Archaean geochemistry : the origin and evolution of the Archaean continental crust
著者
書誌事項
Archaean geochemistry : the origin and evolution of the Archaean continental crust
Springer-Verlag, 1984
- : U.S.
- : Germany
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注記
"Final report of the IGCP-project no. 92."
Includes bibliographies and index
内容説明・目次
内容説明
Archaean Geochemistry 1972 - 1984 The realisation that the continental crust contains well-preserved relics which date as far back as 4/5 of the Earth's age has given a great impetus to the study of early Precambrian terrains. As late as the mid-sixties the Archaean still constituted the 'terra-in- cognita' of earth science. High metamorphic grades, poor out- crop, and not least a widely assumed obliteration of early crustal records by convective recycling and thermal reworking had com- bined to discourage research in this field. Many excellent local studies existed, notably around gold mining centres, but remained unrelated to a broader regional and theoretical understanding. This situation has changed as the consequence of two inter-related factors: (1) advances in isotopic methods and their application to Precambrian rocks, and (2) the recognition that some of the oldest terrains have retained a wealth of primary igneous and sedi- mentary textures and even geochemical characteristics.
目次
Mantle Chemistry and Accretion History of the Earth.- Geochemical Characteristics of Archaean Ultramafic and Mafic Volcanic Rocks: Implications for Mantle Composition and Evolution.- Archaean Sedimentary Rocks and Their Relation to the Composition of the Archaean Continental Crust.- Spatial and Temporal Variations of Archaean Metallogenic Associations in Terms of Evolution of Granitoid-Greenstone Terrains with Particular Emphasis on the Western Australian Shield.- Magma Mixing in Komatiitic Lavas from Munro Township, Ontario.- Oxygen Isotope Compositions of Minerals and Rocks and Chemical Alteration Patterns in Pillow Lavas from the Barberton Greenstone Belt, South Africa.- Petrology and Geochemistry of Layered Ultramafic to Mafic Complexes from the Archaean Craton of Karnataka, Southern India.- Pressures, Temperatures and Metamorphic Fluids Across an Unbroken Amphibolite Facies to Granulite Facies Transition in Southern Karnataka, India.- Origin of Archaean Charnockites from Southern India.- Radiometric Ages (Rb-Sr, Sm-Nd, U-Pb) and REE Geochemistry of Archaean Granulite Gneisses from Eastern Hebei Province, China.- The Most Ancient Rocks in the USSR Territory by U-Pb Data on Accessory Zircons.- Age and Evolution of the Early Precambrian Continental Crust of the Ukrainian Shield.- Significance of Early Archaean Mafic-Ultramafic Xenolith Patterns.
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