The last 30 years have been marked by a huge international effort to explore the deep sea floor, especially the mid-ocean ridge system. Thanks to the continuous development of new technologies and tools such as high-resolution multibeam sonar systems, sid e-scan sonars, deep submersibles and high-performance geophysical tools, these efforts have resulted in a much better knowledge of the prominent immersed part of the Earth's crust. This book focuses on the oceanic crust of the present-day oceans and describes a number of well-studied oceanic areas, presenting examples from recent scientific studies. It also discusses the models and hypotheses proposed to explain the formation of the ocean crust and its progression through hydrothermal evolution, ageing and subduction, with deliberate emphasis on magmatic processes.
|Series:||Springer Praxis Books / Geophysical Sciences Series|
|Edition description:||1st Edition.|
|Product dimensions:||0.00(w) x 0.00(h) x (d)|
Table of ContentsPreface.- Oceans, continents, and the fundamental cycle of the oceanic lithosphere.- Magma series from oceanic domains.- Surveying and sampling the oceanic crust.- The worldwide oceanic ridge. Geographic extension, morphology and segmentation.- Structure and lithology of the oceanic crust of the present-day oceans.- Structure and lithology of fossic oceanic crust in ophiolites.- Shallow processes: volcanic and tectonic activity of oceanic ridges.- Deep processes: mantle diapirs, magma extraction and models of accretion magma chambers.- Basalt-seawater interaction: metamorphic and hydrothermal processes.- Intraplate oceanic magmatism.- The fate of the oceanic crust: from subduction to recycline.- Conclusion: the oceanic crust cycle.- References.- Index.