Download or read book The Thermal Evolution of Oceanic Lithosphere in the South Atlantic written by Bruce M. Herman and published by . This book was released on 1988 with total page 820 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book The Structural and Thermal Evolution of Upper Oceanic Crust in the Western South Atlantic written by Dominik A. Kardell and published by . This book was released on 2020 with total page 332 pages. Available in PDF, EPUB and Kindle. Book excerpt: The evolution of oceanic crust plays an integral role in global heat flow, geochemical cycles, and in shaping the environmental conditions harboring the crustal biosphere. Because oceanic crust is normally buried beneath several kilometers of water and encompasses a vast area of the Earth's rigid surface, spatially extensive and coherent geophysical data are difficult to acquire in the oceanic domain. Consequently, our current understanding of the evolution of oceanic crust is based on partially conflicting compilations of data that are acquired at different scales and using different methods. Here I present geophysical constraints from an extensive seismic dataset that continuously covers 0-70 Ma crust in the western South Atlantic. Analysis of regional seismic velocity trends in the upper crust shows a continuous increase in basement velocity to crustal ages of at least 58 Ma. This trend indicates an evolution of upper crustal velocities that lasts significantly longer than measured or predicted by previous studies. The results provide evidence for ongoing hydrothermal circulation in relatively old upper crust, which is consistent with heat flow studies. To further test this concept, I used high-resolution seismic velocity models to estimate detailed porosity and permeability distributions that constrain models of hydrothermal fluid flow at five different crustal ages. The resulting advective and conductive surface heat fluxes are consistent with both predictions of heat flux by lithospheric cooling models and measured conductive heat flux at the seafloor. Additionally, computed hydrothermal volume fluxes largely agree with global estimates for the modeled crustal ages. The models are therefore consistent with a "sealing age" of ~65 Ma, which is also inferred from a compilation of global heat flow measurements at the seafloor. Close to the Rio Grande Rise, an oceanic plateau west of the study area, a fine-scale seismic velocity model reveals multiple large fault zones penetrating at least ~1.5 km into the crust. These faults likely accommodate differential subsidence between thickened, warm oceanic plateau crust and cold oceanic crust. Modeled fluid fluxes are elevated along the interpreted fault zones and across the seafloor. Crust adjacent to oceanic plateaus may exhibit elevated levels of tectonic activity and fluid flow globally. The estimated global volume of fluid entering the ocean in this type of setting amounts to 43 km3, which is ~2% of the hydrothermal flux in the axial region. This potentially has implications for global chemical cycles, the hydration of mature oceanic crust, and the oceanic crustal biosphere

Download or read book The Thermal Evolution of Mantle Convection and Oceanic Lithosphere written by David Jenkins and published by . This book was released on 2014 with total page 148 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Thermal Evolution of Lithosphere and Processes in the Earth s Interior written by and published by . This book was released on 1989 with total page 188 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Evolution of the South Atlantic written by E. S. W. Simpson and published by . This book was released on 1977 with total page 56 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Passive Margins written by K.R. McClay and published by Geological Society of London. This book was released on 2020-07-01 with total page 442 pages. Available in PDF, EPUB and Kindle. Book excerpt: This volume has evolved from papers written in memory of Professor David Roberts. They summarize the key findings of recent research on passive margins, from tectonics, bathymetry, stratigraphy and sedimentation, structural evolution and magmatism. Papers include analyses of the central and southern Atlantic margins of South America and Africa, papers on magmatism and extension in the NE Brazilian margin and on the Cote de Ivoire margin, rift architectures of the NW Red Sea margin, tectonics of the eastern Mediterranean margin, salt tectonics of passive margins of the Gulf of Mexico and Brazil, and papers on the NW Shelf margin of Australia. The volume provides readers with new insights into the complexities of passive margin systems that are in reality, not so passive.

Download or read book Birth and Evolution of the Oceanic Lithosphere in Hot and Cold Portions of the Mid Atlantic Ridge written by Anna Cipriani (geologa) and published by . This book was released on 2001 with total page 159 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Geoid and its Geophysical Interpretations written by Petr Vanicek and published by CRC Press. This book was released on 2020-09-23 with total page 424 pages. Available in PDF, EPUB and Kindle. Book excerpt: Geoid and its Geophysical Interpretations explains how an accurate geoid can be constructed and used for a variety of applied and theoretical geophysical purposes. The book discusses existing techniques for geoid computation, recently developed mathematical and computational tools designed for applications, and various interpretations. Principles and results are well illustrated. This book will be an excellent reference for geodesists, geophysicists, geophysical prospectors, oceanographers, and researchers and students in geophysics and geodesy.

Download or read book The Oceanic Lithosphere written by Cesare Emiliani and published by Harvard University Press. This book was released on 2005-06 with total page 1758 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Tectonic and Thermal Evolution of South Atlantic Marginal Basins written by P. A. Faulkner and published by . This book was released on 2002 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Structures of Ophiolites and Dynamics of Oceanic Lithosphere written by A. Nicolas and published by Springer Science & Business Media. This book was released on 2012-12-06 with total page 369 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Lamont Doherty Geological Observatory of Columbia University written by Lamont-Doherty Geological Observatory and published by . This book was released on 1990 with total page 290 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Geophysical Abstracts written by and published by . This book was released on 1971 with total page 660 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Tectonic and Thermal Evolution of South Atlantic Marginal Basins written by Paul Anthony Faulkner and published by . This book was released on 2000 with total page 256 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Heat Flow Thermal Structure and Thermal Evolution of the Parana Basin Southern Brazil written by Suzanne Jacqueline Hurter and published by . This book was released on 1992 with total page 336 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Geodynamic Evolution of written by François Roure and published by Editions OPHRYS. This book was released on with total page 506 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Treatise on Geophysics written by and published by Elsevier. This book was released on 2015-04-17 with total page 5604 pages. Available in PDF, EPUB and Kindle. Book excerpt: Treatise on Geophysics, Second Edition, is a comprehensive and in-depth study of the physics of the Earth beyond what any geophysics text has provided previously. Thoroughly revised and updated, it provides fundamental and state-of-the-art discussion of all aspects of geophysics. A highlight of the second edition is a new volume on Near Surface Geophysics that discusses the role of geophysics in the exploitation and conservation of natural resources and the assessment of degradation of natural systems by pollution. Additional features include new material in the Planets and Moon, Mantle Dynamics, Core Dynamics, Crustal and Lithosphere Dynamics, Evolution of the Earth, and Geodesy volumes. New material is also presented on the uses of Earth gravity measurements. This title is essential for professionals, researchers, professors, and advanced undergraduate and graduate students in the fields of Geophysics and Earth system science. Comprehensive and detailed coverage of all aspects of geophysics Fundamental and state-of-the-art discussions of all research topics Integration of topics into a coherent whole