been recognized, are often associated with giant radiating dyke swarms, whose foci are located at or near the centre of the circumferential swarms. The giant radiating swarms are usually interpreted to be generated during domal uplift above a mantle plume. We compare giant circumferential dyke swarms, giant radiating dyke swarms and coupled circumferential-radiating dyke systems with possible analogues on Venus, called coronae, novae and corona-nova systems, respectively. Coronae are large tectonomagmatic features that typically include a quasi-circular/elliptical annulus of graben that are thought to be underlain by dykes. Novae are large radiating graben systems that are also thought to be underlain by dykes. Coronae, novae and coupled corona-nova systems are usually interpreted to be generated above mantle plumes or diapirs. In addition, we discuss the potential importance of mid-crustal intrusive complexes in LIP plumbing systems, especially those that may be circumferential to plume centres. Given their location they could act as feeders to either giant radiating or giant circumferential dyke swarms, or both.

大火成岩省（LIP）的洪水玄武岩由庞大且通常复杂的水暖系统供食，该系统可包括巨型堤防群，窗台复合体，中上地壳侵入性复合体，下地壳侵入体和底部的岩浆底板地壳。在这项研究中，我们重点研究LIP管道系统的两个知之甚少且研究很少的成分：巨大的周向堤群和中地壳火成岩复合体。直到最近才认识到的巨型周向堤防群通常与巨型辐射堤防群相关联，其焦点位于周向群的中心或附近。通常认为巨大的辐射群是在地幔柱上方的隆升过程中产生的。我们比较了巨大的周向堤防群，巨大的辐射堤群和耦合在金星上的周向辐射堤系统以及可能的类似物，分别称为电晕，新星和电晕-新星系统。日冕是大型的构造学特征，通常包括一个grab圆形的/椭圆形的that环，被认为是在堤下。Novae是大型辐射抓斗系统，也被堤坝掩盖。通常认为电晕，新星和耦合的电晕-新星系统是在地幔柱或辉石之上产生的。此外，我们讨论了LIP管道系统中中地壳侵入复合体的潜在重要性，尤其是可能在羽状中心周围的那些。给定它们的位置，它们可以充当巨型辐射或巨型周向堤防群或两者的馈线。