Bruce Chappell was one of the most distinguished geologists of his generation whose contributions to understanding the origins of granites are both insightful and profound. A pioneer in the application of X-ray fluorescence spectrography to the analysis of geological materials, his radical ideas about magma genesis, still the subject of vigorous debate, have dominated and largely determined the global directions of subsequent research on granites. His restite model, the recognition that most granite magmas move bodily away from their source regions as a mixture of melt and solid residual material, the progressive separation of which determines the magma composition, underlies his tenet that granites are images of their source. His consequent recognition, with Allan White, that there are two fundamentally different types of granite magma, I-type (derived from igneous sources) and S-type (derived from weathered sedimentary sources), each with its distinctive evolutionary path and associated mineralization, continues to underpin research into granites worldwide, and the search for granite-related mineral deposits.

中文翻译：

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布鲁斯·威廉·查佩尔 1936?2012

布鲁斯·查普尔 (Bruce Chappell) 是他那一代最杰出的地质学家之一，他对理解花岗岩起源的贡献既深刻又深刻。作为将 X 射线荧光光谱应用于地质材料分析的先驱，他关于岩浆成因的激进思想仍然是激烈争论的主题，主导并在很大程度上决定了后续花岗岩研究的全球方向。他的重岩模型认识到大多数花岗岩岩浆作为熔融和固体残余物质的混合物从其源区整体移开，其逐渐分离决定了岩浆成分，这是他的原则的基础，即花岗岩是其源头的图像。他随后与艾伦·怀特一起认识到有两种根本不同类型的花岗岩岩浆，