Melt-enhanced deformation: A major tectonic process

Research Article| July 01, 1986 Melt-enhanced deformation: A major tectonic process Lincoln S. Hollister; Lincoln S. Hollister 1Department of Geological and Geophysical Sciences, Princeton University, Princeton, New Jersey 08544 Search for other works by this author on: GSW Google Scholar Maria Luisa Crawford Maria Luisa Crawford 2Department of Geology, Bryn Mawr College, Bryn Mawr, Pennsylvania 19010 Search for other works by this author on: GSW Google Scholar Author and Article Information Lincoln S. Hollister 1Department of Geological and Geophysical Sciences, Princeton University, Princeton, New Jersey 08544 Maria Luisa Crawford 2Department of Geology, Bryn Mawr College, Bryn Mawr, Pennsylvania 19010 Publisher: Geological Society of America First Online: 01 Jun 2017 Online ISSN: 1943-2682 Print ISSN: 0091-7613 Geological Society of America Geology (1986) 14 (7): 558–561. https://doi.org/10.1130/0091-7613(1986)14<558:MDAMTP>2.0.CO;2 Article history First Online: 01 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 Lincoln S. Hollister, Maria Luisa Crawford; Melt-enhanced deformation: A major tectonic process. Geology 1986;; 14 (7): 558–561. doi: https://doi.org/10.1130/0091-7613(1986)14<558:MDAMTP>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 Convergent tectonics between continental crustal blocks result in deep burial and anatexis of supracrustal rocks. Anatectic and/or mantle-derived melts combine to form a melt-weakened zone in the thickened lower crust. The accumulation of melt eventually leads to crustal failure along melt-lubricated shear zones. Rapid (>1 mm/yr vertical component) movements of large crustal blocks result. We refer to these crustal displacements as tectonic surges. The melt-lubricated shears are characterized by the close association of sheared country rocks with foliated or massive igneous sills and plutons. Rocks that formed at different crustal levels are juxtaposed across these shear zones. One result of surges with large lateral component of movement is metamorphic inversion with high-pressure and high-temperature metamorphic rocks structurally over lower pressure and temperature assemblages. Large and rapid vertical surges may displace crust containing abundant melt and may result in high T/P (including granulite facies) metamorphism and preservation of metamorphic textures caused by rapid decompression. This content is PDF only. Please click on the PDF icon to access. 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.