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大火成岩省（ｌａｒｇｅｉｇｎｅｏｕｓｐｒｏｖｉｎｃｅｓ或ＬＩＰｓ）是指巨量的富铁镁岩石的连续侵位。包括大陆溢流玄武岩和相关的侵入岩、火山被动边缘、大洋高原、洋脊、海山群及洋盆溢流玄武岩。这些“火成岩省”不是产出在正常的大洋中脊扩张中心（Ｍ．Ｆ．Ｃｏｆｆｉ
Large igneous provinces (LIGs) refer to the continuous emplacement of large amounts of iron-rich rocks. Including the continental overflow basalt and related intrusive rocks, volcanic passive edge, the ocean plateau, ridge, seamounts and ocean basal overflow basalts. These “igneous provinces” are not produced at normal oceanic ridges expansion centers (M.F.Coffi