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Plutonism and the origin of metamorphic core complexes

1993; Geological Society of America; Volume: 21; Issue: 7 Linguagem: Inglês

10.1130/0091-7613(1993)021 2.3.co;2

1943-2682

Gordon Lister, Suzanne L. Baldwin,

Geochemistry and Geologic Mapping

Research Article| July 01, 1993 Plutonism and the origin of metamorphic core complexes Gordon S. Lister; Gordon S. Lister 1Victorian Institute of Earth and Planetary Sciences, Department of Earth Sciences, Monash University, Melbourne, Victoria 3168, Australia Search for other works by this author on: GSW Google Scholar Suzanne L. Baldwin Suzanne L. Baldwin 1Victorian Institute of Earth and Planetary Sciences, Department of Earth Sciences, Monash University, Melbourne, Victoria 3168, Australia Search for other works by this author on: GSW Google Scholar Geology (1993) 21 (7): 607–610. https://doi.org/10.1130/0091-7613(1993)021 2.3.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 Gordon S. Lister, Suzanne L. Baldwin; Plutonism and the origin of metamorphic core complexes. Geology 1993;; 21 (7): 607–610. doi: https://doi.org/10.1130/0091-7613(1993)021 2.3.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 The formation of metamorphic core complexes may be triggered by plutonic activity during episodes of continental extension. Pulses of ductile deformation have taken place during short-lived thermal events initiated by the heat input from intruded plutons, sills, or dikes. Such intrusions may be the underlying cause for differential uplift of the footwall during tectonic denudation of metamorphic core complexes. Fast cooling inferred from 40Ar/39Ar apparent ages may have taken place after periods of magma arrival, and need not be the result of rapid erosional or tectonic denudation. Heterogeneity of 40Ar/39Ar apparent ages can be explained by rapid cooling of deforming mylonites formed at shallow crustal levels in the thermal aureoles of intruded sills (or sill swarms). Under such circumstances, apparently isothermal decompression paths may actually link pressure-temperature points set during periods of transient mineral growth during and after periods of igneous activity. 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.