Results 201 to 210 of about 21,832 (251)
Some of the next articles are maybe not open access.
The Lithosphere-Asthenosphere Boundary
Annual Review of Earth and Planetary Sciences, 2010Seismological models of upper-mantle structure are providing new constraints on the physical and chemical properties that differentiate the lithosphere from the asthenosphere. A wide variety of studies are consistent with an oceanic lithosphere that corresponds to a dry, chemically depleted layer over a hydrated, fertile asthenosphere.
Fischer, Karen M. +3 more
openaire +2 more sources
Lithos, 2019
The North China Craton (NCC) underwent significant lithospheric destruction during the Mesozoic, although the mechanisms and timings associated with this process remain debated.
Fei Xue +3 more
semanticscholar +1 more source
The North China Craton (NCC) underwent significant lithospheric destruction during the Mesozoic, although the mechanisms and timings associated with this process remain debated.
Fei Xue +3 more
semanticscholar +1 more source
Lithosphere–asthenosphere viscosity contrast and decoupling
Physics of the Earth and Planetary Interiors, 2011The coupling/decoupling between the lithosphere and asthenosphere has significant implications for understanding many important aspects of plate tectonics and geodynamics. To drive plate motion, man- tle convection requires coupling at the lithosphere–asthenosphere (LA) interface.
DOGLIONI, Carlo +3 more
openaire +4 more sources
Is the asthenosphere electrically anisotropic?
Earth and Planetary Science Letters, 2000Abstract Two techniques for resolving the conductance of an electrically conductive asthenosphere are presented. The first technique combines observatory electromagnetic data in the period range of the daily variation and longer, which provides penetration depths of 400 km and deeper, with laboratory data of the conductivity of upper mantle materials.
Karsten Bahr, Al Duba
openaire +1 more source
Nature Physical Science, 1972
Solubility considerations lead to a model of the asthenosphere which contains a CO2-rich liquid phase. The model explains variations in the asthenosphere between ocean and shield areas.
openaire +1 more source
Solubility considerations lead to a model of the asthenosphere which contains a CO2-rich liquid phase. The model explains variations in the asthenosphere between ocean and shield areas.
openaire +1 more source
Melt squirt in the asthenosphere
Journal of Geophysical Research, 1975The interpretation of the seismic low-velocity zone as a region of partially molten rock is extended to explain the transient displacements following the 1946 Nankaido earthquake. Three partial melt models are considered to account for the observed time constant of 3–5 years: large-scale diffusion of melt through a porous matrix can decay over ...
Gerald Mavko, Amos Nur
openaire +1 more source
Geological Society of America Bulletin, 1946
From the geophysical and physical laboratories at Harvard University have recently come data bearing on the effect of rising temperature on the compressibility of liquids, glasses, and crystalline solids. These new data have compelled the author of the following article to revise an earth-model which, in 1942, he derived from some general assumptions ...
openaire +1 more source
From the geophysical and physical laboratories at Harvard University have recently come data bearing on the effect of rising temperature on the compressibility of liquids, glasses, and crystalline solids. These new data have compelled the author of the following article to revise an earth-model which, in 1942, he derived from some general assumptions ...
openaire +1 more source
A Global View of the Lithosphere-Asthenosphere Boundary
Science, 2009Seismic imaging reveals a global velocity anomaly at depths of 70 to 100 kilometers that may be from some melt or a strong fabric in Earth’s mantle.
Rychert, C.A., Shearer, P.M.
openaire +3 more sources
Enriched Asthenosphere and Depleted Plumes
International Geology Review, 1996“Lithosphere” and “asthenosphere” are mechanical concepts; “depleted mantle” (DM), “enriched mantle” (EM), and “primitive mantle” (PM) are chemical concepts. Upper mantle, lower mantle, and D″ are seismological subdivisions. Geochemistry provides few constraints on the locations of mantle reservoirs, but it is generally assumed that the MORB reservoir (
openaire +2 more sources
A plume origin for hydrous melt at the lithosphere–asthenosphere boundary
Nature, 2022D. Blatter, S. Naif, K. Key, A. Ray
semanticscholar +1 more source