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绪言关于太古宙绿岩带的起源,目前有两个学派,一个学派(如Goodwin,Baragar和McGlynn倡导的)论为绿岩带是由硅铝基底火山岩盆地的下陷和断裂结果而形成的;另一学派(如Windley,Anhaeusser倡导的)则认为由于类似于板块构造的作用导致形成绿岩带。Kroner指出上述两种模式之间如仅据岩石成因观点是难以区别的。对一个地区进行古地理和构造变质史的分析,乃地质构造研究的有力工具。因此,本文及其参考书(Dimroth等人,正编写中)似综合阿比提比带中南部古地理和构造变质演化的研究成果(图1)。所利用的资料均为公开的并据此加以评述。仅极少数例外,即
INTRODUCTION With regard to the origins of the Archean greenstone belt, there are currently two schools of thought, one school (as advocated by Goodwin, Baragar and McGlynn) that the Greenstone Belt was formed as a result of subsidence and fracture of the basaltic basaltic volcanic basins. A school of thought (as advocated by Windley and Anhaeusser) argues that greenstone belts are formed due to the similar effects of plate tectonics. Kroner pointed out that the above two modes are indistinguishable from the viewpoint of rock genesis only. The analysis of palaeogeography and tectonic metamorphism in a region is a powerful tool for the study of geological structure. Therefore, this article and its reference (Dimroth et al., Now under preparation) appear to synthesize the findings of the Abitibi belt with paleogeography and tectonic metamorphism in the central and southern part of the country (Figure 1). The information used is public and commented accordingly. With only a few exceptions, that is