论文部分内容阅读
引言关于波罗的地盾是由于向西—南西方向连续增生而发展起来的概念,现在是被普遍接受了,然而它所包含的作用的性质却仍是一个重大争论问题。争论的中心围绕着在早元古代是否发生了板块构造,以及如果是这样,如何详细地将它们和显生宙板块构造相比拟?当然,将显生宙板块构造模式应用于元古宙地体的可能性的限度,就在于关于显生宙作用本身了解的程度。本文中,我们提出岩石学的证据,来证明在瑞典中部一个标准
INTRODUCTION The concept of the Baltic Shield, developed as a result of a series of west-south-west proliferation, is now generally accepted, yet the nature of the role it contains remains a matter of major debate. The focus of the debate centered on whether plate tectonics occurred in the Early Proterozoic, and if so, how to compare them to the Phanerozoic tectonics in detail? Of course, the Phanerozoic tectonism was applied to Proterozoic terranes The limits of the possibility lies in the extent to which the Phanerozoic itself is understood. In this paper, we present evidence of petrology to prove a standard in central Sweden