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

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

Research output: Contribution to journalArticle

40 Citations (Scopus)

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 - 1994

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plutonism
Eocene
gold
fluid
plate motion
quartz vein
thrust fault
shear zone
terrane
mountain
coast
analysis
trend

ASJC Scopus subject areas

  • Geology

Cite this

Genetic links among fluid cycling, vein formation, regional deformation, and plutonism in the Juneau gold belt, southeastern Alaska. / Miller, L. D.; Goldfarb, R. J.; Gehrels, George E; Snee, L. W.

In: Geology, Vol. 22, No. 3, 1994, p. 203-206.

Research output: Contribution to journalArticle

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