Abstract Laboratory measurements have been made on 162 granitoid samples for thermal conductivity, density, and porosity from the Singhbhum Craton in eastern India, one of the oldest cratons (3.53 Ga), which is surrounded by highly-rich mineralized belts. Study reveals that the thermal conductivity of co-eval Paleoarchaean granitoids depicts an increasing trend, statistically different at a 95 % confidence level, from north to south. This variation can be attributed to the relative abundances of major minerals and is corroborated by diverse nature of magma sources. Extensive coverage for thermal conductivity would help in robust estimates of heat flow for which plans are underway.

中文翻译：

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印度东部辛格布姆克拉通花岗岩类的热导率、密度、岩石学和地球化学特征

摘要 对印度东部 Singhbhum 克拉通的 162 个花岗岩样品的热导率、密度和孔隙度进行了实验室测量，该克拉通是最古老的克拉通之一 (3.53 Ga)，周围环绕着丰富的矿化带。研究表明，同时期古太古代花岗岩的热导率呈现增加趋势，从北到南在 95% 的置信水平上存在统计学差异。这种变化可归因于主要矿物的相对丰度，并被岩浆来源的不同性质所证实。对热导率的广泛覆盖将有助于对正在进行的计划的热流进行可靠的估计。