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Geological Evolution of the Earth During the Precambrian

  • Lazarus J. Salop
Book

Table of contents

  1. Front Matter
    Pages I-XII
  2. A. Rock Records
    Pages 22-72
  3. A. Rock Records
    Pages 73-129
  4. A. Rock Records
    Pages 130-200
  5. Lazarus J. Salop
    Pages 201-307
  6. Lazarus J. Salop
    Pages 308-353
  7. Lazarus J. Salop
    Pages 354-378
  8. Lazarus J. Salop
    Pages 379-409
  9. Back Matter
    Pages 410-459

About this book

Introduction

Progress in Precambrian geology has been exceptionally great, indeed quite striking for geologists of the older generation; only some 30-40 years ago the Precambrian appeared as an uncertain and even mystic prelude to geologic evolution. Even the very name - Precambrian - means some indi­ visible unit in the early history of the Earth, the beginning of which is poorly known. At the same time it was obvious that the Precambrian formations are of extremely varied and complex composition and poor knowledge and lack of reliable methods of division and correlation were to blame for the lack of significant progress in studies of this early evolutionary stage of the planet. Certainly, even at the very start of Precambrian studies, the results obtained were quite promising, lifting as they did the mysterious veil over the regional Precambrian; but they presented no general realistic picture of this early stage in the Earth's evolution at that time. Recently, this situation has completely changed, due to new methods of study of the older forma­ tions, and due also to the refinement of some well-known methods, in particular of division, dating, and correlation of "silent" metamorphic strata. Application of different isotope methods of dating was most impor­ tant in providing objective rock age and thereby the age of geologic events recorded in these rocks. Thus it became possible to reconstruct the oldest geologic period of our planet.

Keywords

Cambrian Geologie Präkambrium atmosphere environment evolution formation geology history isotope sediment sedimentation tectonics

Authors and affiliations

  • Lazarus J. Salop
    • 1
  1. 1.All-Union Geological Research Institute (VSEGEI)LeningradUSSR

Bibliographic information

  • DOI https://doi.org/10.1007/978-3-642-68684-9
  • Copyright Information Springer-Verlag Berlin Heidelberg 1983
  • Publisher Name Springer, Berlin, Heidelberg
  • eBook Packages Springer Book Archive
  • Print ISBN 978-3-642-68686-3
  • Online ISBN 978-3-642-68684-9
  • Buy this book on publisher's site