近几年来,国际地质学界对於花岗岩的成因问题,曾断断续续地展开了极热烈的讨论。一九四七年十二月,美洲地质学会开会於加拿大京城奥太华,曾特别的组织了一个花岗岩成因的圆桌会议,集合了世界上知名的花岗岩专家,来共同讨论这个问题,希系能够得出一个比较圆满的给论。当时提出论文的共有五人:一个是英国花岗岩化理论权威的吕德(H.H,Read)一个是矿物岩石学专家布丁顿(A.F.Buddington) In recent years, the international geological community for the cause of the problem of granite, has intermittently conducted a very heated discussion. In December 1947, the American Geological Society met in Ottawa, capital of Canada. In particular, it organized a granite roundtable meeting bringing together some of the world’s most famous granite experts to discuss this issue, Come to a more satisfactory argument. There were five papers presented at the time: one was H.H. Read, the authority of granite theory in the United Kingdom; A.F. Buddington, a specialist in mineralogy and petrology,