Anticrack model for pressure solution surfaces 论文

摘要

Research Article| September 01, 1981 Anticrack model for pressure solution surfaces Raymond C. Fletcher; Raymond C. Fletcher 1U.S. Geological Survey, 345 Middlefield Road, Menlo Park, California 94025 Search for other works by this author on: GSW Google Scholar David D. Pollard David D. Pollard 1U.S. Geological Survey, 345 Middlefield Road, Menlo Park, California 94025 Search for other works by this author on: GSW Google Scholar Geology (1981) 9 (9): 419–424. https://doi.org/10.1130/0091-7613(1981)9<419:AMFPSS>2.0.CO;2 Article history first online: 02 Jun 2017 Cite View This Citation Add to Citation Manager Share Icon Share Facebook Twitter LinkedIn MailTo Tools Icon Tools Get Permissions Search Site Citation Raymond C. Fletcher, David D. Pollard; Anticrack model for pressure solution surfaces. Geology 1981;; 9 (9): 419–424. doi: https://doi.org/10.1130/0091-7613(1981)9<419:AMFPSS>2.0.CO;2 Download citation file: Ris (Zotero) Refmanager EasyBib Bookends Mendeley Papers EndNote RefWorks BibTex toolbar search Search Dropdown Menu toolbar search search input Search input auto suggest filter your search All ContentBy SocietyGeology Search Advanced Search Abstract We propose that discrete solution surfaces originate at stress concentrations and propagate through rock as anticracks. As material is dissolved and removed, the anticrack walls move toward each other; stress and displacement fields are identical to those for the conventional opening crack, but with a change of sign. Observations of entire traces of solution surfaces are consistent with the anticrack concept: (1) the surfaces are bounded in extent; (2) the dissolved thickness varies from a maximum near the center to zero at the tips; and (3) the maximum dissolved thickness is proportional to the length of the surface. Local dissolution and in-plane propagation are suggested by the large isotropic compressive stress at the anticrack tip. Propagating solution surfaces will interact to form a regular array corresponding to some bulk strain rate. Anticracks may also interact with opening and shear cracks; observations of interacting solution surfaces, veins, and faults illustrate these configurations. Intersecting arrays of cracks, anticracks, and shear cracks operate to yield a mode of bulk deformation similar to diffusion-accommodated grain-boundary sliding in polycrystalline solids. First Page Preview Close Modal You do not have access to this content, please speak to your institutional administrator if you feel you should have access.