Genetic links among fluid cycling, vein formation, regional deformation, and plutonism in the Juneau gold belt, southeastern Alaska

Research Article| March 01, 1994 Genetic links among fluid cycling, vein formation, regional deformation, and plutonism in the Juneau gold belt, southeastern Alaska Lance D. Miller; Lance D. Miller 1Department of Geosciences, University of Arizona, Tucson, Arizona 85721 Search for other works by this author on: GSW Google Scholar Richard J. Goldfarb; Richard J. Goldfarb 2U.S. Geological Survey, Box 25046, MS 973, Federal Center, Denver, Colorado 80225 Search for other works by this author on: GSW Google Scholar George E. Gehrels; George E. Gehrels 1Department of Geosciences, University of Arizona, Tucson, Arizona 85721 Search for other works by this author on: GSW Google Scholar Lawrence W. Snee Lawrence W. Snee 3U.S. Geological Survey, Box 25046, MS 963, Federal Center, Denver, Colorado 80225 Search for other works by this author on: GSW Google Scholar Author and Article Information Lance D. Miller 1Department of Geosciences, University of Arizona, Tucson, Arizona 85721 Richard J. Goldfarb 2U.S. Geological Survey, Box 25046, MS 973, Federal Center, Denver, Colorado 80225 George E. Gehrels 1Department of Geosciences, University of Arizona, Tucson, Arizona 85721 Lawrence W. Snee 3U.S. Geological Survey, Box 25046, MS 963, Federal Center, Denver, Colorado 80225 Publisher: Geological Society of America First Online: 02 Jun 2017 Online ISSN: 1943-2682 Print ISSN: 0091-7613 Geological Society of America Geology (1994) 22 (3): 203–206. https://doi.org/10.1130/0091-7613(1994)022<0203:GLAFCV>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 Email Permissions Search Site Citation Lance D. Miller, Richard J. Goldfarb, George E. Gehrels, Lawrence W. Snee; Genetic links among fluid cycling, vein formation, regional deformation, and plutonism in the Juneau gold belt, southeastern Alaska. Geology 1994;; 22 (3): 203–206. doi: https://doi.org/10.1130/0091-7613(1994)022<0203:GLAFCV>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 Gold-bearing quartz vein systems in the Juneau gold belt formed within a 160-km- long by 5- to 8-km-wide zone along the western margin of the Coast Mountains, Alaska. Vein systems are spatially associated with shear zones adjacent to terrane-bounding, mid-Cretaceous thrust faults. Analysis of vein orientations and sense of shear data define a stress configuration with greatest and least principal axes oriented subhorizontally with northeast-southwest trends and subverticaly, respectively. This local stress configuration is compatible with the far-field plate configuration during Eocene time. Isotopic ages of vein formation indicate that fluid cycling occurred between 56.5 and ≥52.8 Ma, and are consistent with a genetic link between veining and a change in plate motion in early Eocene time. Veining was also synchronous with the latter stages of rapid exhumation and voluminous plutonism immediately inboard of the gold belt. We propose a model in which interacting tectonic events facilitated fault-valve action and vein development along now-exhumed shear zones. 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.