Zobrazeno 1 - 10
of 17
pro vyhledávání: '"David L Olgaard"'
Publikováno v:
Journal of Structural Geology. 27:265-281
In this study, we aimed to (i) answer the question if water affects the strength of marble deforming at high temperature and (ii) establish criteria that allow assessment of the role of water in microstructure development in marble. Samples of Carrar
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::4c5020b1893be7516e4089ea704e00d2
https://doi.org/10.1016/j.jsg.2004.10.002
https://doi.org/10.1016/j.jsg.2004.10.002
Publikováno v:
Earth and Planetary Science Letters. 215:13-26
Fluid pressure interpreted from uniaxial consolidation tests equals 80% of the overburden (total) stress in Pleistocene mudstones at Ocean Drilling Program (ODP) Site 1073 of the US mid-Atlantic continental slope, offshore New Jersey. The fluid overp
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::44b24803de080e13096377be76c03b94
https://doi.org/10.1016/s0012-821x(03)00425-4
https://doi.org/10.1016/s0012-821x(03)00425-4
Publikováno v:
Journal of Structural Geology. 23:1393-1413
This study investigated the rheological and microstructural evolution of Carrara marble deformed to large shear strain to understand how dynamic recrystallization and lattice-preferred orientation (LPO) are related to strain softening processes. Soli
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::b9478cb1fcb807191ad94feacb2a0153
https://doi.org/10.1016/s0191-8141(01)00006-2
https://doi.org/10.1016/s0191-8141(01)00006-2
Autor:
Jean-Pierre Burg, I. C. Stretton, Karsten Kunze, Luigi Burlini, David L Olgaard, Hans-Rudolf Wenk, Marco Pieri
Publikováno v:
Tectonophysics. 330:119-140
Torsion deformation experiments were performed on solid cylinders of Carrara marble at high temperature (1000 K) and constant twist rate (about 4×10 −4 rad s −1 ) to large twist angles (between 80° and 840°). These conditions correspond to sim
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::c00c430964069e3b1d4f0c7d4182ce37
https://doi.org/10.1016/s0040-1951(00)00225-0
https://doi.org/10.1016/s0040-1951(00)00225-0
Publikováno v:
Geophysical Research Letters. 25:1245-1248
To investigate the effect of variations in volume fraction of a second phase on the strength and microstructure of rocks, we produced synthetic marbles with a grainsize of 5-25 μm, containing quartz of similar size, with volume fractions of 0, 5.1,
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::331dab020cf9f22acb56bfac0cf715a8
https://doi.org/10.1029/98gl00730
https://doi.org/10.1029/98gl00730
Publikováno v:
Journal of Structural Geology. 20:255-267
Solnhofen limestone was deformed in torsion to shear strains (γ) ranging from 1 to 12, at a temperature of 750 °C, 300 MPa confining pressure and a maximum strain-rate of 10−3 s−1. These deformation conditions correspond to the intracrystalline
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::19ed78f21d711afb02b5d6ca8b361d66
https://doi.org/10.1016/s0191-8141(97)00058-8
https://doi.org/10.1016/s0191-8141(97)00058-8
Publikováno v:
Journal of Geophysical Research: Solid Earth. 102:825-839
The generation and maintenance of excess pore pressures in dehydrating gypsum aggregates were investigated using experiments and microstructural analyses. A triaxial deformation apparatus, was equipped with a pore fluid system connected directly to t
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::335785d931190178f4b76a6211767e33
https://doi.org/10.1029/96jb02485
https://doi.org/10.1029/96jb02485
Publikováno v:
Journal of Geophysical Research: Solid Earth. 102:841-852
Fluid is released by dehydration reactions during prograde metamorphism. If the dilation of the pore space is insufficient to provide storage for all the released fluid, then pore pressure excess is generated. Whether the excess can be maintained ove
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::bcbdc22c7cc73a278c8d2843a3826359
https://doi.org/10.1029/96jb02484
https://doi.org/10.1029/96jb02484
Publikováno v:
Geophysical Research Letters. 23:197-200
The migration, coalescence and localization of slip, seismicity, and zones of high pore pressure are modeled using a porosity reduction mechanism to drive pore pressure within a fault zone in excess of hydrostatic. Increased pore pressure in discrete
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::53da0750a3e8bca8e7d801af3eecbfc2
https://doi.org/10.1029/95gl03178
https://doi.org/10.1029/95gl03178
Autor:
Lisa N. Dell'Angelo, David L. Olgaard
Publikováno v:
Journal of Geophysical Research: Solid Earth. 100:15425-15440
Deformation experiments on two fine-grained anhydrite aggregates have revealed two high-temperature flow regimes: (1) twinning and dislocation creep at high stresses (σ), and (2) diffusion creep accompanied by grain boundary sliding at low stresses.
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::a8a86ebab864ce9ff181d9ac976acb94
https://doi.org/10.1029/95jb00956
https://doi.org/10.1029/95jb00956