منابع مشابه
The Oceanic Lithosphere
1. Background: Mid-Ocean Ridges and the oceanic lithosphere 2. Methods of study of the oceanic lithosphere 3. Components of the oceanic lithosphere and their physical properties 4. Structure of the oceanic lithosphere 4.1 ‘Homogeneous’ lithosphere 4.2 ‘Heterogeneous’ lithosphere 4.3 Hot Spot Influenced Lithosphere 4.4.Continent to Ocean Transition 5. Forming the oceanic lithosphere at the ridge...
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The yield strength of oceanic lithosphere determines the mode of mantle convection in a terrestrial planet, and low-temperature plasticity in olivine aggregates is generally believed to govern the plastic rheology of the stiffest part of lithosphere. Because, so far, proposed flow laws for this mechanism exhibit nontrivial discrepancies, we revisit the recent high-pressure deformation data of M...
متن کاملEffective thermal expansivity of Maxwellian oceanic lithosphere
The thermal expansivity of oceanic lithosphere is a key mineral physics parameter that controls the rate of seafloor subsidence. Because of strongly temperature-dependent mantle rheology, effective expansivity for lithosphere as a whole could be substantially lower than indicated by mineral physics data. Viscoelastic modeling indicates that this reduction in expansivity could be as high as ∼15–...
متن کاملGeoid Data and Thermal Structure of the Oceanic Lithosphere
A long-standing question is whether old oceanic lithosphere continues cooling as the boundary layer of a halfspace or approaches thermal equilibrium, as modeled by a finite thickness plate. Although the latter is the most direct inference from seafloor depths and heat flow, other explanations have been proposed. We investigate this issue using published results for the derivative of the oceanic...
متن کاملBuckling of the Oceanic Lithosphere from Geophysical Data and Experiments
_Abstract. Two major hypotheses have been advanced for the formation of the long wavelength (100-300 km) undulations of oceanic basement and overlying sediments developed in the central Indian Ocean basin: whole layer folding (buckling) and local thickening (inverse boudinage). Using appropriately scaled two-layer analogue models for the oceanic lithosphere comprising a brittle layer above a du...
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ژورنال
عنوان ژورنال: Nature
سال: 1974
ISSN: 0028-0836,1476-4687
DOI: 10.1038/250099a0