(Table 1) Chemical and isotopic analyses of Rajmahal Traps and Ninetyeast Ridge volcanics

The hypothesis that hotspots are the sources of many continental flood basalts is evaluated geochemically for the proposed Rajmahal Traps-Ninetyeast Ridge-Kerguelen hotspot system. It appears that the Kerguelen hotspot did not directly feed Rajmahal magmas, although it may have provided a source of heat for Rajmahal activity.“热点为多数大陆溢流玄武岩（continental flood basalts）成因”这一假说，针对所提出的拉杰马哈尔暗色岩（Rajmahal Traps）-九十东海脊（Ninetyeast Ridge）-凯尔盖朗热点（Kerguelen hotspot）系统，通过地球化学手段开展了验证。研究结果表明，凯尔盖朗热点并未直接为拉杰马哈尔岩浆活动提供物源，但其或可为该区域的岩浆活动提供热源。