SGER: The Time of Initiation and Chemical/Isotopic Characteristics of the Early Deccan Volcanism: A Study of the Drill Core Basalts, Deccan Traps, India

这是一项多机构合作研究， 从3至5公里深的钻孔中恢复的新鲜玄武岩流序列 西部和东部大陆边的核心部分， 印度近海，以及来自-800米岩芯的样品 （Jamali Well） 德干火山作用。 这些研究包括（a）40 Ar/39 Ar测年， 整个岩石和斜长石分离（增量加热 技术）和（B）主要、次要和痕量元素（XRF，INAA）， Sr、Nd和Pb同位素分析。 从这些数据中获得的数据 独特的岩芯玄武岩将与现有的 地面流数据库，以生成 整个德干省的时间和化学演变， 特别是对于溢流玄武岩活动的初始阶段。

This is a multi-institutional collaborative study of selected sequences of fresh basalt flows recovered from 3 to 5-km deep drill core sections from the western and eastern continental margins and offshore India, and also the samples from an -800-m drill core (Jamali Well Deccan volcanism. These studies include (a) 40Ar/39Ar dating of whole rock and plagioclase separates (incremental heating technique) and (b) major, minor, and trace element (XRF, INAA) and Sr, Nd, and Pb isotopic analyses. The data obtained on these unique drill core basalts will be integrated with the existing database of surface flows to generate a comprehensive model of temporal and chemical evolution for the entire Deccan province, but especially for the initial phases of flood basalt activity.