安裝中文字典英文字典辭典工具!
安裝中文字典英文字典辭典工具!
|
- Stress in the lithosphere: Inferences from steady state flow of rocks . . .
Extrapolations of flow equations to a representative geologic strain rate of 10 −14 sec for halite, marble, quartzite, dolomite, dunite and enstatolite are now warranted because the steady state flow processes in the experiments are identical to those in rocks and because the geotherms are reasonably well established More direct estimates
- State of stress in the lithosphere - Zoback - 1983 - Reviews of . . .
Data come from a variety of sources including earthquake focal mechanisms, fault slip data, young volcanic dikes and feeders, in-situ stress measurements at depth, lithospheric flexure models, microstructure paleopiezometry, and consideration of constraints on maximum stress differences from laboratory-determined friction and flow laws
- Stress in the lithosphere: Inferences from steady state flow of rocks . . .
Extrapolations of flow equations to a representative geologic strain rate of 10 -14 sec for halite, marble, quartzite, dolomite, dunite and enstatolite are now warranted because the steady state flow processes in the experiments are identical to those in rocks and because the geotherms are reasonably well established
- State of stress in the lithosphere: Inferences from the flow laws of . . .
Using the material flow law parameters for olivine, stress profiles with depth and strain rate are computed for a representative range of temperature distributions in the lithosphere The results show that the upper 15 to 25 km of the oceanic lithosphere must behave elastically or fail by fracture and that the remainder deforms by exponential
- Flow properties of continental lithosphere - ScienceDirect
The occurrence of mechanically weak zones (σ 1 − σ 3 <10 MPa) at upper-, mid- and lower crustal depths, inferred from geological and geophysical observations and interpretations, is supported by empirically-determined steady-state flow properties of some common crystalline rocks These zones are predicted to occur in the depth intervals 10
- Constraints on yield strength in the oceanic lithosphere derived from . . .
Saturation of moment at large curvature is interpreted in terms of a depth-dependent yield strength for the lithosphere using relations adopted from laboratory experiments of rock deformation A comparison of theoretical curves with observed moments indicates that old oceanic lithosphere has no long-term strength below about 40 km depth, with
- State of stress in the lithosphere: Inferences from the flow laws of . . .
Using the material flow law parameters for olivine, stress profiles with depth and strain rate are computed for a representative range of temperature distributions in the lithosphere The results show that the upper 15 to 25 km of the oceanic lithosphere must behave elastically or fail by fracture and that the remainder deforms by exponential
- Tectonic stresses in the lithosphere: Constraints provided by the . . .
The fragmentary rheological data suggest the following rheological structure of the lithosphere where it is inelastically deforming: A rapid pressure-driven increase in rock strength with depth culminates with a shear strength maximum of up to 8 kbar at depths that depend on the state of stress and on the temperature distribution
|
|
|