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

L. D. Miller, R. J. Goldfarb, G. E. Gehrels, L. W. Snee

Research output: Contribution to journalArticle

42 Scopus citations

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-Cretaaceous 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 subvertically, 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 occured 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. -from Authors

Original languageEnglish (US)
Pages (from-to)203-206
Number of pages4
JournalGeology
Volume22
Issue number3
DOIs
StatePublished - Jan 1 1994

ASJC Scopus subject areas

  • Geology

Fingerprint Dive into the research topics of 'Genetic links among fluid cycling, vein formation, regional deformation, and plutonism in the Juneau gold belt, southeastern Alaska'. Together they form a unique fingerprint.

Cite this