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Radiation-damage halos in quartz

1988; Geological Society of America; Volume: 16; Issue: 6 Linguagem: Inglês

10.1130/0091-7613(1988)016 2.3.co;2

1943-2682

Michael R. Owen,

earthquake and tectonic studies

Research Article| June 01, 1988 Radiation-damage halos in quartz Michael R. Owen Michael R. Owen 1Department of Geology, St. Lawrence University, Canton, New York 13617 Search for other works by this author on: GSW Google Scholar Author and Article Information Michael R. Owen 1Department of Geology, St. Lawrence University, Canton, New York 13617 Publisher: Geological Society of America First Online: 02 Jun 2017 Online ISSN: 1943-2682 Print ISSN: 0091-7613 Geological Society of America Geology (1988) 16 (6): 529–532. https://doi.org/10.1130/0091-7613(1988)016 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 Michael R. Owen; Radiation-damage halos in quartz. Geology 1988;; 16 (6): 529–532. doi: https://doi.org/10.1130/0091-7613(1988)016 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 Radiation-damage halos are present in quartz that surrounds, or is adjacent to, accessory minerals such as zircon. These halos are not visible in transmitted light but are revealed by cathodoluminescence (CL). They extend up to 45 μm away from the source of radioactivity. Some halos show concentric rings similar to those previously reported in pleochroic halos in biotite. Radiation-damage halos occur in three main settings: surrounding inclusions within quartz grains; penetrating into quartz from adjacent radionuclide-bearing grains; and in quartz cement near such grains. Halos are more common in pre-Paleozoic rocks than in younger rocks, except in cases of unusual enrichment in radioactive elements. Halos result from damage to quartz-crystal structure, identical to the process forming pleochroic halos in biotite. Damage is caused by alpha particles emitted by radioactive elements within mineral grains and is a partial function of time. Consequently, radiation-damage halos may have potential uses in geochronology. 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.