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Earths Oldest Rocks provides a comprehensive overview of all aspects of early Earth, from planetary accretion through to development of protocratons with depleted lithospheric keels by c. 3.2 Ga, in a series of papers written by over 50 of the world's leading experts. The book is divided into two chapters on early Earth history, ten chapters on the geology of specific cratons, and two chapters on early Earth analogues and the tectonic framework of early Earth. Individual contributions address topics that range from planetary accretion, a review of Earth meteorites, significance and composition of Hadean protocrust, composition of Archaean mantle and deep crust, all aspects of the geology of Paleoarchean cratons, composition of Archean oceans and hydrothermal environments, evidence and geological settings of early life, early Earth analogues from Venus and New Zealand, and a tectonic framework for early Earth. * Contains comprehensive reviews of areas of ancient lithosphere on Earth, of planetary accretion processes, and of meteorites * Focuses on specific aspects of early Earth, including oldest putative life forms, evidence of the composition of the ancient atmosphere-hydrosphere, and the oldest evidence for subduction-accretion * Presents an overview of geological processes and model of the tectonic framework on early Earth.

Geology, Stratigraphic --- Geodynamics. --- Stratigraphie --- Géodynamique --- Geodynamics

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As a final product of the International Geological Correlation Program (IGCP) Project 217, this volume brings together significant advances in the understanding of Proterozoic crustal evolution. This IGCP Project focussed on nine research objectives: 1) Comparison of Archean and Proterozoic supracrustal assemblages to more fully understand differences between Archean and post-Archean tectonic regimes; 2) To more fully understand the geochemical differences between Archean and post-Archean sediments and to evaluate the various factors that control sediment composition; 3) From combined U/Pb zir

Geology, Stratigraphic --- Agnotozoic --- Algonkian --- Proterozoic Era --- Earth --- Crust. --- Stratigraphie --- Earth (Planet) --- Terre --- Crust --- Croûte

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Recent developments have shown that many full and partial ophiolites are preserved in Precambrian cratons. This book provides a comprehensive description and discussion of the field aspects, geochemistry, geochronology and structure of the best of these ophiolites. It also presents syntheses of the characteristics of ophiolites of different ages, and an analysis of what the characteristics of these ophiolites mean for the thermal and chemical evolution of the earth. This title emphasizes new studies of Precambrian Geology that have documented ophiolites, ophiolitic fragments, and oph

Geology, Stratigraphic --- Ophiolites --- Stratigraphie --- Geology, Stratigraphic. --- Ophiolites. --- GG Precambrian --- Igneous rocks --- Age of rocks --- Rocks --- Stratigraphic geology --- Physical geology --- Age

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Features original research from the full spectrum of physical and natural sciences addressing problems in quaternary science

Geology. Earth sciences --- Geology, Stratigraphic --- Stratigraphie --- Periodicals --- Périodiques --- Periodicals. --- Périodiques. --- #TS:WAAR --- Offprints --- Agriculture Sciences --- Earth Sciences --- Agronomy --- Geology --- Geology, Stratigraphic - Quaternary - Periodicals.

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Sequence stratigraphy represents a new paradigm in geology. The principal hypothesis is that stratigraphie successions may be subdivided into discrete sequences bounded by widespread unconformities. There are two parts to this hypothesis. First, it suggests that the driving forces which generate sequences and their bounding unconformities also generate predietable three-dimensional stratigraphies. In re cent years stratigraphie research guided by sequence models has brought about fundamental im­ provements in our understanding of stratigraphie processes and the controls of basin architecture. Sequence models have provided a powerful framework for mapping and numerieal modeling, enabling the science of stratigraphy to advance with rapid strides. This research has demonstrated the importance of a wide range of processes for the generation of cyclie sequences, including eustasy, tectonics, and orbital forcing of climate change. The main objective of this book is to document the sequence record and to discuss our current state of knowledge about sequence-generating processes.

Geology, Stratigraphic --- Stratigraphie --- #Hist.Geol. --- Age of rocks --- Rocks --- Stratigraphic geology --- Physical geology --- Age --- Geology, Stratigraphic. --- #Hist.Geol --- Sedimentology. --- Geology. --- Geognosy --- Geoscience --- Earth sciences --- Natural history --- Petrology