We describe the distribution and characters of a megaporphyritic basalt flow field that was arguably the earliest described ‘giant phenocryst basalt’ (GPB) from the Deccan Volcanic Province (DVP). It is a marker horizon exposed in a >30,000 km² area below the Mahabaleshwar Formation in the western DVP. Its presence, distribution and stratigraphic importance as a regional marker horizon are enumerated. Available geochronological and paleomagnetic data suggest that the stratigraphic position of the Rajgad GPB coincides with polarity reversal in Chron 29 recorded from the basaltic lava sequence of the Western DVP.

中文翻译：

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拉贾德（Rajgad）GPB：印度西德干火山省的大型斑状流场

我们描述了大型斑状玄武岩流场的分布和特征，该流域可以说是德干火山省（DVP）最早描述的“巨型玄武岩玄武岩”（GPB）。它是在DVP西部Mahabaleshwar组下方大于30,000 km ^2的区域中暴露的标志层。列举了其作为区域标志层的存在，分布和地层重要性。现有的年代学和古地磁数据表明，Rajgad GPB的地层位置与西DVP玄武岩熔岩序列记录的Chron 29中的极性反转相吻合。